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1. TEMP LOK CLEAR ESC Indoor temp or Water temp Optional temp setting A HEATING D OPER Jo s Y 012345 s won TE WD THU FR SAT c cc oo 000 000 Roos OOOO OU ow es x Some functions may not be operated and displayed depending on the model Copyright 2013 LG Electronics Inc All right reserved 16 Only for training and service purposes LGE Internal Use Only Features 1 3 Control Panel Controller configuration D Display panel D Change temperature button 2 Dua 22 000 E 3 Water heating enable disable button SS LE Lu Power button RESERVATION SIMPLE AN WEEKLY HOLIDAY v v ov v ov v 912345 sin won We wo THU Fi gm 5 Mode heating button 6 Temperature setting mode button m06 000 000 A TEMP BG 96O OQO0 ra Lv o i e Function setting button Programming button cfe ls OK CLEAR button Display panel 2 ESC button G Temperature view mode button Direction button up down left right
2. Error diagnosis and countermeasure flow chart System stopped NO Water pump NO Control Panel NO while operation mE running Shows CH14 YES YES The flow switch is electrically closed Water is not enough or there can be water leakage inside water circuit Pressure gauge indicates 150 200 kPa YES 7 Water pum pis pu p it is normal still running condition YES Control Panel NO Shows CH14 YES How to identify Touch the terminal box black plastic box at the water pump of water pump and feel if the water pump is vibrating If no vibration the water pump is not operating Also you can see Water Pump Operating Icon Qe at control panel The flow switch is electrically open The water pump is in trouble Although there is not water flow inside water circuit the flow switch detects as if water is flowing It is due to electrically closed or short of flow switch or the contact of flow switch is mechanically stuck Contact official After Service Center and replace the flow switch Check the air vent If there is air in the unit it can display CH14 Please remove the air by using the air vent Check if water inside water circuit is fully charged Pressure gauge at the unit should indicate 150 200 kPa Also as the hand of the pressure gauge is not react so fast according to water charging check the pressure gauge again Othe
3. Ah caution After replace the INV PCB assembly make sure that connection of fan motor wires is correct INV PCB Main PCB Case blue housing Fan motor wire YELLOW terminal to Fan moter blue housing RED RED Fan motor wire YELLOW terminal to Fan moter white housing RED RED white housing If the connection between wires is incorrect performance of the unit would be decreased s 3 Caution for Assembling Outdoor Panels after Test Run When assemble the outdoor panels after replacement make sure that screws of top panel are assembled as shown figure below If screws are not assembled it allows rain come into control box causing defect of unit Copyright 2013 LG Electronics Inc All right reserved 33 Only for training and service purposes LGE Internal Use Only Caution for Assembling Outdoor Panels after Test Run Copyright 2013 LG Electronics Inc All right reserved 34 Only for training and service purposes LGE Internal Use Only Shooting Copyright 2013 LG Electronics Inc All right reserved 35 Only for training and service purposes pan mapuna any Trouble Shooting 1 Checking Key Components Of Unit sssssssseneennnnnnnnnnnnnnnnnnnnnnnnnnnn 37 AN Flow SUNG sett ces peta AA 37 12 Water PUMP AA 38 idu 39 UE Ni agsi Eeuip gc 40 1 5
4. DC Inverter heat pump H Heat pump Classification N Indoor unit U Outdoor unit B Monobloc Air to Water Heat Pump for R410A Model name and related information Model name ey 3 r Power source Unit Power Saree Cooling kW Heating kW Electric heater AHBW036H0 3 3 2 10 220 240 V 50 Hz AHBWO056A0 5 10 220 240 V 50 Hz 10 220 240 V 50 Hz AHBWO076A0 7 10 220 240 V 50 Hz 10 220 240 V 50 Hz AHBW096A0 9 10 220 240 V 50 Hz 10 220 240 V 50 Hz AHBW126A0 14 5 12 10 220 240 V 50 Hz 10 220 240 V 50 Hz AHBW146A0 15 5 14 10 220 240 V 50 Hz 10 220 240 V 50 Hz AHBW166A0 16 1 16 10 220 240 V 50 Hz 10 220 240 V 50 Hz AHBW128A0 14 5 12 3 380 415 V 50 Hz 3 380 415 V 50 Hz AHBW148A0 15 5 14 3 380 415 V 50 Hz 3 380 415 V 50 Hz AHBW168A0 16 1 16 3 380 415 V 50 Hz 3 380 415 V 50 Hz Tested under Eurovent Heating condition Inlet water temperature 30 C gt 35 C at outdoor ambient temperature 7 C 6 C 2 Tested under Eurovent Heating condition Inlet water temperature 23 C gt 18 C at outdoor ambient temperature 35 C 24 C Copyright 2013 LG Electronics Inc All right reserved 8 Only for training and service purposes LGE Internal Use Only External Apprearance 2 External Apprearance UN3 chassis UNA chassis Copyright 2013 LG Electronics Inc All right
5. Checking Key Components of Unit 1 2 Water Pump Water pump always running while system operation Heating Operation DIP Switch No 5 is setto OFF YES Water pump runs and stops while compressor start up Water pump always stop while system operation Water pump does not working END it is normal condition Water pump control by unit PCB is not correct It is normal condition that water pump runs or stops during system operation including compressor start up due to specific control logic Water pump does not because of mechanical defects of water pump or wrong wiring at the water pump To correct mechanical defects contact official After Service Center and replace the water pump O To correct wrong wiring check if wires CN_W PUMP A connector on the unit PCB and water pump terminal box black plastic box at the water pump are connected firmly Also check wires are electrically connected by measuring resistance of each wires if electrically connected exactly resis tance should be 0 ohm Unit PCB can not make control signal or wrong wiring at the water pump To correct unit PCB s making control signal first check the signal level Use electric voltage meter and measure voltage at CN W PUMP A connector on the unit PCB If measured value is not G 220 V 240 V AC while Water Pump Operating Icon is displayed at contro
6. G http biz Igservice com THERMAV System MODEL AHBW AO AHBW036H0 CAUTION Before servicing the unit read the safety precautions in general SVC manual Only for authorized service personnel THERMAV AWHP Service Manual TABLE OF CONTENTS Safety Precaution Part 1 General Information 1 Model Information 2 External Appearance Part 2 Features amp Controls 1 List of Function 2 Features 3 Test Run Part 3 Replacement 1 Replacement procedure for Compressor 2 Replacement Procedure for INV PCB 3 Caution for Assembling Outdoor Panels after Test Run Part 4 Trouble Shooting 1 Checking Key Components of Unit 2 Checking Key Components of Outdoor Unit 3 Self Diagnosis Feature 4 Trouble Shooting Guide Copyright 2013 LG Electronics Inc All right reserved 2 Only for training and service purposes Ea ona Sy Safety Precautions il Safety Precautions To prevent injury to the user or other people and property damage the following instructions must be followed E Be sure to read before installing the product E Be sure to observe the cautions specified here as they include important items related to safety E Incorrect operation due to ignoring instruction will cause harm or damage The seriousness is classified by the fol lowing indications A WARNING This symbol indicates the possibility of death or serious injury N ACAUTION This symbol indicates the possibility of
7. Reliability Hot start Self diagnosis Ol O Ol Soft dry operation Defrost Deicing High pressure switch O OO O OO O OO Low pressure switch Phase protection Restart delay 3 minutes Self diagnosis Soft start IOIOo lOO IOIOo Test function Convenience Auto changeover Auto cleaning Auto operation artificial intelligence Auto restart operation Child lock Forced operation Group control Sleep mode Timer on off Timer weekly Two thermistor control Individual control Standard wired remote controller control panel Deluxe wired remote controller Simple wired remote controller Wired remote controller for hotel use Wireless remote controller simple Wireless LCD remote control CAC network function General central controller Non LGAP Dry contact PQDSA Network Soluation LGAP PDI power distribution indicator PI 485 PMNFP14A0 PMNFP14A0 PMNFP14A0 Special function kit Zone control CTIE Electro thermostat Low ambient operation Others Remote room temperature sensor TH8 PQRSTAO PQRSTAO PQRSTAO Thermistor AWHP Water Pump ON OFF Control Flow Switch Control ojo ojo ojo Thermostat Interface 230 V AC Thermostat Interface 24 V AC San
8. 1 to port 2 port 3 to port YES y 4 and port 5 to port 6 of MCCB A should be 0 ohm Port number and location of MCCB A can be found circuit diagram of the unit back side of front cover 5 For single phase model At Relay Contactor A measure electric voltage at port 2 Live and port 6 Neutral with voltage meter The mea sured value should be 220V 240V AC Also at Relay Contactor B mea sure electric voltage at port 2 Live and port 6 Neutral with voltage meter The measured value should be 220V 240V AC 5 For three phase model At Magnet Contact C or Magnet Contact B resistance between port L1 to port T1 port L2 to port T2 and port L3 to port T3 should be 0 ohm No ELB or MCCB cuts o ELB or MCCB OK Power or ELB or MCCB trouble YES Relay More than 5 minutes No Electric heater the location of Terminal Block 3 please refer circuit diagram of unit at elapsed since electric working time Ka Installation Manual or backside of front cover of the unit heater working is not enough 3 For single phase model Find cover of thermodisk which is located beside air vent Air vent is on the top of the electric heater tank Uncover YES the cover by unscrewing bolts Find two copper leads located both left and 9 right side of the thermodisk core Check resistance of both leads The External electric NO Electric power measured resistance should be 0 ohm After then check if voltage is power supply O
9. 7times 3 times Error indicator outdoor PCB Outdoor unit error Ex Error 21 DC Peack 2 Times 2 Times 2 Times LED01G RED lt gt jb ig iy Ng ia i1Sec i 41Sec i i F1 Sec iur LEDO2G GREEN A CAUTION Precaution in service or check Even after stopping the operation of product it takes some time to discharge the remaining electricity of the electrolytic capacitor that was charged early Before conducting a checking or repairing job pull out the plug out of the outlet and make sure that the lamp on the control board outdoor unit is off DMA T LES Copyright 2013 LG Electronics Inc All right reserved 48 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide B 3 Trouble Shooting Guide s Description Cause Normal Condition 01 Problem in Remote Room Air sensor Incorrect Resistance 10kO ohm at 25 centigrade 02 Problem in Refrigerant Inlet side sensor connection unplugged between for Remote Room Air sensor 06 Problem in Refrigerant Outlet side sensor d C sensor and Resistance 5kQ ohm at 25 centigrade 08 Problem in Water Tank sensor PCB unplugged 13 Problem in Solar thermal sensor for all sensors EXCEPT Remote Room 16 Problems in sensors PCB fault Air Sensor 17 Problem in Water inlet sensor Sensor tauir Otaga 2 5 VDC al Zo Collado
