HANDBOOK LOSSNAY LGH-15RVX-E LGH-25RVX-E LGH-35RVX-E LGH-50RVX-E LGH-65RVX-E LGH-80RVX-E LGH-100RVX-E LGH-150RVX-E LGH-200RVX-E PZ-61DR-E PZ-80RF8-E

Transcription

1 March 015 No. U04 LOSSNAY HANDBOOK MODELS LGH-15RVX-E LGH-5RVX-E LGH-35RVX-E LGH-50RVX-E LGH-65RVX-E LGH-80RVX-E LGH-100RVX-E Nameplate Nameplate LGH-150RVX-E LGH-00RVX-E Remote controller (Parts number is not set) PZ-61DR-E Filter (Parts number is not set) PZ-15RF8-E PZ-35RF8-E PZ-65RF8-E PZ-100RF8-E PZ-5RF8-E PZ-50RF8-E PZ-80RF8-E Warnin: Repair work must be performed by the manufacturer, its service aent or a similarly qualified person in order to avoid hazards.

2 Contents 1. Safety precautions Specifications Outside dimensions Electrical wirin diarams Circuit board diarams Troubleshootin Overhaulin procedures Parts catalo LGH-15RVX-E LGH-5RVX-E LGH-35RVX-E LGH-50RVX-E LGH-65RVX-E LGH-80RVX-E LGH-100RVX-E LGH-150RVX-E LGH-00RVX-E

3 1. Safety precautions Read the followin precautions thorouhly before the maintenance, and then inspect and repair the product in a safe manner. The types and levels of daner that may arise if the product is handled incorrectly are described with the warnin symbols shown below. Warnin Electric shock If you must inspect the circuitry while the power is on, do not touch the live parts. Incorrect handlin of the product may result in serious injury or death. Turn off the power supply Be sure to shut off the power supply isolator before disassemblin the unit for repair. (Failure to heed this warnin may result in electric shock.) Caution aainst electric shock (Failure to heed this warnin may result in electric shock.) Be sure to follow this instruction. Modification is prohibited Do not modify the unit. (Failure to heed this warnin may result in electric shock, fire and/or injury.) Prohibited Use proper parts and tools For repair, be sure to use the parts listed in the service parts list of the applicable model and use the proper tools. (Failure to heed this warnin may result in electric shock, fire and/or injury.) Be sure to follow this instruction. Proper electric work Use the electric wires desinated for electric work, and conduct electric work in accordance with your local "Electric Installation Enineerin Standard", the "Indoor Wirin Reulations" and the installation instructions. (Improper connection or wirin installation may result in electric shock and/or fire.) Be sure to follow this instruction. Replace damaed and/or deraded parts Be sure to replace the power cord and lead wires if they are damaed and/or deraded. (Failure to heed this warnin may result in electric shock and/or fire.) Be sure to follow this instruction. Check insulation Upon completin repair work, always measure the insulation resistance. Verify that it is at least 10 MΩ (with a 500-V DC insulation resistance tester), and then turn on the power. (Inadequate insulation may result in electric shock.) Be sure to follow this instruction. Caution Incorrect handlin of the product may result in injury or damae to properties includin buildins and equipment. Caution for injury Do not work at a location where you do not have a sure footin. (Failure to heed this caution may result in a fall.) Prohibited Wear loves Wear loves when servicin. (Failure to heed this caution may result in injury to your hands from sharp metal or other edes.) Be sure to follow this instruction. Request for repair Inspect the earth condition, and repair it if it is incomplete. Make sure that a power supply isolator or an overload protection device is installed, if it is not installed, recommend the dealer to install one. Make sure that the product operates properly upon completion of repair. Clean the product and the surroundin area, and then notify the customer of the completion of repair. 3

4 . Specifications Model name LGH-15RVX-E to LGH-00RVX-E Heat exchane system Heat recovery ventilatin system Heat exchaner material Special treated paper plate heat exchaner Claddin Galvanized steel sheet Heat insulation material Self-extinuishin urethane foam Motor EC motor Filter Non-woven fabrics filter (Gravitational method 8% EU-G3) Surroundin air condition Shall be between -10 C and 40 C, 80%RH or less Suction air condition Shall be lower than 40 C, 80%RH Supply fan operation under low outdoor temperature -10 C to -15 C: Intermittent operation 60 min ON, 10 min OFF -15 C or less: Intermittent operation 55 min OFF, 5 min ON Function Heat recovery mode/bypass mode, Fan speed 1,, 3, 4 Electrical power supply 0-40 V/50 Hz, 0 V/60 Hz Insulation resistance 10 MΩ or more Dielectric strenth 1500 V AC 1 minute Model name Runnin current (A) Input power (W) Air volume External static Exchane efficiency (%) pressure Enthalpy (m 3 /h) (L/S) Temperature (Pa) Heatin Coolin Noise (db) Dia. of the centrifual fan (mm) LGH-15RVX-E LGH-5RVX-E LGH-35RVX-E LGH-50RVX-E LGH-65RVX-E LGH-80RVX-E LGH-100RVX-E LGH-150RVX-E LGH-00RVX-E Weiht (k) * The above values apply durin Heat recovery mode ventilation when the fan speed is set to Fan speed 4 at the ratin pressure loss and 30 V / 50 Hz. *For the specifications at the other fan speeds, see the spec. sheets. * The values iven in the table for the noise level reflect the levels measured at a position 1.5 meters immediately below the unit in an anechoic chamber. * Noise chane or increase may occur because of the Bypass-Automatic function or Automatic fan speed chane by timer settin and/or other functions. *Temperature exchane efficiency (%) are based on winter condition. * Mitsubishi Electric measures products accordin to Japan Industrial Standard (JIS B 868), therefore Q-H curves are measured by chamber method. * On-site commissionin measurements by pitot tube method could be as much 0% different from JIS test room conditions. If the measurin point is close to sources of turbulence like bends, contractions and dampers etc, it is difficult to measure air volume correctly. A straiht duct lenth more than 10D (D=duct diameter) from the source of turbulence is recommended for correct measurement. On-site measurement should therefore be measured in accordance with BSRIA uideline (Commissionin Air System. Application procedures for buildins AG3/89.3(001)) Model name Power supply requirement Power consumption Transmission cable Total wirin lenth Number of controllable Lossnay units Environmental condition Size Weiht Color PZ-61DR-E 1 V DC (Supplied from Lossnay unit) 0.3 W Non polarized -wire (0.3 mm (AWG) sheathed cable) 00 m maximum 15 Lossnay units maximum (Max. remote controllers installable) Temperature: 0 to 40 C, Humidity: 30% to 90% relative humidity (no condensation) 10 x 10 x 19 mm 0.5 k Munsell 1.0Y9./0. 4

5 3. Outside dimensions LGH-15RVX-E, LGH-5RVX-E, LGH-35RVX-E, LGH-50RVX-E, LGH-65RVX-E, LGH-80RVX-E, LGH-100RVX-E Position where duct direction chane is possible M Bypass damper plate Air exhaust fan D Ceilin suspension fixture (4-13 X 0 oval) F EA (exhaust air outlet) B K L E F C J A Hih-efficiency filter (sold separately) attachment position J N RA (return air) OA (outside air intake) SA (supply air) 115 M 0 N ø G ø H Lossnay core Air filter Hih-efficiency filter Fan Maintenance space More than to 50 Inspection openin 450 x 450 or more Air supply fan Control box Maintenance cover Power supply cable openin Lossnay core Position where duct direction chane is possible Air filters Model Ceilin suspension Nominal Duct connectin Dimensions Duct pitch Weiht fixture pitch diameter G H J K L M N flane (k) A B C D E F LGH-15RVX-E LGH-5RVX-E LGH-35RVX-E LGH-50RVX-E LGH-65RVX-E LGH-80RVX-E LGH-100RVX-E Unit (mm) 5

6 LGH-150RVX-E, LGH-00RVX-E Air exhaust fan Bypass damper plate 1010 Ceilin suspension fixture (4-15 x 30 oval) EA (exhaust air outlet) 70 RA (return air) A B C D OA (outside air intake) 70 SA (supply air) 115 Lossnay core Air filter Hih-efficiency filter Fan Maintenance space More than ø4 ø58 ø4 ø to 50 Inspection openin 450 x 450 or more Air supply fan Control box Maintenance cover Power supply cable openin Lossnay cores Hih-efficiency filter (sold separately) attachment position Air filters Model A B C D Weiht (k) LGH-150RVX-E LGH-00RVX-E Unit (mm) 6

7 PZ-61DR-E PZ-15RF8-E, PZ-5RF8-E, PZ-35RF8-E, PZ-50RF8-E, PZ-65RF8-E, PZ-80RF8-E, PZ-100RF8-E Unit (mm) Model Dimension The number of filters per set A B C Supply Exhaust PZ-15RF8-E LGH-15RVX-E PZ-5RF8-E LGH-5RVX-E PZ-35RF8-E LGH-35RVX-E PZ-50RF8-E LGH-50RVX-E PZ-65RF8-E LGH-65RVX-E Applicable model PZ-80RF8-E LGH-80RVX-E, LGH-150RVX-E (Two sets) PZ-100RF8-E LGH-100RVX-E, LGH-00RVX-E (Two sets) Notes: Each Lossnay unit is provided with one set of the fi lters. (Two sets for LGH-150RVX-E and LGH-00RVX-E) PZ-15RF8-E and PZ-35RF8-E has the front and back side. Attach the filter so that the "Front" (printed) side faces the outside. Unit (mm) 7

