LG LP1415GXR Page 32 Service Manual Download | Manualshive

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Display PCB

8-2 PCB picture

Connect the
Transformer
output

Main PCB

Connect the water
pump motor

Connect the
transformer input

Connect the
Display PCB

Connect the
Temp sensor

Connect the
down pump

Connect the
Lever switch

Connect the
4-way valve

Connect the
Down motor

Connect the
up motor

8. CIRCUIT DIAGRAM

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Summary of Contents for LP1415GXR

Page 1: ...ortable Air Conditioner SERVICE MANUAL LG MODEL LP1415GXR CAUTION website http www lgappliances com BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL ...

Page 2: ...stallation Location 4 1 Preparing for Installation 8 9 7 DISASSEMBLELY 9 3 TROUBLESHOOTING WITH ERROR 34 9 4 TROUBLESHOOTING ELSE 6 3 10 COMPONENT TESTING IMFORMATION 42 10 1 Transformer 42 10 2 Up motor 43 10 3 Down motorr 44 10 4 Water pump 45 10 5 Temp sensor 46 10 6 Lever switch 48 10 7 Pressure switch 49 5 CARE AND CLEANING 13 5 1 Cleaning the case 13 5 2 Cleaning the air filter 13 5 3 Emptyi...

Page 3: ...pe Standard Auto Swing Yes Energy saver switch Yes Auto Restart Yes Auto Door Open Close System Yes Timer 24Hr On Off Fan Speed Cooling 3 Fan Only 3 Compressor Rotary Indoor Outdoor Fan Type Blower Type Air Discharge Inclinded and Top Water Full Indicator Yes check Outdoor Vent Exhaust Exhaust Only 1 5M Power Cord Chassis Type Fixed Panel Color Gray Easy Roll Casters Yes Air Filter Washable Window...

Page 4: ...Only for training and service purposes LGE Internal Use Only Top panel Signal receiver Front panel wheel Escutcheon Swing panel Remote Evaporator filter grille Outlet grille Condenser filtergrille Powder holder Drain cover Electric pump assemblely 3 FEATURES ...

Page 5: ...service purposes LGE Internal Use Only Air outlet Upper motor bracket up Upper motor Upper motor bracket down lower air channel up lower air channel down Base pan Swing fan motor evaporator Drain pan Condenser C box cover Electric pump Compressor Pressure Switch C Box 3 FEATURES ...

Page 6: ...t includes 1 Window Vent Panel and 3 Extension Panels Flexible Venting Hose 2 Type A Foam Seals Adhesive Diffuser Security Bracket 1 Type B Foam Seal Non adhesive 2 Type C Foam Seals Adhesive type Shorter 616 PM IQZ KWVLQ QWVMZ Q PMI a M _W WZ UWZM XMWXTM W TQN IVL QV ITT PM VQ IQT ZM W LW W KW TL ZM T QV JIKS QVR Za WZ W PMZ QVR ZQM 1 Window Vent Panel Panel A 18 3 Extension Panels Panel C 17 Pan...

Page 7: ...LLATION LOCATION Place the unit on a level floor For best performance allow at least 20 in of air space on all sides of the unit for good air circulation 1 2 20 in 20 in Place the unit near a window The hose and diffuser will be used to connect the air conditioner to the window installation kit to vent exhaust air outside 3 4 INSTALLATION ...

Page 8: ... w o d n i w r o F window vent panel and two extension panels Panel C and Panel D Panel A Panel A 18 18 Panel A 19 26 19 26 Panel B Panel A Fig a Fig b 27 34 Fig c Fig d 3 o t 7 2 m o r f s g n i n e p o w o d n i w r o F 4 A B C D 18 9 17 17 18 Ĝ a 19 26 Ĝ Ĝ b Ĝ Ĝ c Ĝ d Fig Panel Window Length Ĝ Ĝ 1 Please check your window length and choose the fit panels from the above tabel 2 If your window le...

Page 9: ...ach it to the window sash and frame 2 Insert the vent panel assembly including extension panels if needed into the window opening Extend the extension panels if used Foam seal B Non adhesive type 3 Cut the foam seal B Non adhesive type to the window width Stuff the foam seal B between the glass and the window to prevent air and insects from getting into the room 4 Install the security bracket with...

Page 10: ...rvice purposes LGE Internal Use Only 5 Insert the diffuser into the Vent Panel And then slide If you want fix the diffuser more firmly use the type C screw Small gap First Insert Second Slide First insert to the vent panel fully and then slide for locking Type C screw 4 INSTALLATION ...

Page 11: ...vent panel assembly including extension panels if needed into the window opening Extend the extension panels if used Foam seal B Non adhesive type 3 Cut the foam seal B Non adhesive type to the window height Stuff the foam seal B between the glass and the window to prevent air and insects from getting into the room Vent Panel NOTE The window installation kit can be used with casement windows betwe...

Page 12: ...rvice purposes LGE Internal Use Only 5 Insert the diffuser into the Vent Panel And then slide If you want fix the diffuser more firmly use the type C screw Small gap First Insert Second Slide First insert to the vent panel fully and then slide for locking Type C screw 4 INSTALLATION ...