10. Blinking oce Description Unit No t bad Kant Kati Error LED1 Red LED2 Green 21 DC Peak IPM Fault O Outdoor 1 time 22 CT 2 Max CT O Outdoor 2 times 23 DC Link Voltage is low O Outdoor 3 times 24 High Pressure Low Pressure switch activated O Outdoor 4 times 25 Voltage is too low or too high O Outdoor 2times 5 times 26 Problem in DC Compressor positioning O Outdoor 6 times 27 PSC Fault O Outdoor 7 times 28 DC Link Voltage is high O Outdoor 8 times 29 High current at Compressor phases O Outdoor 9 times 32 Temperature at discharge pipe is too high O Outdoor 3 times 2 times 37 The pressure ratio is too high O Outdoor 7 times 40 Problem in CT sensor O Outdoor none 41 Problem in discharge pipe temperature sensor O Outdoor 1 time 44 Problem in ambient temperature sensor O Outdoor 4times 4 times 45 Problem in condenser pipe temperature sensor O Outdoor 5 times 46 Problem in suction pipe temperature sensor O Outdoor 6 times 52 Bad communication between internal PCBs O Outdoor 5 times 2 times 53 Bad communication between unit and Outdoor unit O Outdoor 3 times 60 EEPROM Checksum mismatched O Outdoor none 61 Temperature at condenser pipe is too high O Outdoor 1 time 62 Temperature at heatsink is too high O Outdoor 6times 2 times 63 Temperature at condenser pipe is too low O Outdoor 3 times 65 Problem in heatsink temperature sensor O Outdoor 5 times 73 Instant over current input O Outdoor
11. C Plug the sensor on main PCB 1 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes Correct connection Change the sensor Estimate the Voltage Is the voltage of the sensor is 4 5 V DC 2 5 V DC at 25 C of each sensor No Change the sensor Yes Repair or Change the PCB Unplugged Plugged 10 KQ 2 5 V DC C L UD T A lt J Check the resistance Check the voltage 66 LGE Internal Use Only Trouble Shooting Guide Bai Title Cause of error Check point amp Normal condition 51 Over tapacii Over capacity Check the unit capacity pasiy Combination Check the combination table EEPROM Check the connection port 60 Check sum Check a Check the poor soldering Check Flow Chart CH51 Check the unit combination Check the outdoor unit max combination Is it normal Yes Check PCB No Correct connection Check Flow Chart CH60 Check the the connection port Is it normal Yes No Correct connection Change EEPROM Copyright 2013 LG Electronics Inc All right reserved 67 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Babad Title Cause of error Check point amp Normal condition Transmission GU Main controller of Master 1 Power cable o
12. Cause of error Check point amp Normal condition 28 Inverter DC link high voltage error Inv PCB DC link voltage supplied over 780V 1 Input voltage abnormal L N 2 ODU inverter PCB damage DC Link voltage sensing part x It is related to AHBW 6 0 model E Error Diagnosis and Countermeasure Flow Chart Is input voltage normal Is inverter PCB assembly normal For single phase check L N phase is 220V 21096 For triple phase check R N S N T N phase are 220V 21096 and R S S T T R phase are 380V 10 Check connection condition and wiring if power is abnormal Recheck power and Linstallation condition Measuring input voltage Noise filter wiring Copyright 2013 LG Electronics Inc All right reserved 59 Only for training and service purposes Replace inverter PCB assembly LGE Internal Use Only Trouble Shooting Guide Di basi Title Cause of error Check point amp Normal condition Low High pressure Check the connection of CN PRESS 24 piesa Open S W open Check the SVC V V open Check the leakage of refrigerant Check Flow Chart Is the wire connection No 2 normal Correct connection Is the soldering state of connector is No normal Re soldering component Is the SVC Valve opened No Open SVC Valve Check the leakage of refrigerant Check Pressure of suction pipe Check Pre
13. Check CO1N No Is it normal 4 0 V DC 1 Change Main PCB Check TRANS Is it normal hs i Change TRANS Change main PCB Copyright 2013 LG Electronics Inc All right reserved 64 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Check Flow Chart Check Over load condition Refrigerant leakage Condenser is blocked Outdoor fan is locked No Remove obstruction Change outdoor fan or motor Change refrigerant Unplug the sensor on Outdoor unit PCB Check the Connector connection Is it normal No Correct connection Estimate the resistance of each sensor Copyright 2013 LG Electronics Inc All right reserved 65 Only for training and service purposes Babad Title Cause of error Check point amp Normal condition Check the discharge pipe sensor for INV D pipe Inverter Discharge sensor Check the install condition for over load 32 temp high Inverter temp high Check the leakage of refrigerant 105 C l Check the SVC V V open Refer to sensor resistance table Check the discharge pipe sensor for Cons D pipe Constant Discharge sensor Check the install condition for over load 33 temp high Cons temp high Check the leakage of refrigerant 105 C1 Check the SVC V V open Refer to sensor resistance table Is the resistance of the sensor is 200 kO at 25 C Y
14. Guide Display coda Title Cause of error Check point amp Normal condition Malfunction of compressor 22 Max C T Over current Blocking of pipe Low voltage input Refrigerant pipe length blocked 1 Check Pipe clogging distortion 2 Check Covering Indoor Outdoor Unit 3 Check EEV connector assemble condition normal operation 4 Check refrigerant pressure Reassemble or manage if abnormality found Is installation condition normal i 1 Check resistance between each terminal of compressor Are the resistance U V 1 083 U W 1 123 V W 1 096 ep BREN DIESE Sd 2 Check insulation resistance between compressor insulation resistance of Inverter terminal and pipe over 50 MO compressor normal Replace compressor if abnormality found 1 Check inverter PCB assembly U V W connector connection condition 2 Check wire disconnection and wiring 3 Check compressor terminal connection condition bad contact Reassemble if abnormality found Is compressor Wire connection condition normal Check connection between inverter PCB assembly and bridge diode misconnection disconnection wiring again if abnormality found Is inverter PCB assembly power connection normal Check Is input voltage normal 1 R S S T T R phase are 380 V 10 R N S N T N phase are 220 V 10 Check connection condition and wiring if power is abnormal Check inverter PC
15. injury or damage to properties only E Meanings of symbols used in this manual are as shown below D Be sure not to do _ Be sure to follow the instruction A A WARNING Always ground the product There is a risk of electric shock For electrical work contact the dealer seller a qualified electri cian or an Authorized Service Center Do not disassemble or repair the product by yourself There is risk of fire or electric shock Use the correctly rated breaker or fuse There is risk of fire or electric shock Do not install the product on a defective installation stand Be sure that the installation area does not deteriorate with age It may cause product to fall Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes Do not use a defective or under rated circuit breaker Use the correctly rated breaker and fuse There is risk of fire or electric shock Always ground the product as per the wiring diagram Do not connect the ground wire to gas or water pipes lightening rod or telephone ground wire There is risk of fire or electric shock Do not modify or extend the power cable If the power cable or cord has scrathes or skin peeled off or deteriorated then it must be replaced There is risk of fire or electric shock Never install the outdoor unit on a moving base or a place from where it can fall down T
16. reserved 9 Only for training and service purposes LGE Internal Use Only External Apprearance UN4 chassis Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes 10 LGE Internal Use Only s amp Controls Copyright 2013 LG Electronics Inc All right reserved 11 Only for training and service purposes Pan mapuna any List of Function E 1 List of Function Category Function AHBW056A0 AHBW076A0 AHBW096A0 Installation Drain pump E S P control Indoor Box High ceiling operation Reliability Hot start Self diagnosis Ol Ol Ol Soft dry operation Defrost Deicing High pressure switch Low pressure switch oooO Oooo Oooo Phase protection Restart delay 3 minutes Self diagnosis Soft start oOo OO OlO Test function Convenience Auto changeover Auto cleaning Auto operation artificial intelligence Auto restart operation Child lock Forced operation Group control Sleep mode Timer on off Timer weekly Two thermistor control Individual control Standard wired remote controller control panel Deluxe wired remote controller Simple wired remote controller Wired remote controller for hotel use Wi
17. water will be generated and it is harmful to human Room air is not fully heated by under floor s heating Wait while room air is heated by target temperature of thermostat Leaving water temperature is higher than 62 C Copyright 2013 LG Electronics Inc All right reserved 54 Only for training and service purposes pee one Meany Trouble Shooting Guide y i Description Cause Normal Condition 20 Electric Heater Overheated Abnormal operation of If there is no problem in electric heater electric heater Leaving water temperature is above 90 C control possible maximum leaving water temperature is 62 C Leaving water temperature is higher than target water temperature Leaving water temperature is higher than 90 C Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes it is normal condition END O heating This is unexpected case Turn off the system and call service center If the system is not turned off before it yields error code CH20 very hot leaving water will be generated and it is harmful to human f Error Code CH20 is occurred please check thermostat electric heater power supply and others Also it is recommended to check air vent which is located on the top of the electric heater tank Room air is not fully heated by under f
18. 20 C Resistance at 20 C U V U W V W Terminal All models AHBWO96A0 0 997 0 980 0 965 U GND More than 2M AHBWO76A0 0 997 0 980 0 965 V GND More than 2M AHBWO56A0 0 997 0 980 0 965 W GND More than 2M Copyright 2013 LG Electronics Inc All right reserved f9 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Copyright 2013 LG Electronics Inc All right reserved a Only for training and service purposes pee one Meany P NO MFL58346405 APRIL 2013
19. 2013 LG Electronics Inc All right reserved 24 Only for training and service purposes LGE Internal Use Only Features Function Code 23 24 and 25 Setting weather dependent operation Weather dependent operation is that the product automatically adjusts target temperature leaving water or room air according to the outdoor air temperature Value 1 and Value 2 of Function Code 23 range of outdoor air temperature Value 1 and Value 2 of Function Code 24 range of auto adjustable target room air temperature Value 1 and Value 2 of Function Code 25 range of auto adjustable target leaving water temperature Note Weather dependent operation is applied for heating mode only Auto Adjustable Target Temperature Temperature profile of Weather dependent Value 1 of eperaven Function Code 24 or 25 Value 2 of Function Code 24 or 25 pb Outdoor Value 1 of Value 2 of air temperature Function Code 23 Function Code 23 Copyright 2013 LG Electronics Inc All right reserved 25 Only for training and service purposes LGE Internal Use Only Features Function Code 26 and 27 Setting disinfection operation Disinfection operation is special sanitary tank operation mode to kill and to prevent growth of viruses inside the tank Value 1 of Function Code 26 Selecting enable or disable of disinfection operation 00 for disable and 01 for enable Value 2 of Function Code 26 Deter