8 4. Electrical wirin diarams LGH-15RVX-E, LGH-5RVX-E, LGH-35RVX-E, LGH-50RVX-E, LGH-65RVX-E, LGH-80RVX-E, LGH-100RVX-E * TM1, TM, TM3, TM4, TB5 shown in dotted lines are field work. * Be sure to connect the earth wire. * A power supply isolator must be installed. * Always use an isolator for the main power connection. Bypass monitor or Pre-heater sinal output (*1) Upper printed circuit board (Control circuit board) (*1) Max. 40 V AC 1 A Min. 0 V AC 100 ma 4 V DC 1 A 5 V DC 100 ma M 1 EXHAUST FAN MOTOR M SUPPLY FAN MOTOR REACTOR CN9 CN10 CN119 TAB3,4 LED6 Lower printed circuit board (Power circuit board) Volt-free contact Malfunction monitor output (*1) Operation monitor output (*1) PZ- 61DR-E COM nd remote controller (Max. controllers) nd Lossnay unit (Max. 15 units) M-NETtransmission cable Shielded Wire 1 V or 4 V DC Mr.Slim (non-polar) A B S 1 3 TM3 X15 X14 X13 CN17(RE) TM4 LED3 TB5 TM SW6 SA1SA CN0(GR) CN6(WH) CN3(WH) LED4 LED LED1 SW SW5 CN118 CN19 CN18 GM CN7 TAB5 TABTAB1 CN5 CN LINE FILTER TH (RA) L N PE TM1 TH1 (OA) Isolator (Field supply) L N POWER SUPPLY 0-40 V/50 Hz 0 V/60 Hz Definition of symbols M1: Motor for exhaust fan M: Motor for supply fan GM: Motor for Bypass damper TH1: Thermistor for outside air TH: Thermistor for return air SW, 5: Switch (Function selection) SW6: Switch (Model selection) TM1: Terminal block (Power supply) TM: Terminal block (External control input) TM3: Terminal block (Monitor output) TAB1, TAB, (TAB5): Connector (Power supply) TAB3, TAB4: Connector (Reactor) X13: Relay contact X14: Relay contact X15: Relay contact CN5: Connector (Thermistor RA) CN7: Connector (Motor for Bypass damper) CN9: Connector (Fan motor) CN10: Connector (Fan motor) CN17: Connector (Fan speed 1//3/4) CN19: Connector CN119: Connector CN0: Unused CN: Connector (Thermistor OA) CN6: Connector (Bypass, 0-10 V DC Fan speed control) CN3: Connector (Remote control selection) SA1: Address settin rotary switch (tens diit) SA: Address settin rotary switch (ones diit) LED1 to LED3: Inspection indicator lamp LED4, LED6: Power supply indicator lamp TM4: Terminal block (Transmission cable) TB5: Terminal block (M-NET Transmission cable) CN18: Connector CN118: Connector SYMBOL : Terminal block : Connector on PCB Select proper circuit breaker accordin to the electrical current information in the chart below. Model LGH-15RVX-E LGH-5RVX-E LGH-35RVX-E LGH-50RVX-E LGH-65RVX-E LGH-80RVX-E LGH-100RVX-E Maximum current when operatin [A] Inrush current after 10 ms 6.1 power supply ON [A] 100 ms 3.6 8

9 LGH-150RVX-E, LGH-00RVX-E * TM1, TM, TM3, TM4, TB5 shown in dotted lines are field work. * Be sure to connect the earth wire. * A power supply isolator must be installed. * Always use an isolator for the main power connection. M 1 EXHAUST FAN MOTOR M SUPPLY FAN MOTOR GM CN9 CN10 CN7 REACTOR TAB3,4 LED6 Lower printed circuit board (Power circuit board (upper)) TAB CN11 TAB1 Bypass monitor or Pre-heater sinal output (*1) PZ- 61DR-E M-NETtransmission cable Volt-free contact Malfunction monitor output (*1) Operation monitor output (*1) COM nd remote controller (Max. controllers) nd Lossnay unit (Max. 15 units) Shielded Wire 1 V or 4 V DC Mr.Slim (non-polar) Upper printed circuit board (Control circuit board) (*1) Max. 40 V AC 1 A Min. 0 V AC 100 ma 4 V DC 1 A 5 V DC 100 ma A B S 1 3 TM3 X15 X14 X13 CN17(RE) TM4 LED3 TB5 TM SW6 SA1SA CN0(GR) CN6(WH) CN3(WH) LED4 LED LED1 SW SW5 CN1 REACTOR CN19 CN18 M 1 EXHAUST FAN MOTOR CN9 TAB3,4 LED6 Lower printed circuit board 1 (Power circuit board) CN5 TH (RA) CN TH1 (OA) M SUPPLY FAN MOTOR GM CN10 CN7 TAB5 CN119 CN118 TAB TAB1 LINE FILTER L N PE TM1 Isolator (Field supply) L N POWER SUPPLY 0-40 V / 50 Hz 0 V / 60 Hz M1: Motor for exhaust fan M: Motor for supply fan GM: Motor for Bypass damper TH1: Thermistor for outside air TH: Thermistor for return air SW, 5: Switch (Function selection) SW6: Switch (Model selection) TM1: Terminal block (Power supply) TM: Terminal block (External control input) TM3: Terminal block (Monitor output) TM4: Terminal block (Transmission cable) TB5: Terminal block (M-NET Transmission cable) TAB1, TAB, TAB5: Connector (Power supply) Definition of symbols TAB3, TAB4: Connector (Reactor) X13: Relay contact X14: Relay contact X15: Relay contact CN5: Connector (Thermistor RA) CN7: Connector (Motor for Bypass damper) CN9: Connector (Fan motor) CN10: Connector (Fan motor) CN17: Connector (Fan speed 1//3/4) CN18: Connector CN118: Connector CN19: Connector CN119: Connector CN0: Unused CN1: Connector CN11: Connector CN: Connector (Thermistor OA) CN6: Connector (Bypass, 0-10 V DC Fan speed control) CN3: Connector (Remote control selection) SA1: Address settin rotary switch (tens diit) SA: Address settin rotary switch (ones diit) LED1 to LED3: Inspection indicator lamp LED4, LED6: Power supply indicator lamp SYMBOL : Terminal block : Connector on PCB Select proper circuit breaker accordin to the electrical current information in the chart below. Model LGH-150RVX-E LGH-00RVX-E Maximum current when operatin [A] Inrush current after 10 ms 1. power supply ON [A] 100 ms 7. 9

10 5. Circuit board diarams Circuit board diaram and check points (1) Control circuit board Malfunction monitor output (Between 8 and 0) Error: 0 Normal: Operation monitor output (Between 9 and 0) When Lossnay is operatin: 0 When Lossnay is stopped: Bypass monitor output Pre-heater output (Between 7 and 0) Durin bypass mode or when the pre-heater is operatin: 0 Durin heat recovery mode or when the pre-heater is stopped: Remote controller power supply indicator (LED3 Green) Fed with power: lit Not fed with power: unlit Lot number indication Monitor output COM Remote controller (PZ-61DR-E, etc.) 10 to 13 V DC M-NET transmission cable (Power supply unit, etc.) M-NET transmission cable (Shielded) External control input Power circuit board (upper) Only for LGH-150RVX-E and LGH-00RVX-E Indication of the microcomputer software version SW Power circuit board 1 to 14 V DC (Insulated) 5 V DC (Insulated) Power for the circuit GND (Insulated) Return air (RA) thermistor Outdoor air (OA) thermistor 10s diit 1s diit Power supply indicator for the circuit (LED4 Red) Fed with power: lit Not fed with power: unlit SA1 SA SW6 Address settin switch Model selection switch SW5 Function selection switch Error indicator (LED1 Green) Normal: unlit Error: blinkin Durin delay operation: lit M-NET indicator (LED Red) Reistered: unlit Not reistered: lit M-NET communication error: blinkin 10

11 () Power circuit board Caution: The power circuit board is not insulated from the power line (hih voltae part), except for the connection part (CN118,CN119, and CN11) with the control circuit board. Also, even when the power supply is cut off, the capacitor is chared. Therefore, wait for at least five minutes before startin work. Exhaust fan motor (CN9) Pin No. of the connector 1Power for the motor: 80 to 360 V DC Not used 3Not used 4GND 5Power for motor control: 14 to 16 V DC 6Speed command voltae: 0 to 6 V DC 7Rotational speed pulse 14 to 16 V DC (Not insulated) Power supply indicator for motor control (LED6 Red) Fed with power: lit Not fed with power: unlit Supply fan motor (CN10) Pin No. of the connector 1Power for the motor: 80 to 360 V DC Not used 3GND 4Power for motor control: 14 to 16 V DC 5Speed command voltae: 0 to 6 V DC 6Rotational speed pulse Reactor Lot number indication GND (Not insulated) Control circuit board Only for LGH-150RVX-E and LGH-00RVX-E Control circuit board* 1 to 14 V DC (Insulated)* GND (Insulated)* Damper motor output 0 to 40 V/50 Hz 0 V/60 Hz Power supply input 0 to 40 V/50 Hz 0 V/60 Hz Fuse 10 A/50 V Fuse 5 A/50 V Note: The components marked with * are not placed on the power circuit board (upper) of LGH-150RVX-E and LGH-00RVX-E. 11