Page 13: ...ilter should be cleaned every two weeks depending on indoor air quality more frequent cleaning may be needed A dirty air filter will decrease airflow and reduce efficiency Do not operate the air conditioner without the air filter in place Grasp the grip which is in the center and on the top of the filter and pull out the filter directly 1 Use a vacuum cleaner to clean the filter If the filter is h...

Page 14: ...8oz Remove the water plug firstly on the back of the product Push Here before Rotation Press TIMER and DOWN buttons simultaneously to activate drain pump inside of product This pump will be activated during 3 minutes If you want to stop draining before 3 minutes you can press TIMER and DOWN buttons simultaneously again Pull out drain pipe from the product Reassemble the drainage cover will appear ...

Page 15: ...d the drain cap making sure it is on securely Place the air conditioner in the desired location reconnect the exhaust hose and plug in the air conditioner When need running in high humidity or during the DRY mode remove the drain cap and the exhaust from the back of the unit NOTES When turned on after being unplugged the air conditioner will automatically reset to COOL mode with a temperature sett...

Page 16: ...n speed or the selected TIMER delay B PART shows the active mode COOL FAN DRY ENERGY SAVER and HEAT Auto clean Water full and Timer TEMP TIMER Use these buttons to adjust the set temperature up or down or to adjust the timer delay time TIMER Allows you to set a delay from 1 to 24 hours that will turn the air conditioner on or off automatically 5 1 4 9 2 7 6 3 8 Operation of functions is the same w...

Page 17: ...ght or if there is not a clear path between the remote and the sensor Press the MODE button to select the operating mode COOL FAN DRY ENERGY SAVER for the air conditioner And you can see the active mode through the LED Display The default setting is COOL Press the MODE button to change to FAN press again to change to DRY again to change to ENERGY SAVER and again to return to COOL MODE USING THE CO...

Page 18: ...u can set the air conditioner to either automatically turn OFF or turn ON after a delay of up to 24 hours The display will show 0 Use the buttons to adjust the delay time from 1 to 24 hours in one hour increments To set an automatic off delay press the TIMER button while the air conditioner is running and use the buttons to adjust the delay time The air conditioner will automatically turn OFF afte...

Page 19: ...it is not available from the control panel It must be set each time you wish to run the AUTO CLEAN function AUTO CLEAN is used to remove moisture from the heat exchange coils This helps prevent the formation of mildew and odors AUTO CLEAN will be displayed in the LED diplay Press the POWER button to turn the air conditioner off AUTO CLEAN will run the circulation and exhaust fans with the compress...

Page 20: ...UTION Fig1 1 Fig1 2 Fig1 4 Fig1 5 Fig1 6 Fig1 3 Fig1 1 1 Remove the 2 back inlet with the filter Fig1 1 1 2 Screw the16 screws in back panel Fig1 2 1 3 Rise up the top panel and ligtly put it on the machine for it connecting the display PCB Fig1 3 1 4 Remove the screw fixed of base pan and front panel Fig1 4 1 5 Remove the 4 side screw Fig1 5 1 6 Remove the front panel and rear panel Fig1 6 1 Top ...

Page 21: ... 4 screws fixing the display PCB Fig 2 1 2 2 Remove the display PCB from display panel Fig 2 2 2 3 Remove the 2 intermials of singal receiver and swing fan motor Fig 2 3 2 4 Remove the singal receiver Fig 2 4 2 5 Remove the 2 screw fixing the swing fan motor Fig 2 5 2 6 Remove the swing fan motor Fig 2 6 2 7 remove the inlet and swing leaf Fig 2 7 2 Top panel components Fig 2 7 DISASSEMBLELY ...

Page 22: ...ew in picure and twist the clips Then remove the c box cover Fig 3 1 3 2 Pull out the display PCB from C box Fig 3 2 3 3 Remove the senor Fig 3 3 3 4 Remove the intermials of upper fan motor Fig 3 4 3 5 Remove the motor ground wire screw from c box Fig 3 5 3 6 Remove the 6 screw fixing the upper air channel Fig 3 6 3 7 Remove the upper air channel Fig 3 7 3 Unpper air channel Fig 3 7 DISASSEMBLELY...

Page 23: ...Fig 4 1 4 2 Remove the fan nut and gasket Fig 4 2 4 3 Separate the fan and lower foam Fig 3 3 4 4 Remove the gasket between the fan and motor Fig 4 4 4 5 Remove the motor and motor bracket from lower foam Fig 4 5 4 6 Remove the 2 screw of the motor bracket Fig 4 6 4 7 Remove the 4 screws and remove the motor Fig 4 7 Fig 4 1 Fig 4 2 Fig 4 3 4 Upper channel components Fig 4 7 DISASSEMBLELY ...

Page 24: ...2 remove the 4 screws fixing the upper water pump in the lower air channel Fig 5 2 5 3 remove the intermials of upper water pump then remove the connecting pipes Fig 5 3 5 4 remove the 2 screw of the water discharging valve Fig 5 4 5 5 remove the electric pump Fig 5 5 5 6 remove the interminals of the lower channel motor Fig 5 6 5 7 remove the ground wires Fig 5 7 5 8 remove the 2 screws fixed of ...