20. 3 30 164 79 4 508 10 20 25 4 66 35 136 64 4 418 15 15 87 4 57 40 113 98 4 318 20 12 55 4 47 45 95 62 4 208 25 10 4 35 50 80 65 4 088 30 8 03 4 21 55 68 38 3 958 35 6 49 4 06 60 58 27 3 82 40 5 28 3 89 65 49 88 3 674 45 4 33 3 71 70 42 9 3 522 50 3 57 3 52 75 37 05 3 365 55 2 96 3 32 80 32 14 3 205 60 2 47 3 11 85 27 99 3 043 65 2 07 2 9 90 24 46 2 88 70 1 74 2 69 95 21 46 2 719 75 1 48 2 48 100 18 89 2 561 80 1 26 2 28 110 14 79 2 255 85 1 07 2 09 120 11 72 1 972 90 0 92 1 9 130 9 4 1 716 95 0 8 1 73 140 7 62 1 487 100 0 69 1 57 150 6 24 1 287 72 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Check of compressor E Check resistance of the compressor li Check Insulation resistance of the compressor Copper Comp Model Resistance at 20 C Resistance at 20 C U V U W V W Terminal All models AHBW166A0 0 520 0 516 0 513 U GND More than 2Mz AHBW146A0 0 520 0 516 0 513 V GND More than 2Mz AHBW126A0 0 520 0 516 0 513 W GND More than 2Mz Model Resistance at 25 C Resistance at 25 C U V U W V W Terminal All models AHBW168A0 1 183 1 174 1 181 U GND More than 2Mz AHBW148A0 1 183 1 174 1 181 V GND More than 2Mz AHBW128A0 1 183 1 174 1 181 W GND More than 2M Model Resistance at
21. 5 146 97 4 62 20 53 55 4 481 20 107 09 4 492 15 39 5 4 322 15 79 4 336 10 29 48 4 131 10 58 95 4 149 5 22 24 3 91 5 44 47 3 931 0 16 95 3 661 0 33 9 3 685 5 13 05 3 389 5 26 09 3 416 10 10 14 3 102 10 20 27 3 131 15 7 94 2 808 15 15 89 2 838 20 6 28 2 515 20 12 55 2 546 25 5 2 232 25 10 2 262 30 4 01 1 965 30 8 03 1 994 35 3 24 1 717 35 6 49 1 745 40 2 64 1 493 40 5 28 1 519 45 2 16 1 293 45 4 32 1 316 50 1 78 1 116 50 3 56 1 137 55 1 48 0 962 55 2 95 0 981 60 1 23 0 828 60 2 46 0 846 65 1 03 0 714 65 2 06 0 729 70 0 87 0 615 70 1 74 0 628 75 0 74 0 531 75 1 47 0 542 80 0 63 0 459 80 1 25 0 469 85 0 54 0 397 85 1 07 0 406 90 0 46 0 345 90 0 92 0 353 95 0 4 0 3 95 0 79 0 307 100 0 34 0 262 100 0 68 0 268 71 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Heatsink Temp D Pipe Temp B Constant 3970 B Constant 3500 Std Temp 25 Std Temp 25 Resistance 10 Resistance 200 Temp Resistance Volt Temp Resistance Volt 30 102 17 4 71 30 2845 99 4 969 25 73 49 4 61 0 585 66 4 851 20 53 55 4 48 5 465 17 4 814 15 39 5 4 32 10 372 49 4 77 10 29 48 4 13 15 300 58 4 717 5 22 24 3 91 20 244 33 4 657 0 16 95 3 66 25 200 4 587 5 26 05 4 7
22. B assembly IPM normality Replace inverter PCB assembly Is inverter PCB assembly normal Yes Recheck power and installation condition Copyright 2013 LG Electronics Inc All right reserved 57 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide piss Title Cause of error Check point amp Normal condition 1ph DC link volt is 140 23 DC Link VDC 4 Check the power source Low voltage 3ph DC link volt is 250 Check the components VDC 4 1ph DC link volt is 14 P EVON RISU Check the power source DC Link VDC s Chedeth t 28 High voltage 3ph DC link volt is 250 pite IA VDC x It is related to AHBW 8A0 model Is input voltage normal Is inverter PCB assembly power connection normal Is inverter PCB assembly normal Check R S S T T R phase are 380 V 10 R N S N T N phase are 220 V 10 Check connection condition and wiring if power is abnormal Check connection from terminal block to inverter PCB assembly CN L1 R CN L2 S CN L3 T wiring again if abnormality found Check inverter PCB assembly IPM normality Replace inverter PCB assembly Recheck power and installation condition Copyright 2013 LG Electronics Inc All right reserved 58 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Display code Title
23. C Plugged Check Flow Chart Check Over load condition Refrigerant leakage Condenser is blocked Outdoor fan is locked No Remove obstruction Change outdoor fan or motor Change refrigerant Unplug the sensor on main PCB 2 Check the Connector connection Is it normal No Correct connection Estimate the resistance of each sensor Copyright 2013 LG Electronics Inc All right reserved 69 Only for training and service purposes Is the resistance of the sensor is 5 kO 110 KQ at 25 C No Change the sensor Plug the sensor on Indoor unit PCB Estimate the Voltage of each sensor Is the voltage of the sensor is 4 5 V DC 2 5 V DC at 25 C No Change the sensor Repair or Change the PCB LGE Internal Use Only Trouble Shooting Guide Display code Title Cause of error Check point amp Normal condition 1 Overload operation Pipe clogging Covering EEV defect Ref overcharge 2 Compressor damage Insulation damage Motor damage 3 Input voltage abnormal L N 4 Power line assemble condition abnormal 5 Inverter PCB assembly damage input current sensing part AC input instant over cur Inverter PCB input power 73 rent error current is over 24 A Matter of software peak for 2ms Check Flow Chart Is installation condition normal 1 Check Pipe clogging distortion 2 Check Covering Indoor Outdoor Un
24. COMPO SS OF me n 41 1 6 Iu gc 42 1 7 Electronic Expansion ValWe 1n aicut tor hr saa nu cce agn aui ctum x evx kr aaa nnuE 43 2 S lf Diagnosis Peak m 46 2 1 Concept of Classified Trouble eese 46 2 2 zqd5 48 o e T Y 47 3 Trouble Shooting Guide 49 Copyright 2013 LG Electronics Inc All right reserved 36 Only for training and service purposes LGE Internal Use Only Checking Key Components of Unit a 1 Checking Key Components of Unit NO Control Panel Shows CH14 System stopped while operation Water pump running Water is not enough or there can be water leakage inside water circuit NO The flow switch is Pressure gauge REN electrically closed ndicates 150 200 kP YES END it is normal condition Control Panel Shows CH14 YES Water pump still running YES The flow switch is electrically open The water pump is in trouble How to identify Touch the terminal box black plastic box at the water pump of water pump and feel if the water pump is vibrating If no vibration the water pump is not operating Also you can see Water Pump Operating Icon I at control panel Although there is not water flow inside water ci
25. Code 01 Test run Test run should be performed when additional refrigerant charging is required To charge the refrigerant the prod uct must run in Cooling mode Test run instantly makes the product working in cooling mode for 18 minutes Note If you press any kind of button during this mode Test run mode will be finished After running 18 minutes under test run mode system will automatically turn OFF Function Code 02 Disable 3 minute delay Factory use only Function Code 03 Remote air sensor connection If user connects remote air sensor to control the product by room air temperature the connection information should be notified to the product Note If remote air sensor is connected but this function code is not set correctly the product can not be con trolled by room air temperature Function Code 04 Celsius Fahrenheit switching Temperature is displayed in Celsius or Fahrenheit Function Code 05 Setting temperature selection The product can be operated according to air temperature or leaving water temperature The selection for setting temperature as air temperature or leaving water temperature is determined Note Note Air temperature as setting temperature is ONLY available when remote air sensor connection is enabled and Function Code 03 is set as 02 Function Code 06 Auto dry contact This function allows the dry contact operate under auto run mode or manual mode with remote controller Funct
26. K is not supplied transmitted to the thermodisk correctly Measure electric voltage between one of the lead Live of the thermodisk and port 3 Neutral of ELB A VES The measured value should be 220 V 240 V AC Th rem T Thermodisk is 8 For three phase model Find cover of thermodisk which is located iiobis not correctly E side of electric heater tank Uncover the cover by unscrewing bolts Find oe working two copper leads located both left and right side of two thermodisk core YES Check resistance of both leads of each thermodisks The measured resis l is not working Electric heater is not normal Wait for 5 minutes to heat water inside electric heater tank If capacity of electric heater is 6kW at least 2 centi grade will be increased For single phase model Check if external electricity power supply is breakout If not check wiring between exter nal electricity power supply and port 3 and port 4 of Terminal Block 3 You can identify the location of Terminal Block 3 at the circuit diagram of unit For three phase model Check if external electricity power supply is breakout If not check wiring between external electricity power supply and port 3 port 4 and port 5 of Terminal Block 3 You can identify the location of Terminal Block 3 at the circuit diagram of unit Thermodisk is mechanically defected In this case contact official After Service Center and replace the thermodisk Check the insulation resistanc
27. OPERATION AA THE AG o Eu E rj F gt ta CONTROL INFORMATION OF o ram pe Lan DO AA Baon 0 Heating 5 Water Tank Electric Heater t Water Pipe Anti Freezing t Weather dependent Heating G Water Pump Water Tank Disinfection i Space Temp Solar Heating Pump E Outdoor Unit Water Inlet Temp Water Tank Heating Enable Disable 25 Child Lock E Water Outlet Temp F2 Water Tank Heating by Heat Pump 9 Not Available Function Central Controller A Silent Mode ON OFF AN Slight Trouble Thermostat lt lt Water Tank Temp A Heavy Trouble W Electric Heater 1 Ch Solar Heating Temp ANG Electric Heater 2 Defrost Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes E ram LGE Internal Use Only Features 2 Special Function 2 1 Child Lock Function This function prevents children or others from tampering with the control buttons on the unit All the buttons on indoor display panel will blocked The function is used to restrict children to not to use the AWHP carelessly CL is an abbreviated form of Child Lock 1 Press Function Setting button to enter user setting mode The segment will be flashed Io Be PAG S gas n tj S esc 2 J Press OK CLEAR button to finish the selection T
28. Reassemble if abnormality found Check U V V W W U phase is 220 240 V 10 Check connection condition and wiring if power is abnormal Recheck power and installation condition Copyright 2013 LG Electronics Inc All right reserved 62 Only for training and service purposes Check inverter PCB assembly IPM normality Replace inverter PCB assembly LGE Internal Use Only Trouble Shooting Guide Babad Title Cause of error Check point 4 Normal condition Transmission Error Communication Error 1 Micom defect Circuit defect 39 Between PFC Micom Between PFC Micom 2 Different Micom S W Version INV Micom and INV Micom 3 Inverter PCB assembly damage Check Flow Chart Is PFC Micom and INV Micom S W Program normal Upgrade Micom Program Is Inverter PCB assembly normal Replace inverter PCB assembly Recheck power and installation condition Copyright 2013 LG Electronics Inc All right reserved 63 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Babad Title Cause of error Check point amp Normal condition 40 CIT vihitial emet eror Malfunction of current detection circuit Internal circuit Open Short The voltage of CO1N Is 4 0 V DC 25 A t Check Flow Chart Check the input power AC 230 V Is it normal 220 240 V 1096 No Correct connection