12 6. Troubleshootin Work precautions When removin or touchin the cables, circuit board or other parts, make sure to turn off the power supply isolator. Even after the power supply isolator is turned off, the capacitor on the circuit board retains hih voltae for a while. Therefore, before servicin, wait for at least five minutes, and then use a tester to check that the voltae has dropped. Once the power supply is turned off, be sure to wait for at least five minutes before turnin the power back on aain. When servicin, be sure to recreate the malfunction two or three times before startin repairs. When servicin, always take care to keep proper footin. Before startin the service, always turn off the power supply isolator. Sufficient care must be taken to avoid electric shock or injury. Make sure to connect the power supply wires correctly. When removin the circuit board, always hold it at both ends and remove carefully so as not to apply force to the surface mounted parts. When removin the circuit board, be careful of the metal edes on the board. When removin or insertin the connectors for the circuit board, hold the entire housin section. Never pull on the lead wires. If it is thouht that there is a circuit board malfunction, check for disconnected wires in the print pattern, burnt parts or discoloration. If the circuit board is replaced, make sure that the switch settins on the new board are the same as the old board. 6-1 Service flowchart After checkin the check items below, follow the troubleshootin for servicin. Applicable Device Lossnay Enery Recovery Ventilator Lossnay Remote Controller Applicable Model LGH-15RVX-E, LGH-5RVX-E, LGH-35RVX-E LGH-50RVX-E, LGH-65RVX-E, LGH-80RVX-E LGH-100RVX-E, LGH-150RVX-E, LGH-00RVX-E PZ-61DR-E, PZ-43SMF-E No. Preliminary check item Details 1 Product information Model name of the product Serial number of the product, manufacturin lot number of the circuit board Microcomputer software version marked on the circuit board Fault status Fault status (For example, the fan does not operate.) Error code display on the remote controller Operation settin of the remote controller (ventilation mode settin, fan speed settin, etc.) 3 Frequency of fault occurrence Frequency of fault occurrence (frequency of date and time of occurrence, reularity of occurrence, etc.) Operatin time up to fault occurrence Date of start of use, date of fault occurrence 4 Timin of fault occurrence Remote controller operation performed before fault occurrence Operatin status, etc. 5 System settins Function selection switch settins and address settin of the product Model name and address settin of the Lossnay remote controller or system controller, etc. Function settins on PZ-61DR-E when PZ-61DR-E is used 6 System drawins System Confiuration Wirin Record of the Lossnay function settin statuses 1

13 Lossnay does not work after installation is completed. (1) Failure mode 1: Lossnay does not work. Lossnay does not work in trial operation after installation is completed, or Lossnay stops workin durin use. The remote controller does not work after installation is completed. () Failure mode : The remote controller does not work. Operations such as ON/OFF, fan speed or ventilation mode switchin are not possible on the remote controller after installation is completed. (3) Failure mode 3: Operations on the remote controller are not possible. Lossnay does not work properly after installation is completed. (4) Failure mode 4: Lossnay does not work properly. An error code is displayed on the remote controller. LEDs on the circuit board blink or liht. (5) Failure mode 5: Error code and LED display 6- Check Details (1) Failure mode 1: Lossnay does not work. Initial Check Items Check the followin details if Lossnay does not work after installation is completed. 1 Power supply No. Check Item Corrective action 1 Is the main power supply on? Turn the main power supply on. Is the current capacity of the power supply isolator Use an appropriate power supply isolator. appropriate? 3 Is the desinated cable used for the power supply cable? Use the desinated cable. 4 Is the specified power supply supplied to the power Supply the desinated power supply. supply terminal (TM1)? 0-40 V/50 Hz, 0 V/60 Hz 5 Is the power supply cable incorrectly wired, is there Connect the cable securely and correctly, and a faulty connection or are screws loose? tihten the screws firmly. 6 Is there a faulty connection on the power supply terminals (TM1, TAB1, TAB, and TAB5)? Connect the lead wires securely. 7 Is there a faulty connection on the reactor terminals Connect the lead wires securely. (TAB3 and TAB4)? For LGH-150RVX-E and LGH-00RVX-E, check both the power circuit board and power circuit board (upper). 8 Are the power supply indicator lamps (LED4 and LED6, red) lit? For LGH-150RVX-E and LGH-00RVX-E, check both the power circuit board and power circuit board (upper). Check the above items. 13

14 Transmission cables (remote controller transmission cable, M-NET transmission cable, and external input/ output sinal cable) No. Check Item Corrective action 1 Are the desinated cables used for the remote controller Use the desinated transmission cables. transmission cable and M-NET transmission cable? (See Table -1 and Table -.) Are the desinated cables used for the external input/ Use the desinated cables. output sinal cable? (See Table -3.) 3 Are the transmission cables wired usin multicore cables? Use the desinated transmission cables. 4 Are multiple transmission cables wired in the same pipin duct? 5 Is the power supply cable wired at least 5 cm away from transmission cables? 6 Are the transmission cables connected to the desinated terminal block? (See Table -1 and Table -.) 7 Are the transmission cables incorrectly wired, is there a faulty connection or are screws loose? 8 Is the wirin lenth of the transmission cable within the reulations? (See Table -1 and Table -.) 9 Does the external input sinal match the specifications? (See Table -3.) 10 Is the external input sinal input to the Lossnay set as the main Lossnay? 11 Is the function selection for the external output sinal set correctly? Wire the transmission cable away from one another. Wire the power supply cable at least 5 cm away from the transmission cables. Connect the transmission cables to the desinated terminal blocks. Connect the cable securely and correctly, and tihten the screws firmly. Wire the cables within the reulations. Input the sinal that matches the specifications. Input the sinal to the Lossnay set as the main Lossnay (SW5-10 ON). Set the function selection switches (SW-8, 5-, and 5-6) on the circuit board correctly. Set the function settins (No. 57 and 58) of PZ- 61DR-E correctly. Table -1 M-NET transmission cable specifications Cable M-NET transmission cable Type Shielded cable CVVS, CPEVS Number of cores -core cable Cable diameter 1.5 mm to.0 mm Max. extension 00 m (Note 1) Total extension 500 m (Note ) Terminal block TB5 [A] [B] Table - Remote controller transmission cable specifications Cable PZ-61DR-E or PZ-43SMF-E transmission cable Type Sheathed cable Number of cores -core cable Cable diameter 0. 3 mm (AWG) Total extension 00 m Terminal block TM4 1 (Note 1) Distance from the power supply unit to the furthest unit or system controller (Note ) Overall lenth of the cable between the units and the system controllers 14

15 Table -3 External input/output specifications Function Name External control input (volt-free contact) External control input (1 V DC, 4 V DC) Terminal or connector on the circuit board TM 13 TM 1 Sinal specifications Level/pulse (Note 1) Level/pulse (Note 1) Mr. Slim indoor unit control sinal TM 1 Serial sinal Remote/local switchin Remote ON/OFF input CN3 13 CN3 1 Level (Note 1) Fan speed 4 input (volt-free contact) CN17 1 Fan speed 3 input (volt-free contact) CN17 13 Fan speed input (volt-free contact) CN17 14 Level Fan speed 1 input (volt-free contact) CN17 15 (Note 1) Bypass mode input (volt-free contact) CN6 1 Fan speed switchin input (0 to 10 V DC) CN6 45 Analo Materials Used Total extension Sinle-lead 0.8 to 1. mm dia. or 500 m twisted lead 0.5 to 1.5 mm Sinle-lead 0.8 to 1. mm dia. or (Note ) twisted lead 0.5 to 1.5 mm Slim-Lossnay connection cable 500 m (Accessory parts) Remote ON/OFF adaptor (PAC-SE55RA-E) Remote display adaptor (PAC-SA88HA-E) <Caution> Input the sinals to the Lossnay (SW5-10 ON, with the smallest address settin) set as the main Lossnay in the roup. (Note 1) The input sinal must conform to the followin specifications: Level sinal Volt-free contact, 1 V DC, 4 V DC, the duration of ON and OFF should be 10-second or more. Pulse sinal Volt-free contact, 1 V DC, 4 V DC, the duration of ON should be 00 msec. or more, and minimum 10-second absence is necessary to the next pulse. In the case of relay contact input, use a relay havin a contact ratin of 15 V DC/0.1 A or hiher and a minimum applicable load of 1 ma or less. (Note ) Check the specifications of the external device. 10 m 15

16 3 Monitor output sinal cable No. Check Item Corrective action 1 Is the sinal cable wired by multicore cable? Wire the cable usin a -core cable. Are the sinal cables and transmission cables wired in the same pipin duct? 3 Is the power supply cable wired at least 5 cm away from sinal cables? 4 Is the sinal cable connected to the desinated terminal block? (See Table 3-1.) 5 Is the sinal cable incorrectly wired, is there a faulty connection or are screws loose? 6 Is the output capacity of the sinal cable within ratin? (See Table 3-1.) 7 Is the function selection for the external output sinal set correctly? Table 3-1 Monitor Output Specifications Wire the sinal cables away from the transmission cables. Wire the power supply cable at least 5 cm away from the sinal cables. Connect the sinal cable to the desinated terminal block. Connect the cable securely and correctly, and tihten the screws firmly. Use the sinal cable within ratin. Set the function selection switches (SW-8, 5-, and 5-6) on the circuit board correctly. Set the function settins (No. 57 and 58) of PZ- 61DR-E correctly. (See the Lossnay technical manual.) Terminal block TM3 90 TM3 80 TM3 70 Function Name Operation monitor Malfunction monitor Bypass monitor or Pre-heater Sinal specifications Volt-free contact Output ratin 40 V AC, 1 A 4 V DC, 1 A Min. applicable load 0 V AC, 100 ma 5 V DC, 100 ma 4 Function settin (See the Lossnay technical manual for details.) No. Check Item Corrective action 1 Is the main Lossnay set correctly? Check the function selection switch (SW5-10) on the circuit board. When an external sinal is input to multiple Lossnay units, set one of the units in the roup as the main Lossnay (SW5-10 ON). Are the function selection switches on the circuit board set correctly to suit the required application? 3 Is the applicable model used as the Lossnay remote controller? 4 When PZ-61DR-E is used, are the function selections set correctly to suit the required application? Set the function selection switches (SW and SW5) on the circuit board correctly. Use PZ-61DR-E or PZ-43SMF-E. (The air conditioner remote controller includin PAR-31MAA cannot be used.) Set the function selections correctly. 5 Was a function set with the function selection Set the function aain with PZ-61DR-E. switches on the circuit board after the function is set For the function that can be set with both PZwith PZ-61DR-E? 61DR-E and the function selection switches, if the function is set to other than "DIP-SW priority" with PZ-61DR-E, settin with the function selection switches is disabled. 6 Is the Lossnay address set correctly? Set the address settin switches (SA1 and SA) correctly. 16

