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SERVICE MANUAL

AIR

CONDITIONER

Please read this manual carefully before operating
your set and retain it for future reference.

Applied(AHU)
COMMUNICATION KIT
PAHCMR000, PAHCMS000

CONFIDENTIAL

www.lg.com

P/NO : MFL70041201

Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.

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Содержание PAHCMR000

Страница 1: ...al carefully before operating your set and retain it for future reference Applied AHU COMMUNICATION KIT PAHCMR000 PAHCMS000 CONFIDENTIAL www lg com P NO MFL70041201 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 2: ... 2 Ventilation System Service Manual TABLE OF CONTENTS Safety Precautions 3 Standards for Model 6 Functions Accessory 7 Wiring Diagram 8 Disassembly Diagram Deal Drawing 9 Troubleshooting 13 ...

Страница 3: ...all remote electric power supplies before servicing Internal components and circuit boards are at main potential when the equipment is connected to the power cables This voltage is extremely dangerous and may cause death or severe injury if come in contact with it When removing the front panel or cabinet execute short circuit and discharge between high voltage capacitor terminals If discharge is n...

Страница 4: ...connections can cause heat generation or fire Do not touch operate or repaire the product with wet hands Hoding the plug by hand when taking out Otherwise there is risk of electric shock or fire Do not turn on the breaker or power under condition that front panel cabinet top cover control box cover are removed or opened Otherwise it may cause fire electric shock explosion or death Be sure to earth...

Страница 5: ...section and the non charge metal section Earth position If the resistance value is low a disaster such as a leak or electric shock is caused at user s side Check to see if the terminal block is not dirty or loose If terminal block is dust or loose it can cause an electrical shock or fire Do not use a joined power cable or extension cable or share the same power outlet with other electrical applian...

Страница 6: ...Standards for Model 6 Standards for Model P AHCM S 000 Series 000 Multi V Single Model Classfication R Return Air Control S Supply Air Control Model Type AHCM AHU Comm Kit Accessory Type ...

Страница 7: ... the corresponding model name supplied with separate package Category Functions Model Individual control Remote controller PQRCVSL0 PQRCVSL0QW Optional Functions Model PAHCMS000 PAHCMR000 Input Operation on off O O Operation mode cool heat O O Output Operation on off O O Defrost signal O O Alarm signal O O Comp status O X ODU Capacity control O X 3rd Party DDC interlock O X ...

Страница 8: ...Wiring Diagram 8 Wiring Diagram Model PAHCMR000 Model PAHCMS000 ...

Страница 9: ...Wiring Diagram 9 n Main Module n Main Module ...

Страница 10: ...Disassembly Diagram Deal Drawing 10 Disassembly Diagram Deal Drawing Model PAHCMR000 263230A 263230B 263230C 247810A W4810 137215C 137215A 137215B ...

Страница 11: ... Control AGL75873901 1 R 137215B Panel Assembly Control AGL75874301 1 R 137215C Panel Assembly Control AGL76255601 1 R W4810 Bracket MAZ64606301 1 R 247810A Controller Assembly ACM75139001 1 R Comm PCB 263230A Thermistor Assembly NTC EBG62485901 1 R 263230B Thermistor Assembly NTC EBG62485902 1 R 263230C Thermistor Assembly NTC EBG62485903 1 R ...

Страница 12: ...Disassembly Diagram Deal Drawing 12 Model PAHCMS000 137215B W6631 137215C 137215A 263230A 263230B 247810B 263230C 247810A W4810 ...

Страница 13: ...ly Control AGL75874302 1 R 137215C Panel Assembly Control AGL76255701 1 R W4810 Bracket MAZ64606301 1 R 247810A Controller Assembly ACM75139001 1 R Comm PCB 247810B Controller Assembly ACM75098801 1 R Main PCB 263230A Thermistor Assembly NTC EBG62485901 1 R 263230B Thermistor Assembly NTC EBG62485902 1 R 263230C Thermistor Assembly NTC EBG62485903 1 R W6631 Harness Multi EAD64109806 1 R ...

Страница 14: ...emperature sensor error Temperature sensor disconnection or short circuit on pipe outlet of AHU Problem Cause Remedy AHU Communication Kit does not work No power supply Check the electrical connection and voltage of the power supply Wiring is wrong Check the electrical connection of the Communication Kit Refer to the circuit diagram of the Communication Kit AHU Communication Kit is broken Check th...

Страница 15: ...ge Temperature 3 3 1 Outdoor unit Constant Speed Compressor1 High Discharge Temperature System is turned off by Outdoor Uunit Constant Speed Compressor1 High Discharge Temperature 3 4 1 High Pressure of Outdoor Unit System is turned off by excessive increase of high pressure of Outdoor unit 3 5 1 Low Pressure of Outdoor unit System is turned off by excessive decrease of low pressure of Outdoor uni...

Страница 16: ...with Inverter Controller Outdoor unit Controller part cannot receive inverter control signals usually happens after on boarding 6 0 1 Inverter PCB EEPROM Error of Outdoor Unit Access Error of Inverter PCB of Outdoor unit 6 7 1 Outdoor unit Fan Lock Restriction of Outdoor unit 6 9 1 Constant1 CT Sensor Error of Outdoor Unit Constant1 CT Sensor open or short of Outdoor unit 7 0 1 Constant2 CT Sensor...

Страница 17: ...Outdoor Unit Pressure unbalance between Outdoor Units 1 7 3 1 Outdoor unit Constant Speed Compressor Fault Comp locking Check Valve leakage comp dielectric break down at Outdoor Unit 1 7 4 1 Outdoor unit rated speed 2 condenser over current Outdoor unit rated speed 2 condenser burned locked or fault by over current 1 9 0 1 Excessive increase of outdoor unit Inverter PCB Heat sink Temperature Outdo...

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