29. Troubleshooting After hot start Guide Yes Normal Copyright 2013 LG Electronics Inc All right reserved 29 Only for training and service purposes LGE Internal Use Only ment Copyright 2013 LG Electronics Inc All right reserved 30 Only for training and service purposes pa mapuna api Replacement Procedure for Compressor E 1 Replacement Procedure for Compressor 9 Remove the sound proof covering the faulty com pressor and disconnect the power Disconnect the brazing sections of suction pipe and discharge pipe by using brazing torch after the refrig erant has been pumped out or collected completely Remove three nuts at cushion rubber section to take out the faulty compressor outside the unit Figure 1 gt Install the new compressor in the unit Be sure to insert the cushion rubbers before tightening the fixing nut of compressor Remove the rubber caps put on the suction and discharge pipe of the new compressor to release the sealing nitrogen gas Braze the suction and discharge pipe with brazing torch to the compressor Conduct air tight test to check the piping system is free from leakage Connect power cable to the terminal board of com pressor and cover the compressor with sound proof Figure 25 Conduct vacuum 10 After completion of vacuum open the service Copyright 2013 LG Electronics Inc All right reserved valves If recovery
30. correctly improper operation or degrade of performance can be expected 3 1 DIP Switch Setting 44CAUTION Turn off electric power supply before setting DIP switch Whenever adjusting DIP switch turn off electric power supply to avoid electric shock General information ON a OFF is selected c3 ON is selected Copyright 2013 LG Electronics Inc All right reserved 20 Only for training and service purposes LGE Internal Use Only Features DIP switch setting Description Setting Default Role when central controller is equipped As Master As Slave Accessory installation information Unit is installed Unit Sanitary water tank is installed Emergency operation Level High temperature cycle Low temperature cycle External water pump installation information External water pump is NOT installed External water pump is installed Selecting electric heater capacity Step 2 capacity is used Step 1 capacity is used Electric heater is not used Thermostat installation information Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes Thermostat is NOT installed Thermostat is installed 21 LGE Internal Use Only Features 3 2 Control Panel Setting Summary Example of function code display Fi erdgnue pr LIC 093 Ll Function Code Value 1 Value 2 Common setting Function
31. e oj Ala BG O LA lt Sanitary Water Heating enable gt Copyright 2013 LG Electronics Inc All right reserved 26 Only for training and service purposes poe ra USE Only Features Function Code 28 and 29 Setting control parameter for sanity water heating operation Descriptions for each parameters are as following Value 1 of Function Code 28 temperature gap from Value 2 of Function Code 28 Value 2 of Function Code 28 maximum temperature generated by AWHP compressor cycle Example If Value 1 is set as 5 and Value 2 is set as 48 then Session A see the graph will be started when the water tank temperature is below 45 C If temperature is above 48 C then Session B will be started Value 1 of Function Code 29 temperature gap from target sanitary water temperature This value is required to frequent On and Off of water tank heater Value 2 of Function Code 29 Determining heating demand priority between sanitary water tank heating and under floor heating Example If user s target temperature is set as 70 and Value 1 is set as 3 then the water tank heater will be turned off when the water temperature is above 73 C The water tank heater will be turned on when the water temperature is below 70 C Example If Value 2 is set as 0 that means heating priority is on sanitary water heating sanitary water is heat ed by AWHP compressor cycle and water
32. e of Electric Heater If the insulation resistance has improper remove the cause of the problem and then reset the ELB or MCCB Replace the ELB or MCCB when the insulation resistance is suitable Relay contactor is is mechanically defected In this case contact official After Service Center and replace the relay contactor Heating coil of electric heater can be damaged or wiring inside the electric heater is problem Before replacing the electric heater in this case contact official After Service Center and do diagnosis about electric heater and related parts including the capacity of extemal electric power source If the reason of malfunction is clearly proved as the defect of the electric heater itself then replace it OG i O with new one l 39 Copyright 2013 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes Checking Key Components of Unit 1 4 Remote Controller To solve various troubles while using control panel please read following FAQ Frequently Asked Questions For your convenience all questions are classified according to topics played automatically control panel someties it displays specific icons and the system operates auto matically No Topic Question Answer 1 Power button does System installation is fin There can be a problem in wiring between PCB not bright ished Also all wirings and control panel Open control box a
33. ect the EEV connector form control board and Check and replace unit Driving circuit connect testing LED unit control board failure e O e O e a o e pi o e gt O e a o 1K LED 2 Main power ON pulse signal is out from EEV for 17 sec If LEDs do not turn on or are in on state continuously then driving circuit is abnormal EEV locking 1 If EEV is locked in no load state the driving motor rotate Replace EEV and clicking sound always occurs EEV Motor coil 1 Check the resistance between coil terminal Replace EEV short or red white red yellow red orange red blue misconnection 2 If the estimated resistance value is in 52 x 3 Q then the EEV is normal 1 Check the resistance between coil terminal Replace EEV brown white brown yellow brown orange brown blue 2 If the estimated resistance value is in 150 10 O then the EEV is normal Copyright 2013 LG Electronics Inc All right reserved 45 Only for training and service purposes LGE Internal Use Only Self Diagnosis Feature Bi 2 Self Diagnosis Feature 2 1 Concept of Classified Tro e Definition of terms Trouble a problem which can stop system operation and can be resumed temporarily under limited operation without certificated professional s assist Error a problem which can stop system operation and can be resumed ONLY after certificated professional s check Emergency mode temporary heating operatio
34. efrigerant leakage and check whether the power or transmission cable is connected properly Confirm that 500 V megger shows 2 0 MOQ or more between power supply terminal block and ground Do not operate in the case of 2 0 MO or less NOTE Never carry out mega ohm check over terminal control board Otherwise the control board may break Immediately after mounting the unit or after leaving it tumed off for an extended length of time the resistance of the insulation between the power supply terminal board and the ground may decrease to approx 2 0 MO as a result of refrigerant accumulation in the internal compressor If the insulation resistance is less than 2 0 MQ turn on the main power supply Copyright 2013 LG Electronics Inc All right reserved 28 Only for training and service purposes LGE Internal Use Only Features 2 Test Run Flow chart Start Operate the unit in cooling mode Refer to part4 6 electric part Does test operation start Yes Is cold water discharged for No more than 3 minutes Yes Refer to part4 5 cycle part Is there any temperature difference between intake and discharged water Yes Is the operating current No Check the load In Out Temp normal Check pipe length and amount of Yes refrigerant Check for abnormal sound in outdoor unit comp fan others Operation mode change to Heating mode Is hot water discharged No Refer to
35. eplace after checking Main PCB 1 fault Replace after checking Is main circuit breaker off Check if the transmission cable is properly connected to terminal block of main PCB 1 and main PCB 2 CN OIL RY C COMP ev eahep e2 aT ls em M rd POWER TO INDOOR SUPPLY UNIT CHO5 is displayed at unit CH53 is displayed at outdoor unit Copyright 2013 LG Electronics Inc All right reserved 51 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide damage a the EEPROM Error diagnosis and countermeasure flow chart Replace the main PCB 1 Copyright 2013 LG Electronics Inc All right reserved 52 Only for training and service purposes ra Description Cause Normal Condition 09 PCB Program EEPROM Fault Electrical or mechanical This error can not be permitted LGE Internal Use Only Trouble Shooting Guide co i Description Cause Normal Condition 14 Problem in Flow Switch Flow switch is open while Flow switch should be closed while inter internal water pump is working nal water pump is working or DIP switch Flow switch is closed while inter No 5 of main PCB 1 is set as ON nal water pump is not working NM Flow switch should be open while Flow switch is open while DIP internal water pump is not working switch No 5 of main PCB 1 is set as ON
36. erature is under the specific temperature 3 Water tank heating or related features are not permitted Setting water tank temper ature is not permitted although the water tank is installed Following two conditions should be satisfied Check if Water tank enable disable button is cor rectly pushed or not To use water tank end user must push button and highlight 5 icon Otherwise water tank heating is disabled Also check if DIP switch setting is correct or not To identify the DIP switch setting open the control box inside the unit Unless 2nd and 3rd pin of DIP switch setting is 01 OFF ON or 10 ON OFF the water tank heating will not be configured Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes 40 LGE Internal Use Only Checking Key Components of Unit 1 5 Compressor Check and ensure in following order when error related with the compressor or error related with power occurs during operation when starting operation Method to measure insulation resistance Method to measure coil resistance error appears again No Checking Item Symptom Countermeasure 1 Is how long power on during 1 Power on for 12 hours or more Go to No 2 operation 2 Power on for 12 hours or less Go to No 2 after applying power for designated time 12 hours 2 Does failure appears again 1 The compre