17 5 LED Indications on the circuit board No. LED Contents Check Item Corrective action 1 LED1 Lossnay main unit Blinkin: Startin up, error occurred See Failure Mode 5. (reen) error indicator Lit: Durin delay operation Lossnay operates after the delay time has passed. LED (red) M-NET System error indicator 3 LED3 Remote controller power supply (reen) indicator 4 LED4 (red) 5 LED6 (red) Power supply indicator (control circuit board) Power supply indicator (power circuit board) Unlit: Other than above It is normal. Blinkin: Error occurred See Failure Mode 5. Lit: No M-NET connection information Unlit: Other than above Lit: Power supplied to the remote controller (Main Lossnay) Unlit: Power not supplied to the remote controller (Sub Lossnay) Check that this LED is lit Check that this LED is lit When usin M-NET, perform roup reistration with the system controller. It is normal. The LED oes out when power is supplied to the remote controller from other Lossnay units in a multiple Lossnay roup. The LED lihts while power is bein supplied to the control circuit board. The LED lihts while power is bein supplied to the power circuit board. (Do not touch components on the circuit board when the LED is lit.) 17

18 Individual function check items If Lossnay does not work in the trial operation after installation is completed, or if Lossnay stops workin durin use, check the followin items. No. Problem Factor Corrective action 1 The fan does not operate even throuh the trial operation switch (SW-1) on the circuit board is turned ON. Thouh the remote controller display indicates the fan is runnin, the fan stops by itself. The connectors between the fan motor and circuit board is disconnected. The connector between the control circuit board and power circuit board is disconnected. The model selection switch (SW6) is not set correctly. The temperature around the product is hih. Fan motor failure Circuit board failure The Lossnay unit is operatin in the protective mode (intermittent operation). The Lossnay unit is set to the delay operation. The interlocked air conditioner (Mr. Slim indoor unit or City Multi indoor unit) is defrostin. The system is switchin the ventilation mode. The temperature around the product is hih. Check the connector (CN9) for the exhaust fan motor and the connector (CN10) for the supply fan motor. Check the connector connections (CN18-CN118 and CN19-CN119). Check the connector connection (CN1-CN11). (For LGH-150RVX-E and LGH-00RVX-E only) Make the SW6 settin appropriate for the model. (See chapter 7. (8) Settin status record (pae 46).) Use the product at a temperature of 40 C or lower. Check the resistance between the motor leads. (See chapter 6. (7) Motor resistance table (pae 35).) If the measured value is sinificantly different from the values specified in the table, replace the fan motor. Disconnect the connectors (CN9 and CN10), and check the output voltae of each pin of the connectors within one minute after turnin the switch (SW-1) ON. (One minute later, the error will occur.) (See chapter 5. () Power circuit board (pae 11).) If the voltae value is abnormal, replace the circuit board. If the problem persists, replace the fan motor. When PZ-61DR-E is used, it displays the icon " " that indicates the protective operation is inproress. For details, see the Lossnay technical manual or remote controller manual. When PZ-61DR-E is used, it displays the icon " " that indicates the delay operation is inproress. LED1 (reen) on the control circuit board lihts. Lossnay operates in 30 minutes (or 15 minutes) after the air conditioner is operated to run. Check the function selection switch (SW5-1) on the circuit board or the function settin (No. 9) of PZ-61DR-E. (See the Lossnay technical manual.) The supply fan has been stopped to prevent cold air from blowin out. When the air conditioner finishes defrostin, the fan operation is started automatically. When switchin the ventilation mode (Enery recovery mode/bypass mode), the fan stops (for approx. 30 seconds). When the ambient temperature of the product is hih (hiher than 40 C), the fan may stop to prevent the fan motor from overheatin. 18

19 No. Problem Factor Corrective action 3 The fan does not stop even thouh the remote controller is operated to stop operation. 4 Even thouh the remote controller is operated to chane the fan speed, the fan speed does not chane. 5 The fan operation is unstable. 6 Air volume is abnormally lare or small. 7 The damper does not operate even throuh the trial operation switch (SW-1) on the circuit board is turned ON. The pre-heater or operation monitor with delay operation is set to be used. The indoor neative pressure settin or the indoor positive pressure settin is set. The external fan speed input is set. (CN17) The external fan speed input is set. (CN6) The system is operatin in the protective mode (intermittent operation). The pre-heater is ON. The motor rotation speed is under control. The model selection switch (SW6) is not set correctly after the circuit board is replaced. The connector between the damper motor and circuit board is disconnected. Mechanical failure Damper motor failure Circuit board failure 19 If the pre-heater or operation monitor with delay operation is set to be used, the fan continues operatin for three minutes after the stop operation. Check the function selection switches (SW-8 and 5-6) on the circuit board or the function settins (No. 57 and 58) of PZ-61DR-E. (See the Lossnay technical manual.) Check the function selection switches (SW- 4 and -5) on the circuit board or the function settins (No. 6 and 7) of PZ-61DR-E. (See the Lossnay technical manual.) When PZ-61DR-E is used, it displays the icon " ". Check the fan speed switchin input (CN17). When PZ-61DR-E is used, it displays the icon " ". Check the function selection switches (SW-3 and -6) on the circuit board or the function settin (No. 63) of PZ-61DR-E. (See the Lossnay technical manual.) When PZ-61DR-E is used, it displays the icon " " that indicates the protective operation is in-proress. For details, see the Lossnay technical manual or remote controller manual. When the pre-heater is ON, Lossnay runs at Fan speed or hiher speed. Even when Fan speed 1 is selected with the remote controller or external fan speed input, Lossnay runs at Fan speed. This product controls the motor by detectin the motor rotation speed. The fan operation may be unstable durin rotation speed control (for maximum about 10 minutes). Make the SW6 settin appropriate for the model. ( See chapter 7. (8) Settin status record (pae 46).) Check the connection of the connector (CN7) on the power circuit board. Remove the rod of the damper board and check if the damper board can be moved by hand. Remove the rod of the damper board and turn the trial operation switch (SW-1) ON. The damper motor operates in about 30 seconds. If the damper motor does not operate, replace the damper motor (GM assembly). Disconnect the connector (CN7) from the power circuit board and check the voltae value between the pins of CN7 when the trial operation switch (SW-1) is turned ON. (Voltae is output in about 30 seconds after switch ON.) If there is no voltae value, replace the circuit board. If the problem persists, replace the damper motor (GM assembly).

20 No. Problem Factor Corrective action 8 Even thouh the remote controller is operated to chane the ventilation mode, the ventilation mode is not chaned. 9 The ventilation mode cannot be switched when Lossnay is operatin in the automatic mode. 10 Air volume is too small. The outdoor temperature is 8 C or lower. The sinal is input to the Bypass mode switchin input (CN6 1). The pre-heater is ON, or within one hour after the pre-heater is turned OFF. Temperature condition for Enery recovery mode or Bypass mode is not satisfied. It has not passed 30 minutes since the ventilation mode is switched. The outdoor temperature is 8 C or lower. The sinal is input to the Bypass mode switchin input (CN6 1). The operation mode of the interlocked air conditioner (Mr. Slim indoor unit or City Multi indoor unit) is set to fan operation or heatin. The pre-heater is ON, or within one hour after the pre-heater is turned OFF. Is the air filter cloed? Pressure loss in the duct is too hih. The model selection switch (SW6) is not set correctly after the circuit board is replaced. The indoor neative pressure settin or the indoor positive pressure settin is set. Power supply voltae is low. In interlock with the air conditioner, the outdoor air intake port of the Lossnay unit is connected with the air conditioner by usin a duct. When the outdoor temperature is 8 C or lower, the ventilation mode is fixed to the Enery recovery mode. Check the Bypass mode switchin input (CN6 1). (See the Lossnay technical manual.) When the pre-heater is ON, or for one hour after the pre-heater is turned OFF, the ventilation mode is fixed to the Enery recovery mode. Check the temperature map. For details, see the Lossnay technical manual. Switchin of the ventilation mode is controlled in 30 minutes cycle. When the outdoor temperature is 8 C or lower, the ventilation mode is fixed to the Enery recovery mode. Check the Bypass mode switchin input (CN6 1). (See the Lossnay technical manual.) If the operation mode of the interlocked air conditioner is fan operation or heatin, the ventilation mode of Lossnay is fixed to the Enery recovery mode. When the pre-heater is ON, or for one hour after the pre-heater is turned OFF, the ventilation mode is fixed to the Enery recovery mode. Clean the air filter. Set the supply/exhaust fan power up settin. (See the Lossnay technical manual.) Make the SW6 settin appropriate for the model. ( See chapter 7. (8) Settin status record (pae 46).) Check the function selection switches (SW- 4 and -5) on the circuit board or the function settins (No. 6 and 7) of PZ-61DR-E. (See the Lossnay technical manual.) Check the power supply voltae. In this case, even if the Lossnay remote controller is operated to start Lossnay while the air conditioner is stopped, Lossnay will not supply air. 0