37. es No Change the sensor Plug the sensor on unit PCB Estimate the Voltage of each sensor Is the voltage of the sensor is 4 5 V DC at 25 C No Change the sensor Repair or Change the PCB LGE Internal Use Only Trouble Shooting Guide abad Title Cause of error Check point amp Normal condition pr Connector connection error Normal resistor 200 kO at 25 C Unplugged pa Pa Marec LN Faulty PCB Normal voltage 4 5 V DC at 25 C plugged PIP Faulty sensor Open Short Refer to sensor resistance table Connector connection error Normal resistor 10 kQ at 25 C Unplugged 44 Air sensor e Faulty PCB Normal voltage 2 5V DC at 25 C plugged Faulty sensor Open Short Refer to sensor resistance table e Connector connection error Normal resistor 5 kO at 25 C Unplugged d a e e Faulty PCB Normal voltage 2 5 V DC at 25 C plugged P Faulty sensor Open Short Refer to sensor resistance table Heat sink Connector connection error Normal resistor 5 kO at 25 C Unplugged 65 Serion Faulty PCB Normal voltage 2 5 V DC at 25 C plugged Faulty sensor Open Short Refer to sensor resistance table Check Flow Chart Unplug the sensor on main PCB 1 Check the Connector connection Is it normal No Estimate the resistance of each sensor Is the resistance of the No 15 kO at 25
38. g Copyright 2013 LG Electronics Inc All right reserved 46 Only for training and service purposes poe Mion teeny Self Diagnosis Feature 2 2 Error Code List Code m Classification l No Description Slight Heavy Option Enos Unit Trouble Trouble Trouble 01 Problem in Remote Room Air sensor O Indoor 02 Problem in Refrigerant Inlet side sensor O Indoor 03 Bad communication between control panel and indoor unit O Indoor 05 Bad communication between Indoor unit and Outdoor unit O Indoor Outdoor 06 Problem in Refrigerant Outlet side sensor O Indoor 08 Problem in Water Tank sensor O Water Tank 09 PCB Program EEPROM Fault O Indoor 13 Problem in Solar thermal sensor O Indoor 14 Problem in Flow Switch O Indoor 15 Water pipe overheated O Indoor 16 Problems in sensors O Indoor 17 Problem in Water inlet sensor O Indoor 18 Problem in Water outlet sensor O Indoor 19 Problem in Water interlim sensor O Indoor 20 Electric heater overheated O Indoor e Notice of error code Slight Heavy Option Troubles lowercases ch code no Errors capital letters CH code no Copyright 2013 LG Electronics Inc All right reserved 47 s Only for training and service purposes LGE Internal Use Only Self Diagnosis Feature Cad Classification LED
39. h them and cause injury When installing the unit use the installation kit provided with the product Otherwise the unit may fall and cause severe injury Be cautious when unpacking and Do not open the front grille of installing the product Sharp edges could cause injury Especially careful on the product edges and the fins on the heat exchanger Be cautious that water could not be poured to the product direct ly There is risk of fire electric shock or product damage Take care to ensure that nobody especially kids could step on or fall onto the outdoor unit This could result in personal injury and product damage Do not plug or unplug the power supply plug to turn the unit ON OFF There is risk of fire or electric shock Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury elec tric shock or product failure Turn the main power off and unplug the unit when cleaning or repairing the product e There is risk of electric shock Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on Do not use the telephone or tur
40. he falling outdoor unit can cause damage or injury or even death of a person 3 Do not use a multi consent Always use this appliance on a dedicated cicuit and breaker Otherwise it can cause electric shock or fire Install the panel and the cover of control box securely e There is risk of fire or electric shock due to dust water etc For installation removal or rein stall always contact the dealer or an Authorized Service Center There is risk of fire electric shock explosion or injury When the product is soaked flood ed or submerged in water con tact an Authorized Service Center for repair before using it again There is risk of fire or eletric shock LGE Internal Use Only Safety Precautions Indoor outdoor wiring connec tions must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the con nection terminals Improper or loose connections can cause heat generation or fire In outdoor unit the step up capacitor supplies high voltage electricity to the electrical com ponents Be sure to discharge the capacitor completely before conducting the repair work An charged capacitor can cause electrical shock Safely dispose off the packing materials Like screws nails bat teries broken things etc after installation or svc and then tear away and thraw away the plastic packaging bags Children may play wit
41. he segment will be disappear OPERATION ES STATUS 3 During Child Lock cB icon and CL will be displayed during 3 seconds whenever entering any kind of buttons except for view temperature button and setting clear button KO f me LL 4 To release this setting pressing function setting button until coh o icon flash and then enter S setting clear button Copyright 2013 LG Electronics Inc All right reserved 18 Only for training and service purposes LGE Internal Use Only Features 2 2 Sleep Timer Operation When the sleep time is reached after lt 1 2 3 4 5 6 7 0 cancel hrs is input by the control panel while in appliance oper ation the operation of the appliance stops While the appliance is on pause the sleep timer mode cannot be input 2 3 Timer On Off 2 3 1 On Timer Operation When the set time is reached after the time is input by the control panel the appliance starts to operate The timer LED is on when the on timer is input It is off when the time set by the timer is reached If the appliance is operating at the time set by the timer the operation continues 2 3 2 Off Timer Operation When the set time is reached after the time is input by the control panel the appliance stops operating The timer LED is on when the off timer is input It is off when the time set by the timer is reached If the appliance is on pause at the
42. heater In this case the under floor can not be heated while sanitary water heating On the other hand if the Value 2 is set as 1 that means heating priority is on under floor heat ing sanitary tank is ONLY heated by water heater In this case the under floor heating is not stopped while sani tary water is heated Water temperature Inside sanitary water tank Water heater off temperature Value 1 of Target sanitary water Function Code 29 temperature set by user Value 2 of Function Code 28 Value 1 of Function Code 28 Starting temperature of sanitary water heating Session A Session C Session B pa E co D BEEN Time Session A Heating by AWHP compressor cycle and water heater Session B Heating by water heater Session C No heating Water heater is Off Session D Heating by water heater Function Code 2A Miscellaneous setting Value 1 of Function Code 2A determine electric heater and water heater on and off Value 2 of Function Code 2A not used Example If Value 1 is set as 0 then electric heater and water heater are on and off according to control logic If Value 1 is set as 1 then electric heater is never turned on and only water heater is on and off according to control logic Copyright 2013 LG Electronics Inc All right reserved 27 Only for training and service purposes poe Mion teeny Features IJ 3 Test Run 1 Check to see whether there is any r
43. ing of Water Pipe Emergency Operation Screed drying OOo OJ OIO O OI OO o Ol Notes O Applied X Not applied No relation Accessory Installed at field ordered and purchased separately by the corresponding model name supplied with separate package Copyright 2013 LG Electronics Inc All right reserved 15 Only for training and service purposes LGE Internal Use Only Features Hi 2 Features 1 Summarized Fea 1 1 Emergency control OPERATION Lise Len yen Sk cA Gf N ANIMO BG AUTO a Ta C Slight Mmm Heavy ME TET F trouble trouble WINE Ae Ar JL oN 0ff 7 TUS 2345 SUN MON TUE WED THU Fi SAT es DO BH CONTROL Bi Oo AA io amp amp amp c Ka a fi CO Ka o zJ o 8 1 2 Display panel Inlet water temp OPERATION SILENT Easy checking of system failure Slight Heavy trouble y Emergency operating Heavey trouble Electric heater ON Secure at least heating before A S Outlet water temp Hot water temp ON LILI Solar source temp EE SIMPLE SLEEP J ON JL orr
44. ion Code 07 Address setting When central controller is installed address assigning is set by this function Copyright 2013 LG Electronics Inc All right reserved e225 Only for training and service purposes poe ra USE Only Features Temperature range setting Function Code 13 Setting air temperature in heating mode Determine heating setting temperature range when air temperature is selected as setting temperature AWARNING Only available when remote air temperature sensor is connected Accessory PQRSTAO should be installed Also Function Code 03 should be set properly Function Code 14 Setting leaving water temperature in heating mode Determine heating setting temperature range when leaving water temperature is selected as setting temperature Function Code 15 Setting sanitary tank leaving water temperature Determine heating setting temperature range of water tank leaving water A WARNING Only available when sanitary water tank feature is installed e Sanitary water tank and sanitary water tank kit should be installed DIP switch No 2 and 3 should be set properly Function Code 18 Screed drying mode After installing water pipes for under floor heating user can select screed drying mode for curing the cement Value 1 01 Screed drying mode operating 00 Screed drying mode is not operating Value Z2 not used Copyright 2013 LG Electronics Inc All right reserved 23 Only for t
45. it 3 Check EEV connector assemble condition normal operation 4 Check refrigerant pressure Reassemble or manage if abnormality found Check Is input voltage normal R S S T T R phase voltage is 220 240 V 10 Check connection condition and wiring if power is abnormal 1 Check R S T connection condition Is AC input Wire connection gt 2 Check wire disconnection and wiring condition normal Reassemble if abnormality found Yes 1 Check inverter PCB assembly U V W connector connection condition 2 Check wire disconnection and wiring 3 Check compressor terminal connection condition bad contact Reassemble if abnormality found Is compressor Wire connection condition normal Is inverter PCB zen Check inverter PCB assembly IPM normality normal Replace inverter PCB assembly Yes Recheck power and installation condition Copyright 2013 LG Electronics Inc All right reserved 70 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Sensor resistance table Pipe Temp Air Temp B Constant 3977 B Constant 3977 Std Temp 25 Std Temp 25 Resistance 5 Resistance 10 Temp Resistance Volt Temp Resistance Volt 30 102 17 4 714 30 204 35 4 72 25 73 49 4 611 2
46. itary Tank Heating PHEX Anti Freezing Control Water Pump Forced Operation Autosetting according to Ambient Temperature Silent Operation Anti overheating of Water Pipe Emergency Operation Screed drying O Q O Q O O Q O Q O O Q O Q O O Q O Q O ool oooO oooO Notes O Applied X Not applied No relation Accessory Installed at field ordered and purchased separately by the corresponding model name supplied with separate package Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes 13 LGE Internal Use Only Category Function AHBW128A0 AHBW148A0 AHBW168A0 Installation Drain pump E S P control Indoor Box High ceiling operation Reliability Hot start Self diagnosis Ol Ol Ol Soft dry operation Defrost Deicing High pressure switch Oooo OJOO OoOO Low pressure switch Phase protection Restart delay 3 minutes Self diagnosis Soft start JO O IOIO OIO Test function Convenience Auto changeover Auto cleaning Auto operation artificial intelligence Auto restart operation Child lock Forced operation Group control Sleep mode Timer on off Timer weekly Two thermistor control Individual control Standard wired remote c
47. k of fire or product failure Do not expose your skin or kids or plants to the cool or hot air draft This could harm to your health Do not recharge or disassemble the batteries Do not dispose off batteries in a fire They may burn or explode Do not drink the water drained from the product It is not sanitary and could cause serious health issues Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Information Copyright 2013 LG Electronics Inc All right reserved f Only for training and service purposes pan mapuna ani Model Information n 1 Model Information With advanced inverter technology THERMAVW is suitable for applications like under floor heating and hot water generation By Interfacing to various accessories user can customize the range of the application In this chapter general information of THERMAV is presented to identify the installation procedure Before beginning installation read this chapter carefully and find helpful information on installation 1 Model Information l Model number nomenclature LATE Ee Edo Je Ee l Lo Serial number Chassis name Function A General heating heat pump H Sanitary heating only T High temperature heating heat pump Product electric power rating 6 10 220 240 V 50 Hz 8 30 380 415 V 50 Hz Heating capacity kW Ex 16 16kW class Model Type W
48. l panel the unit PCB is in trouble In this case contact official After Service Center and replace the unit PCB To correct wrong wiring please refer Copyright 2013 LG Electronics Inc All right reserved 38 Only for training and service purposes LGE Internal Use Only Checking Key Components of Unit 1 3 Electric Heater l 1 When electric heater is working Electric Heater Operating Icon MWior AN2 is displayed at control panel 2 For single phase model Measure electric voltage at port 3 Live and port 4 4 Neutral of Terminal Block 3 with voltage meter The measured value should be Electric heater is 220 V 240 V AC To identify the location of Terminal Block 3 please refer circuit working diagram of unit at Installation Manual or backside of front cover of the unit 2 For three phase model Measure electric voltage at two port of YES 3 R 4 S and 5 T of Terminal Block 3 with voltage meter The mea sured value should be 220 V 240 V AC or 380 V 415 V AC To identify tance should be 0 ohm While uncovering the cover of the thermodisk be careful for electric shock 4 For single phase model Resistance between port 1 and port 2 should s ka 0 GI AGO port 3 di pod 4 dud iN 0 pu 2 dies deed NO electric voltage at port 2 Live and port 4 Neutral with voltage meter The Ts conser measured value should be 220V 240V AC ene 4 For three phase model Resistance between port
49. loor Wait while room air is heated by target temperature of thermostat 55 LGE Internal Use Only Trouble Shooting Guide Display Poor insulation of IPM coda Title Cause of error Check point amp Normal condition An instant over current in the U V W phase Comp lock Instant over current The abnormal connection of U V W 21 DC Peak Over Rated current Over load condition Overcharging of refrigerant Pipe length Poor insulation of compressor Check Flow Chart Check the wire connection U V W Is it normal Check the resistance of comp No difference at each terminal Is it normal Check the electricity leakageof the compressor Refer to comp check table Is it normal Check the input power No Correct No Change Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes connection Compressor Is it normal 10 230 V 10 3 6 400 V 1096 Yes No Needs electric work Check DC link capacitor Is it normal No Refer to belows Change DC link capacitor or Main PCB 2 Check Over load condition Remove obstruction Overcharging of Change outdoor fan No refrigerant tor Change Pipe Length gmb h f Compressor Condenser is blocked Change refrigerant Outdoor fan is locked Change Main PCB 2 56 LGE Internal Use Only Trouble Shooting
50. mining the date when the disinfection mode is running 01 for Sunday 02 for Monday and 07 for Saturday Value 3 of Function Code 26 Determining the time when the disinfection mode is running 00 for 0 00am 01 for 01 00am 22 for 10 00pm and 23 for 11 00pm Value 1 of Function Code 27 Target temperature of disinfection mode Value 2 of Function Code 27 Duration of disinfection mode Water temperature Temperature profile Inside sanitary water tank of Disinfection operation Value 1 of Function Code 27 Value Z2 of Function Code 27 Value 2 of Time Function Code 26 A WARNING Values of Function Code 26 If Value 1 of Function Code 26 is set as 00 that is disable disinfection mode Value 2 and Value 3 is not used When Value 1 is set as 01 that is enable disinfection mode Value 2 is displayed at the position of Value 1 and Value 73 is displayed at the position of Value 2 It is due to limited width of the control panel display A CAUTION Sanitary water heating should be enable If sanitary water heating is disable the disinfection mode will not 1 Press repeatedly View ea Button to enable sanitary tank heating be operated although Value 1 of Code 26 is set as 01 ee Fa To use disinfection mode sanitary water heating should be enable ra J lt Sanitary Water Heating Disable gt OPERATION
51. n switches on or off There is risk of explosion or fire Make sure to check that the power cable plug is not dirty loose or broken and then only insert the plug completely Dirty loose or broken power plug can cause electric shock or fire Be sure to use only those parts which are listed in the svc parts list Never attempt to modify the equipment The use of inappropriate parts can cause an electrical shock exces sive heat generation or fire If strange sounds smell or smoke comes from product Immediately turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire When the product is not to be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation Do not place ANYTHING on the power cable There is risk of fire or electric shock Special warning about no opera tion for long time If the product is not used for long time we strongly recommend not to switch off the power supply to the product If power is not supplied some spe cial product protecting actions such as water pump anti locking will not performed LGE Internal Use Only Safety Precautions The refrigerant of this product is R410A The installation tool such as manifold gauge should be complied with R410A 44CAUTION Two or more people must lift and transport the
52. n while system met Trouble e Objective of introducing Trouble Not like airconditioning product Air to Water heat pump is generally operating in whole winter season without any system stopping If system found some problem which is not critical to system operating for yielding heating energy the system can temporarily continue operating in emergency mode with enduser s decision Classified trouble Trouble is classified two levels according to the seriousness of the problem Slight trouble and heavy trouble Slight trouble In most case this trouble is concerned with sensor problems The outdoor unit is operating under emergency mode operation condition which is configured by DIP switch No 4 of the Main PCB Assembly 1 Heavy trouble As the outdoor unit has problem the emergency mode operation is performed by electric heater Option trouble a problem is found for option operation such as water tank heating In this trouble the troubled option is assumed as if it is not installed at the system Emergency operation is not automatically restarted after main electricity power is reset In normal condition the product operating information is restored and automatically restarted after main electric ity power is reset But in emergency operation automatic re start is prohibited to protect the product Therefore user must restart the product after power reset when emergency operation has been runnin
53. nd find including power connection CN REMO connector at the PCB If the connector is all right But when the is empty or nothing is connected please connect it power button in front of the with end of wire which is from control panel then control panel is pushed it restart the system does not bright Check if external controller is connected like ther mostat If thermostat is connected to the system and it is configured exactly you can see Thermostat Icon Gy at the display of the con trol panel It is normal condition that power button of control panel does not work when thermostat is installed 2 Some icons are dis Although nobody touched It is normal condition Basically two features can be operated without user s decision one is sys tem protective operation the other is background water tank heating operation which is heating inside the water tank while space heating is not used or the system is not working System protec tive operation is as letter says for the purpose of securing the system from worse condition Anti freezing operation for example is one of the pro tective operation It is essential to start protective operation to prevent potential malfunction and to keep possible accidents On the other hand back ground water tank heating operation is not protec tive operation but to supply warm water to end user The background water tank heating operation is only started when the water tank temp
54. ontroller control panel Deluxe wired remote controller Simple wired remote controller Wired remote controller for hotel use Wireless remote controller simple Wireless LCD remote control CAC network function General central controller Non LGAP Dry contact PQDSA Network Soluation LGAP PDI power distribution indicator PI 485 PMNFP14A0 PMNFP14A0 Special function kit Zone control CTIE Electro thermostat Low ambient operation Others Remote room temperature sensor TH8 PQRSTAO PQRSTAO PQRSTAO Thermistor AWHP Water Pump ON OFF Control Flow Switch Control ojo OOo OOo Thermostat Interface 230 V AC Thermostat Interface 24 V AC Sanitary Tank Heating PHEX Anti Freezing Control Water Pump Forced Operation Autosetting according to Ambient Temperature Silent Operation Anti overheating of Water Pipe Emergency Operation Screed drying O OI OO OJOO OOO O OI OO OI OO OOO O OI OO OI O OU OOO Notes O Applied X Not applied No relation Accessory Installed at field ordered and purchased separately by the corresponding model name supplied with separate package Copyright 2013 LG Electronics Inc All right reserved 14 Only for training and service purposes LGE Internal Use Only Category Function AHBW036H0 Ins