21 () Failure mode : The remote controller does not work. If the remote controller does not work after installation is completed, check the followin items. 1 PZ-61DR-E No. Problem Factor Corrective action 1 Nothin is displayed The power of the Lossnay unit is Check the items described in (1) 1. on the remote controller. Faulty connection of the remote Check the items described in (1). not ON. The ON/OFF lamp controller transmission cable does not blink. In one roup, three or more PZ- Only up to two PZ-61DR-E controllers can be 61DR-E controllers are connected. connected in one roup. The remote controller continues to display "Please Wait". Error code "6831" is displayed. 3 It takes time for the remote controller to be fed with power after turnin the Lossnay unit ON. In one roup, 16 or more Lossnay units are connected. The wirin lenth of the remote controller exceeds 00 m. In one roup, two or more Lossnay units are set as the main Lossnay (SW5-10 ON). The remote controller is startin up. Faulty connection of the remote controller transmission cable The remote controller transmission cable is connected to the terminal block (TB5 [A] [B]) for the M-NET transmission cable. PZ-43SMF-E is used toether. The Lossnay unit is startin up. Only up to 15 Lossnay units can be connected in one roup. The wirin lenth of the remote controller shall be within 00 m. Only one Lossnay unit can be set as the main Lossnay in one roup. The remote controller displays "Please Wait" durin start-up for maximum four minutes. Check the items described in (1). Connect the remote controller transmission cable to the terminal block (TM4 1). PZ-61DR-E and PZ-43SMF-E cannot be used toether. The remote controller is not fed with power durin start-up of the Lossnay unit for maximum one minute. PZ-43SMF-E No. Problem Factor Corrective action 1 The power indicator The power of the Lossnay unit is Check the items described in (1) 1. " " is not displayed. not ON. Faulty connection of the remote Check the items described in (1). controller transmission cable In one roup, three or more PZ- Only up to two PZ-43SMF-E controllers can be 43SMF-E controllers are connected. connected in one roup. "H0" is displayed on the remote controller. In one roup, 16 or more Lossnay units are connected. The wirin lenth of the remote controller exceeds 00 m. In one roup, two or more Lossnay units are set as the main Lossnay (SW5-10 ON). The remote controller is startin up. Only up to 15 Lossnay units can be connected in one roup. The wirin lenth of the remote controller shall be within 00 m. Only one Lossnay unit can be set as the main Lossnay in one roup. (See the Lossnay technical manual.) The remote controller displays "H0" durin startup for a maximum of one minute. 1

22 No. Problem Factor Corrective action 3 It takes time for the remote controller to be fed with power after turnin the Lossnay unit ON. The Lossnay unit is startin up. The remote controller is not fed with power durin start-up of the Lossnay unit for a maximum of one minute. 4 The inspection number "6801" is displayed on the remote controller. Faulty connection of the remote controller transmission cable The remote controller transmission cable is connected to the terminal block (TB5 [A] [B]) for the M-NET transmission cable. PZ-61DR-E is used toether. Check the items described in (1). Connect the remote controller transmission cable to the terminal block (TM4 1). PZ-43SMF-E and PZ-61DR-E cannot be used toether. (3) Failure mode 3: Operations on the remote controller are not possible. Initial Check Items If the system cannot be operated with the remote controller after installation is completed, check the followin items. No. Check item Notes 1 Are the function selection switches (SW and SW5) on the Lossnay circuit board set correctly to suit the required application? When PZ-61DR-E is used, are the function selections set correctly to suit the required application? 3 When PZ-61DR-E is used, are icons and characters displayed on the PZ- 61DR-E screen? 4 Is the system controller of M-NET used? Dependin on the settins of the function selection switches, Lossnay may automatically operate or stop, or specific operation may be unable to be performed with the remote controller. Dependin on the settins of the function selections, Lossnay may automatically operate or stop, or specific operation may be unable to be performed with the remote controller. Based on the icon and characters, you can check statuses such as the timer operation, Niht-pure, and protective operation. (See the Lossnay technical manual.) The system controller can be used to start/stop Lossnay, chane fan speed or ventilation mode, and prohibit the start/stop operation by PZ-61DR-E. 5 Is the external input used? If the interlock mode is set to the "External input priority ON/OFF interlock" and if the external device is operatin, the stop operation by PZ-61DR-E is prohibited. (See the Lossnay technical manual.) If the Remote/Local switchin (CN3) is set to remote, the start/ stop operation by the Lossnay remote controller is prohibited. (See the Lossnay technical manual.) Priority is iven to the operation by the fan speed switchin input and Bypass mode switchin input. (CN17, CN6) (See the Lossnay technical manual.)

23 Individual check items If the system cannot be started/stopped usin the remote controller after installation is completed, check the followin items. 1 PZ-61DR-E No. Problem Factor Corrective action 1 Some Lossnay units The power of the Lossnay unit is Check the items described in (1) 1. in the roup do not operate. not ON. Faulty connection of the remote controller transmission cable Check the items described in (1). The screen display of the remote controller chanes by itself. Even if you press the buttons, the screen returns to the oriinal screen riht away. 3 The ventilation mode cannot be chaned with the remote controller. The remote controller transmission cables are not correctly connected between the terminals (TM4 1) of the Lossnay units in the roup. The system is operatin in the protective mode (intermittent operation). Faulty connection of the remote controller transmission cable The roup wirin and the roup settin of the system controller do not match. When the system controller is used, the Lossnay unit, which is set as the main Lossnay (SW5-10 ON), is not set to the address with the smallest number in the roup. The Lossnay unit is performin the Niht-pure operation. The sinal is input to the Bypass mode switchin input (CN6 1). 4 Even thouh the The Lossnay unit is performin function settins (No. the Bypass mode ventilation. 37 and/or 38) of PZ- 61DR-E are set to "1", the indoor temperature and/or supply air temperature are not displayed. 5 Even thouh the function settins (No. 36, 37 and/or 38) of PZ-61DR-E are set to "1", the outdoor temperature, indoor temperature and/or supply air temperature are not displayed. 6 The indoor, outdoor, and/or supply air temperature display of PZ-61DR-E blink. The settin of PZ-61DR-E is not correct. The indoor, outdoor, and/or supply air temperature are outside the measurement rane. 3 Connect the remote controller transmission cables correctly between the terminals (TM4 1) of the Lossnay units in the roup. For details, see the Lossnay technical manual. Check the items described in (1). Check the roup wirin or the roup settin of the system controller. Set the Lossnay unit, which is set as the main Lossnay (SW5-10 ON) to the address with the smallest number. (See the Lossnay technical manual.) The ventilation mode cannot be chaned durin the Niht-pure operation. (See the Lossnay technical manual.) Check the Bypass mode switchin input (CN6 1). (See the Lossnay technical manual.) The indoor temperature and/or supply air temperature are not displayed durin the Bypass mode. Select "Yes" at "Temp. display" menu of PZ- 61DR-E. For details, see the installation manual of PZ-61DR-E. In the followin cases, the temperature display blinks. Outdoor temperature: 0 C or lower, 38 C or hiher Indoor and supply air temperature: 8 C or lower, 38 C or hiher

24 Interlockin with air conditioners (Mr. Slim indoor unit or City Multi indoor unit) or external devices No. Problem Factor Corrective action 1 Lossnay interlock The power of the Lossnay unit is Check the items described in (1) 1. settins cannot be performed with the remote controller. not ON. Faulty connection of the remote controller transmission cable Check the items described in (1). Lossnay address settin is incorrect. Check the Lossnay address. Lossnay does not perform interlock operation. The power of the Lossnay unit is not ON. Faulty connection of the remote controller transmission cable or external input/output sinal cables The Lossnay unit is not set for interlock operation. The terminal block connected and the type of external sinal do not match (chared or volt-free) The type of external sinal and input settin do not match (level sinal or pulse sinal). The Lossnay unit is set to the delay operation. The interlock mode of the Lossnay unit is set to "ON Interlock" or "OFF Interlock". In a roup of multiple Lossnay units, no Lossnay unit is set to the main Lossnay. In a roup of multiple Lossnay units, external control sinal is input to a Lossnay unit other than the main Lossnay. The Lossnay unit is operatin in the protective mode (intermittent operation). Check the items described in (1) 1. Check the items described in (1). Set the interlock settin. Check the type of external sinal and the connections of the external control input terminal (TM). Check the type of external sinal and the settin of the input (level or pulse). (See the Lossnay technical manual.) When PZ-61DR-E is used, it displays the icon " " that indicates the delay operation is inproress. LED1 (reen) on the control circuit board lihts. The Lossnay unit starts operation in 30 minutes (or 15 minutes) after startin operation by the air conditioner or external sinal. Check the function selection switch (SW5-1) on the circuit board or the function settin (No. 9) of PZ-61DR-E. (See the Lossnay technical manual.) Check the interlock mode settin. (See the Lossnay technical manual.) For a roup of multiple Lossnay units, set one Lossnay unit as the main Lossnay (SW5-10 ON) to input external control sinal. (See the Lossnay technical manual.) For details, see the Lossnay technical manual. 4