55. plugged for all sensors 1 TORENT n WAELE Senar Refer resistance temperature table to 19 Problem in Water interlim sensor check in different temperature E Error diagnosis and countermeasure flow chart Is sensor proper No CIEL pt Connect properly to PCB Yes Is the resistance valu ib eise dips Change the sensor of sensor normal Yes Change the PCB Unplugged Plugged 10 kO 2 5VDC le z Lo Check the resistance Check the voltage Copyright 2013 LG Electronics Inc All right reserved 49 Only for training and service purposes pan one teeny Trouble Shooting Guide p A e Description Cause Normal Condition Incorrect connection Wi between ire connection between contro pane 03 Bad communication between control panel sensor and and main PCB 1 should be tight and indoor uni PCB PCB fault Output voltage of PCB should be 12 V DC Sensor fault E Error diagnosis and countermeasure flow chart No Unit Replace the control panel 12V S GND RD YL BK Does the error occur again when the control panel is replaced Does the error occur again when the cable between control panel and PCB is replaced Replace main PCB 1 No Check if the wire is connected tightly and also check wire itself Check the Voltage Afte
56. product Avoid personal injury Keep level even when installing the product To avoid vibration or noise Do not use the product for spe cial purposes such as preserv ing foods works of art etc It is a customer s product not a preci sion refrigeration system There is risk of damage or loss of property Do not step on or put anyting on the product outdoor units There is risk of personal injury and failure of product If the refrigerant gas leaks dur ing the repair do not touch the leakaing refrigerant gas The refrigernat gas can cause frostbite cold burn Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Do not install the product where the noise or hot air from the out door unit could damage or dis turb the neighborhoods It may cause a problem for your neighbors and hence dispute Do not block the inlet or outlet of air flow It may cause product failure Do not insert hands or other objects through the air inlet or out let while the product is operating There are sharp and moving parts that could cause personal injury Do not mix air or gas other than the specified refrigerant used in the system If air enters the refrigerant system an excessively high pressure result
57. r replacing the control panel or main PCB 1 it is very important to perform parameter setting by entering A Installer Setting Mode at the control panel If not system will NOT be operated correctly It is STRONGLY recommended to keep above instruction Copyright 2013 LG Electronics Inc All right reserved 50 Only for training and service purposes poe Mona teeny Trouble Shooting Guide Code No Description Cause Normal Condition TN The connector for transmission is dis 05 Bad communication connected between main PCB Th l 1 and main PCB 2 e connecting wires are miscon nected Wire connection between control panel Ca in PCB 1 shoul tight 53 The communication line is broken ang meines shouldbe tig Outdoor PCB is abnormal Indoor PCB is abnormal Error diagnosis and countermeasure flow chart Replace main PCB 1 Reconnect transmission cable between main PCB 1 and control panel Replace main PCB 2 after checking Replace TRANS after checking Control panel displays CH05 Check the main power supply at the unit terminal block Is main PCB 2 LED blinking Check the insulation of inverter Check the capacity of main circuit breaker and replace if required Improper connection of power supply cable If all ok F Turn on main circuit breaker Main power supply problem Re connect transmission cable Main PCB 2 fault R
58. r transmission cable is not 52 between Inverter PCB gt unit of Master unit can t connected Main PCB 2 receive signal from 2 Defect of Main fuse Noise Filter inverter controller 3 Defect of Main inverter PCB E Error diagnosis and countermeasure flow chart Is noise filter or fuse normal Yes Replace inverter PCB Re connect transmission cable Is transmission LED Yellow of inverter compressor PCB on Yes Is transmission cable connected correctly Yes Is main PCB 2 normal Yes Replace inverter PCB Replace noise filter or fuse Replace MAIN PCB 2 Check point Check the transmission connector and LED Main amp Inverter Inverter PCB gt MAIN PCB 2 Copyright 2013 LG Electronics Inc All right reserved 68 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide abad Title Cause of error Check point amp Normal condition Condenser condenser pipe Check the load condition 61 pipe sensor sensor detected high Check the sensor of Condenser pipe sensor temp high temp 65 C Normal resistor 5 KQ at 25 C Unplugged Normal voltage 2 5 V DC at 25 C Plugged Heat sink sensor heat sink sensor Check the load condition 62 temp high detected high temp Check the sensor of heat sink 85 C Normal resistor 10 kO at 25 C Unplugged Normal voltage 2 5 V DC at 25
59. raining and service purposes LGE Internal Use Only Features Temperature control parameter setting and etc Function Code 21 Setting electric heater on off temperature Using Half capacity of electric heater when DIP switch No 6 and 7 is set as OFF ON Value 1 outdoor air temperature where half capacity of electric heater starts operation Value 2 not used Example If Value 1 is set as 1 and DIP switch No 6 and 7 is set as OFF ON then half capacity of electric heater will start operation when outdoor air temperature is below 1 C and current leaving water temperature or room air temperature is much belower than target leaving water temperature or target room air temperature Using Full capacity of electric heater when DIP switch No 6 and 7 is set as OFF OFF Value 1 base outdoor air temperature Value 2 not used Example If Value 1 is set as 1 and DIP switch No 6 and 7 is set as OFF OFF then full capacity of electric heater will start operation when outdoor air temperature is below 1 C and current leaving water temperature or room air temperature is much belower than target leaving water temperature or target room air temperature A WARNING FCU Installation If FCU is used related 2way valve should be installed and connected to the unit PCB If Value 2 is set as 00 but FCU or 2way valve is NOT installed the product can be operated abnormally Copyright
60. rcuit the flow switch detects as if water is flowing It is due to electrically closed or short of flow switch or the contact of flow switch is mechanically stuck Contact official After Service Center and replace the flow switch Check the air vent If there is air in the unit it can display CH14 Please remove the air by using the air vent Check if water inside water circuit is fully charged Pressure gauge at the unit should indicate 150 200 kPa Also as the hand of the pressure gauge is not react so fast according to water charging check the pressure gauge again Otherwise there can be water leakage inside water circuit Examine if water circuit is completely sealed Although water is well flowing the flow switch can not detect water flow It is due to electrically e open of flow switch or the contact of flow switch is mechanically broken Contact official After Service Center and replace the flow switch e Read Checking Key Components of Unit Water Pump carefully to get more detail information Contact official After Service Center and replace the water pump Also check the water quality if there are particles that can yield locking at the shaft of the water pump Check the air vent If there is air in the unit it can display CH14 Please remove the air by using the air vent o Copyright 2013 LG Electronics Inc All right reserved 37 Only for training and service purposes Ea Monte Only
61. reless remote controller simple Wireless LCD remote control CAC network function General central controller Non LGAP Dry contact PQDSA Network Soluation LGAP PDI power distribution indicator PI 485 PMNFP14A0 PMNFP14A0 PMNFP14A0 Special function kit Zone control CTIE Electro thermostat Low ambient operation Others Remote room temperature sensor TH8 PQRSTAO PQRSTAO PQRSTAO Thermistor AWHP Water Pump ON OFF Control Flow Switch Control OOo ojo ojo Thermostat Interface 230 V AC Thermostat Interface 24 V AC Sanitary Tank Heating PHEX Anti Freezing Control Water Pump Forced Operation Autosetting according to Ambient Temperature Silent Operation Anti overheating of Water Pipe Emergency Operation Screed drying O 2 O Q O O Q O Q O O 2 O Q O O Q O Q O O 2 O Q O O Q O Q O Notes O Applied X Not applied No relation Accessory Installed at field ordered and purchased separately by the corresponding model name supplied with separate package Copyright 2013 LG Electronics Inc All right reserved 12 Only for training and service purposes LGE Internal Use Only Features Category Function AHBW126A0 AHBW146A0 AHBW166A0 Installation Drain pump E S P control Indoor Box High ceiling operation
62. rwise there can be water leakage inside water circuit Examine if water circuit is completely sealed Although water is well flowing the flow switch can not detect water flow It is due to electrically open of flow Switch or the contact of flow switch is mechanically broken Contact official After Service Center and replace the flow switch Read Checking Key Components of unit Water Pump carefully to get more detail information Contact official After Service Center and replace the water pump Also check the water quality if there are particles that can yield locking at the shaft of the water pump Check the air vent If there is air in the unit it can display CH14 Please remove the air by using the air vent GEC CRC Copyright 2013 LG Electronics Inc All right reserved 53 Only for training and service purposes a Only Trouble Shooting Guide Code NG Description Cause Normal Condition 15 Water pipe overheated Abnormal operation of If there is no problem in electric heater electric heater control possible maximum leaving Leaving water temperature Water temperatures Ge SER is above 67 C END it is normal condition Leaving water temperature is higher than target water temperature This is unexpected case Turn off the system and call service center If the system is not turned off before it yields error code CH15 very hot leaving
63. s causing equipment damage or injury Install the drain hose to ensure that the condensed water is drained away properly A bad connection may cause water leakage Always check for gas refriger ant leakage after installation or repair of product Low refrigerant levels may cause failure of product Use a soft cloth to clean Do not use harsh detergents solvents or splashing water etc There is risk of fire electric shock or damage to the plastic parts of the product Be cautious when unpacking and installing the product Sharp edges could cause injury If the refrigerant gas leaks during the installation ventilate the area immediately Otherwise it can be harmfull for your health LGE Internal Use Only Safety Precautions Dismantling the unit treatment of the refrigerant oil and eventual parts should be done in accor dance with local and national standards If the liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote if the batter ies have leaked e The chemicals in batteries could cause burns or other health haz ards Use a firm stool or ladder when cleaning maintaining or repair ing the product at an height Be careful and avoid personal injury Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is ris