25 3 System controller No. Problem Factor Corrective action 1 The roup of The power of the Lossnay unit is Check the items described in (1) 1. Lossnay cannot be set with the system controller. not ON. M-NET transmission cable is connected to the remote controller terminal block (TM4 1). Connect the M-NET transmission cable to the M-NET transmission cable terminal block (TB5 [A] [B]). Some Lossnay units in the roup do not operate. 3 The screen display of the system controller chanes by itself. Even if you press the buttons, the screen returns to the oriinal screen riht away. Lossnay address settin is incorrect. Power is not supplied to the M-NET transmission cable. The wirin lenth of the M-NET transmission cable is loner than specified. (Loner than 00 m from the power supply unit, or loner than 500 m in total lenth) The power of the Lossnay unit is not ON. Faulty connection of the M-NET transmission cable The remote controller transmission cables are not correctly connected between the terminals (TM4 1) of the Lossnay units in the roup. The Lossnay unit is operatin in the protective mode (intermittent operation). Faulty connection of the remote controller transmission cable When PZ-61DR-E is used, the roup wirin and the roup settin of the system controller do not match. The Lossnay unit, which is set as the main Lossnay (SW5-10 ON), is not set to the address with the smallest number in the roup. Check the address settin switches (SA1 and SA) on the Lossnay circuit board. If the system is confiured with only Lossnay units, connect the power supply unit. (See the Lossnay technical manual.) Check the wirin lenth of the transmission cable. (See the Lossnay technical manual.) Check the items described in (1) 1. Check the items described in (1). Connect the remote controller transmission cables correctly between the terminals (TM4 1) of the Lossnay units in the roup. For details, see the Lossnay technical manual. Check the items described in (1). Check the roup wirin or the roup settin of the system controller. Set the Lossnay unit, which is set as the main Lossnay (SW5-10 ON) to the address with the smallest number. (See the Lossnay technical manual.) 5

26 (4) Failure mode 4: Lossnay does not work properly. Initial Check Items If Lossnay does not work properly after installation is completed, check the followin items. No. Check item Notes 1 Are the function selection switches (SW and SW5) on the Lossnay circuit board set correctly to suit the required application? When PZ-61DR-E is used, are the function selections set correctly to suit the required application? 3 When PZ-61DR-E is used, are icons and characters displayed on the PZ- 61DR-E screen? 4 Is the system controller of M-NET used? Dependin on the settins of the function selection switches, Lossnay may automatically operate or stop, or specific operation may be unable to be performed with the remote controller. Dependin on the settins of the function selections, Lossnay may automatically operate or stop, or specific operation may be unable to be performed with the remote controller. Based on the icon and characters, you can check statuses such as the timer operation, Niht-pure, and protective operation. (See the Lossnay technical manual.) The system controller can be used to start/stop Lossnay, chane fan speed or ventilation mode, and prohibit the start/stop operation by PZ-61DR-E. 5 Is the external input used? If the interlock mode is set to the "External input priority ON/OFF interlock" and if the external device is operatin, the stop operation by PZ-61DR-E is prohibited. (See the Lossnay technical manual.) If the Remote/Local switchin (CN3) is set to remote, the start/ stop operation by the Lossnay remote controller is prohibited. (See the Lossnay technical manual.) Priority is iven to the operation by the fan speed switchin input and Bypass mode switchin input. (CN17, CN6) (See the Lossnay technical manual.) Individual check items If Lossnay does not work after installation is completed, check the followin items. No. Problem Factor Corrective action 1 Actual fan speed of the Lossnay unit The sinal is input to the fan speed input (CN17). Check the fan speed input (CN17). (See the Lossnay technical manual.) differs from the fan The sinal is input to the fan speed Check the fan speed switchin input (CN6 speed set with the remote controller. switchin input (CN6 45). 45). (See the Lossnay technical manual.) Function settin (No. 8) of PZ- 61DR-E "Max. fan speed settin durin the first 30 minutes" is enabled. The indoor neative pressure settin or the indoor positive pressure settin is set. The system is operatin in the protective mode (intermittent operation). The pre-heater is ON. Lossnay operates at fan speed 4 for 30 minutes when operation starts. (See the Lossnay technical manual.) Check the function selection switches (SW-4 and -5) on the circuit board or the function settins (No. 6 and 7) of PZ-61DR-E. (See the Lossnay technical manual.) When PZ-61DR-E is used, it displays the icon " " that indicates the protective operation is in-proress. For details, see the Lossnay technical manual or remote controller manual. When the pre-heater is ON, Lossnay runs at fan speed or hiher speed. Even when fan speed 1 is selected with the remote controller or external fan speed input, Lossnay runs at fan speed. 6

27 No. Problem Factor Corrective action Even thouh the remote controller is operated to chane the ventilation mode, the ventilation mode is not chaned. 3 The Niht-pure operation cannot be stopped with PZ- 61DR-E. 4 Even thouh the Niht-pure is set, Lossnay does not perform the Nihtpure operation. 5 The Niht-pure operation stops in halfway throuh. The outdoor temperature is 8 C or lower. The sinal is input to the Bypass mode switchin input (CN6 1). The Lossnay unit is performin the Niht-pure operation. The pre-heater is ON, or within one hour after the pre-heater is turned OFF. Usual start/stop button operation cannot stop the Niht-pure operation. Conditions of the Niht-pure are not satisfied. The Niht-pure schedule is not set. The operatin condition became outside the Niht-pure conditions. The Lossnay remote controller or the system controller was operated to start or stop the operation of the Lossnay unit. A controller other than PZ-61DR-E or a controller that is not supportin Niht-pure is operated to chane the ventilation mode. When the outdoor temperature is 8 C or lower, the ventilation mode is fixed to the Enery recovery mode. Check the Bypass mode switchin input (CN6 1). (See the Lossnay technical manual.) The ventilation mode cannot be chaned durin the Niht-pure operation. (See the Lossnay technical manual.) When the pre-heater is ON, or for one hour after the pre-heater is turned OFF, the ventilation mode is fixed to the Enery recovery mode. Press the start/stop button once to display the operation screen, and then press the start/stop button aain. When the Niht-pure conditions such as the indoor/outdoor temperature are not satisfied, Lossnay does not perform the Niht-pure operation. For details, see the Lossnay technical manual. Check the settin of PZ-61DR-E or the system controller that supports Niht-pure operation. For details, see the Lossnay technical manual. When the operatin condition becomes outside the Niht-pure conditions, the Niht-pure operation ends. For details, see the Lossnay technical manual. When the start or stop operation is performed durin the Niht-pure operation, the Nihtpure operation ends. When a controller other than those supportin Niht-pure is operated to chane the ventilation mode, the system performs the normal ventilatin operation. (See the Lossnay technical manual.) 7

28 (5) Failure mode 5: Error code and LED display An error code displayed on the remote controller (PZ-61DR-E, PZ-43SMF-E) or the M-NET controller, and blinkin or illumination of LED1 (reen) or LED (red) on the circuit board show the type of an error. The LED blink interval is 0.5 seconds for both on and off. The display duration is approximately 7 seconds. Error display list Error Code LED1 (reen) LED (red) ON OFF 0.5 s 0.5 s 0.5 s 7 s Error display example: Two blinks Symptom Cause Corrective action 0900 Trial operation The trial operation switch (SW-1) on Check the trial operation switch. the circuit board is set to "ON". (See the Lossnay technical manual.) blinks External device error When the terminals (TM3 70) are set for pre-heater output (function selection switch (SW5-6) on the circuit board is ON, or the function settin (No. 58) of PZ-61DR-E set to ""), the followin conditions were satisfied. Outdoor air temperature detected by OA thermistor stays at 70 C or hiher for one minute. Outdoor air temperature detected by OA thermistor exceeds 15 C within 15 minutes after the pre-heater output starts. Outdoor air temperature is still -10 C or lower one hour after the pre-heater output starts. Causes of the above phenomenons are described below. See below. The pre-heater is connected to the wron terminal. Faulty connection of the pre-heater The output capacity of the pre-heater is too lare with respect to the air volume of the Lossnay unit. The output capacity of the pre-heater is too small with respect to the air volume of the Lossnay unit. Even thouh the pre-heater is in use, the function selection switch (SW5-6) on the circuit board is not set to ON, or the function settin (No. 58) of PZ- 61DR-E is not set to "". Even thouh the pre-heater is not in use, the function selection switch (SW5-6) on the circuit board is set to ON, or the function settin (No. 58) of PZ-61DR-E is set to "". Pre-heater failure Pre-heater relay failure Circuit board failure 8 Connect the pre-heater to the terminals (TM3 70). (See the Lossnay technical manual.) Check the pre-heater connections. Adjust the output capacity of the preheater. When the pre-heater is used, run the Lossnay at a hiher fan speed. Adjust the output capacity of the preheater. When the pre-heater is used, run the Lossnay at a lower fan speed. Check the settin of the function selection switch (SW5-6) on the circuit board or the function settin (No. 58) of PZ-61DR-E. (See the Lossnay technical manual.) Replace the pre-heater. Replace the relay for the pre-heater. Replace the circuit board.

29 Error LED1 Code (reen) blinks blink blinks LED (red) Symptom Cause Corrective action Overcurrent error of the remote controller terminal Abnormal rotation of the supply fan motor (in the lower unit for LGH- 150RVX-E and LGH-00RVX-E) (Centrifual fan does not work, insufficient motor speed, excessive motor speed, or rotation detected when operation is stopped) Abnormal rotation of the exhaust fan motor (in the lower unit for LGH- 150RVX-E and LGH-00RVX-E) (Centrifual fan does not work, insufficient motor speed, excessive motor speed, or rotation detected when operation is stopped) Shortin between remote controller terminals In one roup, two or more Lossnay units are set as the main Lossnay (SW5-10 ON). M-NET transmission cable is connected to the remote controller terminal block (TM4 1). Three or more remote controllers are connected. Circuit board failure Remote controller failure Faulty connection of the supply fan motor connector (CN10) on the power circuit board Faulty connection of the connectors (CN18 - CN118 and CN19 - CN119) between the control circuit board and power circuit board The model selection switch (SW6) is not set correctly. The temperature around the product is hih. The motor and centrifual fan are not fixed securely. Deformed centrifual fan Forein objects around the centrifual fan Check the remote controller wirin. Only one Lossnay unit can be set as the main Lossnay in one roup. (See the Lossnay technical manual.) Connect the M-NET transmission cable to the M-NET transmission cable terminal block (TB5 [A] [B]). Up to two remote controllers can be connected. Replace the circuit board. Replace the remote controller. Check the connector (CN10) connection. Check the connector connections (CN18 - CN118 and CN19 - CN119). Make the SW6 settin appropriate for the model. (See chapter 7. (8) Settin status record (pae 46).) Use the product at a temperature of 40 C or lower. Check the installation state of the motor and centrifual fan, and fix them securely. Replace the centrifual fan. Check the air course and around the centrifual fan, and remove any forein matter. Fan motor failure Replace the fan motor. (See pae 18.) Circuit board failure Replace the circuit board. Faulty connection of the exhaust fan Check the connector (CN9) connection. motor connector (CN9) on the power circuit board Faulty connection of the connectors (CN18 - CN118 and CN19 - CN119) between the control circuit board and power circuit board The model selection switch (SW6) is not set correctly. The temperature around the product is hih. The motor and centrifual fan are not fixed securely. Deformed centrifual fan Forein objects around the centrifual fan Check the connector connections (CN18 - CN118 and CN19 - CN119). Make the SW6 settin appropriate for the model. (See chapter 7. (8) Settin status record (pae 46).) Use the product at a temperature of 40 C or lower. Check the installation state of the motor and centrifual fan, and fix them securely. Replace the centrifual fan. Check the air course and around the centrifual fan, and remove any forein matter. Fan motor failure Replace the fan motor. (See pae 18.) Circuit board failure Replace the circuit board. 9

30 Error LED1 Code (reen) blinks 7 blinks LED (red) Symptom Cause Corrective action ( Only for LGH-150RVX-E and LGH-00RVX-E) Abnormal rotation of the supply fan motor in the upper unit (Centrifual fan does not work, insufficient motor speed, excessive motor speed, or rotation detected when operation is stopped) ( Only for LGH-150RVX-E and LGH-00RVX-E) Abnormal rotation of the exhaust fan motor in the upper unit (Centrifual fan does not work, insufficient motor speed, excessive motor speed, or rotation detected when operation is stopped) Faulty connection of the supply fan motor connector (CN10) on the power circuit board (upper) Faulty connection of the connectors (CN18 - CN118, CN19 - CN119, and CN1 - CN11) between the control circuit board and power circuit board Faulty connection of the reactor connectors (TB3 and TB4) on the power circuit board (upper) The model selection switch (SW6) is not set correctly. The temperature around the product is hih. The motor and centrifual fan are not fixed securely. Deformed centrifual fan Forein objects around the centrifual fan Fan motor failure Circuit board failure Faulty connection of the exhaust fan motor connector (CN9) on the power circuit board (upper) Faulty connection of the connectors (CN18 - CN118, CN19 - CN119, and CN1 - CN11) between the control circuit board and power circuit board Faulty connection of the reactor connectors (TB3 and TB4) on the power circuit board (upper) The model selection switch (SW6) is not set correctly. The temperature around the product is hih. The motor and centrifual fan are not fixed securely. Deformed centrifual fan Forein objects around the centrifual fan Fan motor failure Circuit board failure Check the connector (CN10) connection on the power circuit board (upper). Check the connectors connections (CN18 - CN118, CN19 - CN119, and CN1 - CN11). Check the connector (TB3 and TB4) connections on the power circuit board (upper). Make the SW6 settin appropriate for the model. (See chapter 7. (8) Settin status record (pae 46).) Use the product at a temperature of 40 C or lower. Check the installation state of the motor and centrifual fan, and fix them securely. Replace the centrifual fan. Check the air course and around the centrifual fan, and remove any forein matter. Replace the fan motor. (See pae 18.) Replace the circuit board. Check the connector (CN9) connection on the power circuit board (upper). Check the connectors connections (CN18 - CN118, CN19 - CN119, and CN1 - CN11). Check the connector (TB3 and TB4) connections on the power circuit board (upper). Make the SW6 settin appropriate for the model. (See chapter 7. (8) Settin status record (pae 46).) Use the product at a temperature of 40 C or lower. Check the installation state of the motor and centrifual fan, and fix them securely. Replace the centrifual fan. Check the air course and around the centrifual fan, and remove any forein matter. Replace the fan motor. (See pae 18.) Replace the circuit board. 30

31 Error LED1 Code (reen) blinks blinks LED (red) Symptom Cause Corrective action Outdoor air (OA) thermistor related error Indoor air (RA) thermistor related error Multiple address blinks error 660 Transmission blinks error (transmission processor hardware error) Faulty connection of the thermistor connector (CN) on the control circuit board Thermistor failure Faulty connection of the thermistor connector (CN5) on the control circuit board Thermistor failure The system contains two or more units (*1) set with the same address in the same M-NET transmission cable line. Faulty connection of the M-NET transmission cable Wirin was performed with power still supplied to the M-NET transmission cable. Accidental communication error Power is supplied to the same transmission cable from two or more power supply units. The power supply unit is connected to the TB3 terminal of the transmission booster. PZ-61DR-E is connected to the terminals (TB5 [A] [B]). Malfunction of the unit (*1) where an error occurs Check the connector (CN) connection. Disconnect the connector (CN), and check the resistance of the thermistor. If the equivalent thermistor resistance differs reatly from the ambient temperatures, replace the thermistor. (See (6) Temperatures and thermistor resistance table (pae 35).) Check the connector (CN5) connection. Disconnect the connector (CN5), and check the resistance of the thermistor. If the equivalent thermistor resistance differs reatly from the ambient temperatures, replace the thermistor. (See (6) Temperatures and thermistor resistance table (pae 35).) Find the units (*1) set with the same address, and set unique addresses to these units. Check the items described in (1). Restart the system after completin wirin. If the error re-occurs, check for noise on the transmission cable. If the above does not correct the problem, replace the Lossnay circuit board. Check the wirin of the power supply unit and the transmission booster. Connect PZ-61DR-E to the terminals (TM4 1). (See the Lossnay technical manual.) Check the unit (*1) where the error occurs. *1 This refers to devices assined an address number in MELANS such as the Lossnay unit, City Multi indoor unit, City Multi outdoor unit, or system controller. 31

32 Error LED1 LED Code (reen) (red) Transmission blinks error (transmission bus busy) Transmission/ blinks reception error (communication error with transmission processor) Transmission/ blinks reception error (no ACK error) Transmission/ blinks reception error (no response error) Symptom Cause Corrective action Faulty connection of the M-NET Check the items described in (1) transmission cable. Wirin was performed with power Restart the system after completin wirin. still supplied to the M-NET transmission cable. If the error re-occurs, check for Accidental communication error noise on the transmission cable. If the above does not correct the problem, replace the Lossnay circuit board. Power is supplied to the same transmission cable from two or more power supply units. The power supply unit is connected to the TB3 terminal of the transmission booster. PZ-61DR-E is connected to the terminals (TB5 [A] [B]). Malfunction of the unit (*1) where an error occurs Faulty connection of the M-NET transmission cable Wirin was performed with power still supplied to the M-NET transmission cable. Accidental communication error Check the wirin of the power supply unit and the transmission booster. Connect PZ-61DR-E to the terminals (TM4 1). (See the Lossnay technical manual.) Check the unit (*1) where the error occurs. Check the items described in (1). Restart the system after completin wirin. If the error re-occurs, check for noise on the transmission cable. If the above does not correct the problem, replace the Lossnay circuit board. Malfunction of the unit (*1) where an error occurs Check the unit (*1) where the error occurs. The power of the Lossnay unit is not Check the power of the Lossnay ON. unit. The Lossnay address was chaned. Check the Lossnay address. PZ-61DR-E is connected to the terminals Connect PZ-61DR-E to the ter- (TB5 [A] [B]). minals (TM4 1). (See the Lossnay technical manual.) Multiple M-NET transmission cables Usin the applicable cable, wire are wired usin multicore cables. the transmission cable away from one another. The M-NET transmission cable is not Check the transmission cable connections. securely connected. The wirin lenth of the M-NET Check the wirin lenth of the transmission cable is loner than transmission cable. specified. (Loner than 00 m from the power supply unit, loner than 500 m in total lenth) PZ-61DR-E is connected to the terminals (TB5 [A] [B]). Connect PZ-61DR-E to the terminals (TM4 1). (See the Lossnay technical manual.) *1 This refers to devices assined an address number in MELANS such as the Lossnay unit, City Multi indoor unit, City Multi outdoor unit, or system controller. 3

33 Error LED1 Code (reen) blinks blinks blinks blinks LED (red) Symptom Cause Corrective action PZ-43SMF-E communication error PZ-61DR-E communication error (no reception) PZ-61DR-E communication error (synchronization recovery error) PZ-61DR-E communication error (hardware error) Multiple PZ-43SMF-E transmission cables are wired usin multicore cables. The power supply cable is too close to the PZ-43SMF-E transmission cable. Faulty connection of the PZ- 43SMF-E transmission cable The wirin lenth of the PZ-43SMF-E transmission cable is loner than specified (00 m or more). The Lossnay is used in the same roup as LGH-RX5-E type Lossnay. PZ-43SMF-E is connected to the terminals (TB5 [A] [B]). Faulty connection of the PZ-61DR-E transmission cable The Lossnay is used in the same roup as LGH-RX5-E type Lossnay. PZ-61DR-E is connected to the terminals (TB5 [A] [B]). Faulty connection of the PZ-61DR-E transmission cable The Lossnay is used in the same roup as LGH-RX5-E type Lossnay. Faulty connection of the PZ-61DR-E transmission cable The Lossnay is used in the same roup as LGH-RX5-E type Lossnay. Usin the applicable cable, wire the transmission cable away from one another. Wire the power supply cable at least 5 cm away from the transmission cable. Check the transmission cable connections. Check the wirin lenth of the transmission cable. The LGH-RVX-E type Lossnay cannot be used in the same roup as LGH-RX5-E type Lossnay. Connect PZ-43SMF-E to the terminals (TM4 1). (See the Lossnay technical manual.) Check the items described in (1). If the error re-occurs, check for noise on the transmission cable. If the above does not correct the problem, replace the Lossnay circuit board or PZ-61DR-E remote controller. The LGH-RVX-E type Lossnay cannot be used in the same roup as LGH-RX5-E type Lossnay. Connect PZ-61DR-E to the terminals (TM4 1). (See the Lossnay technical manual.) Check the items described in (1). If the error re-occurs, check for noise on the transmission cable. If the above does not correct the problem, replace the Lossnay circuit board or PZ-61DR-E remote controller. The LGH-RVX-E type Lossnay cannot be used in the same roup as LGH-RX5-E type Lossnay. Check the items described in (1). If the error re-occurs, check for noise on the transmission cable. If the above does not correct the problem, replace the Lossnay circuit board or PZ-61DR-E remote controller. The LGH-RVX-E type Lossnay cannot be used in the same roup as LGH-RX5-E type Lossnay. 33