64. ssor stops andsame Check IPM may fail 2 If output voltage of the inverter is stable Check coil resistor and insula tion resistor If normal restart the unit If same symptom occurs replace the compres sor Insulation resistor 2 MO or more Coil resistor at 25 C Inverter NPT525DAA U V 1 183 U W 1 174 V W 1 181 3 If output voltage of the inverter is unstable or it is O V When incapable of using a digi tal tester Check the IPM If the IPM is normal replace the inverter board Check coil resistor and insula tion resistor Cautions when measuring voltage and current of inverter power circuit Measuring values may be different depending on measuring tools and measuring circuits since voltage current in the power supply or output side of the inverter has no same waveform Especially output voltage changes when output voltage of the inverter has a pattern of pulse wave In addition measuring values appear largely different depending on measuring tools Note 1 If using a portable tester when checking the output voltage of the inverter is constant when comparing relative voltage between lines always use an analog tester Especially exercise particular caution if the output frequen cy of the inverter is low when using a movable tester where change of measured voltage values is large between other lines when virtually same values appear actually or where
65. ssure of discharge pipe Is it normal No Re vaccuming system and Re charging Change main PCB 2 Copyright 2013 LG Electronics Inc All right reserved 60 Only for training and service purposes LGE Internal Use Only Trouble Shooting Guide Displ Hk Title Cause of error Check point 4 Normal condition Check the connection of comp wire U V W DC Compressor Ke 26 aa Compressor e Malfunction of compressor position detect error Check the component of IPM detection parts 97 PSC Fault Over current at Check the component of IGBT PFC module PFC Fault IGBT PFC module Check the components Check Flow Chart Check the wire connection U V W Is it normal Check the resistance of comp No difference at each terminal Is it normal Check the electricity leakageof the compressor Refer to comp check table Is it normal No Change Yes Compressor No Correct connection No Change Compressor Check the input power Outdoor unit Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes Is it normal 1 6 230 V 10 3 0 400 V 10 No Needs electric work Yes Check DC link capacitor Is it normal No Refer to belows Change DC link capacitor or Main PCB Check Over load condition Overcharging of refrigerant Pipe Length Condenser is blocked Ou
66. tallation Drain pump E S P control Indoor Box High ceiling operation Reliability Hot start Self diagnosis Soft dry operation Defrost Deicing High pressure switch Low pressure switch Phase protection Restart delay 3 minutes Self diagnosis Soft start Test function Convenience Auto changeover Auto cleaning Auto operation artificial intelligence Auto restart operation O O Ol O OO lOO Child lock Forced operation Group control Sleep mode Timer on off O Timer weekly O Two thermistor control Individual control Standard wired remote controller control panel O Deluxe wired remote controller 7 Simple wired remote controller Wired remote controller for hotel use Wireless remote controller simple Wireless LCD remote control CAC network function General central controller Non LGAP Dry contact PQDSA O Network Soluation LGAP O PDI power distribution indicator PI 485 PMNFP14A0 Special function kit Zone control CTIE Electro thermostat Low ambient operation Others Remote room temperature sensor TH8 PQRSTAO Thermistor AWHP Water Pump ON OFF Control Flow Switch Control Thermostat Interface 230 V AC Thermostat Interface 24 V AC Sanitary Tank Heating PHEX Anti Freezing Control Water Pump Forced Operation Autosetting according to Ambient Temperature Silent Operation Anti overheat
67. tate motor will not operate smoothly and start vibrat ing EEV valve operation At power ON open angle signal of 1400 pulses out put and valve position is set to 8 Valve If valve operates smoothly no noise and vibration open occur and if valve is closed noise occurs Angle Noise from EEV can be confirmed by touching the i EEV surface with a screw driver and listening the Full open EEV noise 1350 pulses wo If liquid refrigerant is in EEV the noise is lower pulse Copyright 2013 LG Electronics Inc All right reserved 43 Only for training and service purposes LGE Internal Use Only Checking Key Components of Unit EEV coil and body Outdoor unit Coil part Body Lead wire Remove and assemble the coil Remove Assemble Grip the A part tightly and pull up coil part upward When the coil part is removed or assembled be careful not to bend the pipe of the body NC re A part 4 Copyright 2013 LG Electronics Inc All right reserved 44 Only for training and service purposes LGE Internal Use Only Checking Key Components of Unit EEV failure check method Failure mode Diagnosis Repair process Remark Microcomputer 1 Disconn
68. tdoor fan is locked Is it normal No Remove obstruction Change outdoor fan or motor Change refrigerant Yes Change Main PCB 61 LGE Internal Use Only Trouble Shooting Guide Display code Title Cause of error Check point amp Normal condition 29 Inverter compressor over current Inverter compressor input current is over 24A 1 Overload operation Pipe clogging Covering EEV defect Ref overcharge 2 Compressor damage Insulation damage Motor damage 3 Input voltage low 4 Inverter PCB assembly damage Check Flow Chart Is installation condition normal Yes Are the resistance between each phase and insulation resistance of Inverter compressor normal Is compressor wire connection condition normal Is input voltage normal Is inverter PCB assembly normal 1 Check Pipe clogging distortion 2 Check Covering 3 Check EEV connector assemble condition normal operation 4 Check refrigerant pressure Reassemble or manage if abnormality found 1 Check resistance between each terminal of compressor 0 188 7 2 Check insulation resistance between compressor terminal and pipe over 50 MQ Replace compressor if abnormality found 1 Check inverter PCB assembly U V W connector connection condition 2 Check wire disconnection and wiring 3 Check compressor terminal connection condition bad contact
69. tems as specified in above 1 through 4 Carefully check both connector and grounding wires when replacing the circuit board 1 Replace only fan control boards If starting is done it means that the fan control board has defect 2 Replace both fan control board and the main board If starting is done it means that the main board has defect 3 If problems continue to occur even after counter measure of No 1 and No 2 it means that both boards has defect Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes d LGE Internal Use Only Checking Key Components of Unit 1 7 Electronic Expansion O DC 12V Driving circuit EEV CN i ae 95 Red c5 m a 04 White X 4 o4 2 03 Yellow pin 3 i 3 4 T am wS 92 Orange 5 2 i 92 LE o1 Blue O b ol Pulse signal output value and valve operation Output state Output No 1 2 3 4 5 6 7 8 o1 ON OFF OFF OFF OFF OFF ON ON 02 ON ON ON OFF OFF OFF OFF OFF 03 OFF OFF ON ON ON OFF OFF OFF 04 OFF OFF OFF OFF ON ON ON OFF Output pulse sequence In valve close state 1 25354555 6 57581 In valve open state 8 gt 7 gt 6 gt 5 gt 4 gt 3 gt 2 gt 1 gt 8 1 If EEV open angle does not change all of output phase will be OFF 2 If output phase is different or continuously in the ON s
70. there is danger to determine that fail ure of the inverter occurred 2 You can use rectification voltmeter if using commercial frequency tester when measuring output values of the inverter when measuring absolute values Accurate measuring values cannot be obtained with a general portaable tester For analog and digital mode Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes 41 LGE Internal Use Only Checking Key Components of Unit 1 6 Fan Motor Checking Item Symptom Countermeasure 1 The fan motor does not operate Does failure appears again when starting operation 2 Vibration of the fan motor is large 1 When power supply is abnormal Modify connection status in front of or at the rear of the breaker or if the power terminal console is at frosting condition Modify the power supply voltage is beyond speci fied scope 2 For wrong wiring For following wiring 1 Check connection status 2 Check contact of the connector 3 Check that parts are firmly secured by tightening Screws 4 Check connection of polarity 5 Check short circuit and grounding 3 For failure of motor Measure winding resistance of the motor coils 4 For failure of circuit board Replace the circuit board in following procedures if problems occur again when powering on and if there are no matters equivalent to i
71. time set by the timer the pause continues 2 4 Weekly Program If necessary an operator can make an On Off reservation of the product for a period of one week On Off schedule of operation for a period of one week No need to turn the unit On Off manually during working days On Off time is scheduled in micom of the wired remote control Operation Time Table Example Setting Mon Tue Wed Thu Fri Sat Sun Temp 25 C 25 C 25 C 25 C 25 C On 09 00 08 00 09 00 08 00 09 00 Off Off 12 00 17 00 12 00 12 00 12 00 2 5 Sanitary Tank Heating Scheduler amp Sanitary Tank Heater Scheduler If necessary enable or disable of sanitary tank heating or sanitary tank heater can be programmed according to user s specific time Schedulers are operating everyday 2 6 Silent mode operation If necessary enable or disable of silent mode can be programmed according to user s specific time 2 7 Screed drying If necessary enable or disable of screed drying can be programmed according to user s setting While the screed drying mode is operating Dry is displayed Copyright 2013 LG Electronics Inc All right reserved 19 Only for training and service purposes poe Mion Pen Features 3 System Set up As THERMAW is designed to satisfy various installation environment it is important to set up system correctly If not configured
72. unit is used charge refrigerant Only for training and service purposes 41 Sapa f Vip TITA 717 WAN s When inserting the sound proof be sure to insert counter clockwise Figure 2 Discharge pipe Suction pipe LGE Internal Use Only Replacement Procedure for INV PCB K 2 Replacement Procedure for INV PCB 1 Disassemble panel assembly by unscrewing 4 screws Figure 1 2 Replace INV PCB assembly Figure 2 When assemble INV PCB assembly with control case make sure that PCB case is inserted surely in the slit of control case 3 Assemble panel assembly and main PCB 9 i e o i V c z zA oV Figure 3 Figure 4 Ah caution Be sure that INV PCB assembly is firmly assembled with control case Confirm that there is no gap between INV PCB case and control case Figure 4 If any gap is present it will cause product malfunction Copyright 2013 LG Electronics Inc All right reserved 32 LGE Internal Use Only Only for training and service purposes Caution for Assembling Outdoor Panels after Test Run

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