34 Error LED1 Code (reen) blinks blinks LED (red) Symptom Cause Corrective action PZ-61DR-E communication error (start bit detection error) Function settin error Faulty connection of the PZ-61DR-E transmission cable The Lossnay is used in the same roup as LGH-RX5-E type Lossnay. In one roup, two or more Lossnay units are set as the main Lossnay (SW5-10 ON). The roup contains two or more Lossnay units set with the same address. The Lossnay unit, which is set as the main Lossnay (SW5-10 ON), is not set to the address with the smallest number in the roup. The MA remote controller for the air conditioner (Mr. Slim indoor unit or City Multi indoor unit) is connected. The remote controller terminals (TM4 1) of the Lossnay unit and the remote controller terminals of the City Multi indoor unit are connected toether within the roup. The Lossnay is used in the same roup as LGH-RX5-E type Lossnay. The model selection switch (SW6) is not set correctly. Check the items described in (1). If the error re-occurs, check for noise on the transmission cable. If the above does not correct the problem, replace the Lossnay circuit board or PZ-61DR-E remote controller. The LGH-RVX-E type Lossnay cannot be used in the same roup as LGH-RX5-E type Lossnay. Only one Lossnay unit can be set as the main Lossnay in one roup. (See the Lossnay technical manual.) Set unique addresses to these units. Set the Lossnay unit, which is set as the main Lossnay (SW5-10 ON) to the address with the smallest number. (See the Lossnay technical manual.) Replace the remote controller with PZ-61DR-E. Assin the Lossnay units and City Multi indoor units to the different roups. The LGH-RVX-E type Lossnay cannot be used in the same roup as LGH-RX5-E type Lossnay. Make the SW6 settin appropriate for the model. (See chapter 7. (8) Settin status record (pae 46).) 34

35 (6) Temperatures and thermistor resistance table Temperature ( C) Resistance value (kω) Temperature ( C) Resistance value (kω) Temperature ( C) Resistance value (kω) Temperature ( C) Resistance value (kω) Temperature ( C) Resistance value (kω) to to 0.7 * Measure the indoor air (RA) thermistor resistance across pin No. 1 and of CN5, and the outdoor air (OA) thermistor resistance across pin No. 1 and of CN. (7) Motor resistance table Cautions: Before disconnectin the motor connectors, make sure that the power is turned OFF and the circuit board is dischared adequately. Even after the power supply is cut off, the capacitor is chared. Therefore, hih voltae is applied to the motor for a while. Make sure that the LEDs on the circuit board are turned OFF before startin work. Never touch the circuit board while the power is ON. It causes electric shock and failure of the unit. Replace the fan motor in the followin cases. 1 If it is hard to rotate the motor shaft by hand If the resistance between the motor leads is sinificantly different from the values specified in the table below *Before measurin the resistance, the motor connectors must be disconnected from the circuit board. LGH-15RVX-E, LGH-5RVX-E, LGH-35RVX-E, LGH-50RVX-E, LGH-65RVX-E Lead color Black-Red Black-White Black-Yellow Black-Brown Normal resistance About 450 kω About 40 kω About 90 kω kω LGH-80RVX-E, LGH-100RVX-E, LGH-150RVX-E, LGH-00RVX-E Lead color Black-Red Black-White Black-Yellow Black-Blue Normal resistance kω About 50 kω About 150 kω kω 35

36 7. Overhaulin procedures Work precautions When touchin the electric components such as circuit boards and fan motors, do not touch the components for more than 5 minutes after power-off, and then start workin. If LED4 on the circuit board is lit, do not touch the electric components. Before replacin parts, repair troubled sections accordin to the instructions described in the troubleshootin. When servicin, always keep proper footin. When servicin, always turn off the power supply isolator. Pay sufficient attention to avoid electrical shock or injury. Always connect the power wire properly. After completin repairs, check that the unit operates properly. Always wear loves when servicin. (1) Turnin power off 1 Shut down the unit. Turn off the power supply isolator. () Fan parts 1 Unscrew the black screws (three special (spl) screws 4 8, indicated by ) to remove the control cover. Control cover Serial number Check that LED4 on the circuit board is OFF, and then disconnect the motor connectors (indicated by ) from the power circuit board. Assembly precaution After connectin the motor connectors, tuck the excess leads into the main unit. Push in the leads. Power circuit board 3 Unscrew the black screw (one spl screw 4 8, indicated by ) for the fix piece. 36 Fix piece

37 4 Slide the fix piece to the left side. Fix piece 5 Pull out the hine, and open the maint. (maintenance) cover. Hine Maint. cover 6 Draw the Lossnay cores (with filters) from the main unit. Filter Lossnay core 7 Unscrew the screws (one spl screw M4 for each core uide, indicated by ), and remove the core uides (left (L) and riht (R)). Core uide L 37

38 8 Take off the separators. Separator 9 Unscrew the screws (indicated by ), and remove the motor fix plate. For LGH-15RVX-E and LGH-5RVX-E (Four PTT screws 4 10, indicated by ) Motor Motor fix plate For LGH-35RVX-E and LGH-50RVX-E (Six PTT screws 5 10, indicated by ) Motor Motor fix plate For LGH-65RVX-E to LGH-00RVX-E (Six PTT screws 5 10, indicated by ) Motor fix plate Motor 38

39 (3) Terminal block parts 1 Remove the control cover. See () 1. Check that LED4 on the circuit board is OFF, and then disconnect the connectors (indicated by ) from the power circuit board. Power circuit board 3 Unscrew the screw (one PT screw 4 8 (BS), indicated by ) and the lock washer (4). 4 Unscrew the screws (one PT screw 4 8 indicated by and one PPT screw 4 0 indicated by ), and remove the lead assembly with the terminal block. Lead assembly Terminal block (4) Control parts (For LGH-15RVX-E to LGH-100RVX-E) Precaution Before replacin the circuit boards, see (6) Procedures for replacin the circuit boards (on paes 43 to 45). 1 Remove the control cover. See () 1. Check that LED4 on the circuit board is OFF, and then disconnect the connectors (indicated by ) from the control circuit board. Control circuit board 3 Unscrew the screws (two PT screws 4 8, indicated by ), and remove the control circuit board. 39 Control circuit board

40 4 Disconnect the connectors (indicated by ) from the power circuit board. For the fan motor Assembly precaution After connectin the motor connectors, tuck the excess leads into the main unit. Push in the leads. For the terminal block For the reactor For the damper motor Power circuit board 5 Unscrew the earth fixin screw (one PT screw 4 8 (BS), indicated by ). 6 Unscrew the screw (one PT screw 4 8, indicated by ), and remove the power circuit board. Power circuit board 7 Unscrew the screws (four PTT screws 4 8, indicated by ), and remove the control unit from the main unit. Control unit 40

41 8 Unscrew the screws (three PT screws 4 8, indicated by ) to remove the control base. Control base 9 Unscrew the screws (two PT screws 4 8, indicated by ), and remove the reactor. (5) Control parts (For LGH-150RVX-E and LGH-00RVX-E) Reactor Precaution Before replacin the circuit boards, see (6) Procedures for replacin the circuit boards (on paes 43 to 45). When removin only the control circuit board 1 Unscrew the black screws (three spl screws 4 8, indicated by ) to remove the cover plate. Cover plate Check that LED4 on the circuit board is OFF, and then disconnect the connectors (indicated by ) from the control circuit board. 3 Unscrew the screws (two PT screws 4 8, indicated by ), and remove the control circuit board. 41 Control circuit board

42 When removin the power circuit boards or reactors 1 Unscrew the screws (eiht PT screws 4 8, indicated by ) to remove the control cover. Control cover Remove the circuit boards and reactors. [Upper unit] a. Disconnect the connectors (indicated by ). Power circuit board (upper) Reactor Assembly precaution After connectin the motor connectors, tuck the excess leads into the main unit. Push in the leads. b. Unscrew the screws (one PT screw 4 8, indicated by, one PT screw 4 8 (BS), indicated by ), and remove the power circuit board (upper). c. Unscrew the screws (two PT screws 4 8, indicated by ), and remove the reactor. Power circuit board [Lower unit] a. Remove the control circuit board. See (5) and 3 (on pae 41). b. Remove the power circuit board. See (4) 4 to 6 (on pae 40). c. Remove the reactor. See (4) 7 to 9 (on paes 40 and 41). Control circuit board When reassemblin Reassemble the unit in the reverse order of disassembly. After reassembly, always make a test run to be sure that the unit operates properly. 4