Page 25: ... components Fig 6 6 1 Remove the 5 screws fixing the lower air channel Fig 6 1 6 2 Remove the fan cover Fig 6 2 6 3 Remove the low air channel outlet grille Fig 6 3 6 4 Separate the fan and motor Fig 6 4 6 5 Remove the 4 motor screws fix the motor Fig 6 5 6 6 Remove the motor Fig 6 6 Fig 6 2 Fig 6 3 Fig 6 4 Fig 6 5 Fig 6 6 Fig 6 7 DISASSEMBLELY ...

Page 26: ... fixed of the box and base pan Fig 7 1 7 2 Remove the box Fig 7 2 7 3 Remove the interminals ground wire screw and two clip screws of power cord Fig 7 3 7 4 Remove the interminals of pressure switch and the water fan motor Fig 7 4 7 5 Remove the 8 screws in c box Fig 7 5 7 6 Remove the main PCB fan capacitor motor capacitor transformer Fig 7 6 Fig 7 4 Fig 7 Fig 7 5 Fig 7 6 7 DISASSEMBLELY ...

Page 27: ...c All right reserved Only for training and service purposes LGE Internal Use Only Fig 8 Fig 8 1 Fig 8 2 8 Lever switch Fig 8 8 1 remove the Lever switch interminals Fig 8 1 8 2 remove the screw and then the floater Fig 8 2 7 DISASSEMBLELY ...

Page 28: ... remove the two crews connecting the exchanger and the base pan Fig 9 1 9 2 remove the 3 nut of the compressor Fig 9 2 9 3 Remove the 3 screws fixed compressor with wrench then get out the 3 compressor gasket Fig 9 3 9 4 Get up out the compressor evaporator and condenser softly Fig 9 4 9 5 remove the 3 water fan screws and put it out Fig 9 5 9 6 put the water fan motor out Fig 9 6 7 DISASSEMBLELY ...

Page 29: ... 29 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 7 DISASSEMBLELY ...

Page 30: ... 30 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 7 DISASSEMBLELY ...

Page 31: ... 31 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 8 1 Circuit diagram Display PCB Main PCB 8 CIRCUIT DIAGRAM ...

Page 32: ... Only Display PCB 8 2 PCB picture Connect the Transformer output Main PCB Connect the water pump motor Connect the transformer input Connect the Display PCB Connect the Temp sensor Connect the down pump Connect the Lever switch Connect the 4 way valve Connect the Down motor Connect the up motor 8 CIRCUIT DIAGRAM ...

Page 33: ...yright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 9 1 Safety caution 9 2 Error code summary 9 TROUBLE SHOOTINGS 8 3 Wiring diagram 8 CIRCUIT DIAGRAM ...

Page 34: ...PIVOM PM TM MZ _Q KP Yes No No Yes VXT O PM XW_MZ KWZL IVL PMV XT O Q IOIQV 1 PM 4 LQ IXXMIZML PM UIKPQVM KIV JM ML VWZUITTa Yes No 1 PM ZM Q IVKM WN PM MZUQVIT QV TM MZ _Q KP Q S ZMNMZ W Yes PIVOM PM UIQV 8 Yes 1 PM MZUQVIT KWVVMK ML W 5IQV 8 LQ KWVVMK ML WZ TWW M MKWVVMK PM MZUQVIT Yes No PIVOM PM TM MZ _Q KP No 1 PM ZM Q IVKM WN PM ZZW VLQVO MV WZœ MZUQVIT Q 3 ZMNMZ W Yes PIVOM PM UIQV 8 1 LQ X...

Page 35: ...urposes LGE Internal Use Only EVAPORATOR PIPE SENSOR ERROR Yes 1 PM MZUQVIT KWVVMK ML W 5IQV 8 LQ KWVVMK ML WZ TWW M MKWVVMK PM MZUQVIT Yes No PIVOM PM TM MZ _Q KP No 1 PM ZM Q IVKM WN PM IXWZI WZ XQXM MV WZœ MZUQVIT Q 3 ZMNMZ W Yes PIVOM PM UIQV 8 1 LQ XTIaML CH02 CH02 9 TROUBLE SHOOTINGS ...

Page 36: ...L KWVVMK QVO M MZIT MTMK ZQK LM QKM MKWVVMK WZ ZMXIQZ PM KWVVMK WZ No Yes 1 PM TIUX TQOP _PMV X P PM ZM M J WV PIVOM PM XW_MZ KWZL PMKS KWVVMK QWV KPMKS 5IQV 8 No Yes 1 PM KWVVMK WZ KWVVMK ML W 5IQV 8 Q XTIa 8 LQ KWVVMK ML WZ LQ I MUJTML Yes No PM KIJTM KWVVMK PM UIQV 8 IVL LQ XTIa 8 _MTT MKWVVMK WZ ZMXIQZ PM KWVVMK WZ No Yes PIVOM PM UIQV 8 MKWVVMK WZ ZMXIQZ PM KWVVMK WZ 9 4 TROUBLESHOOTING ELSE ...

Page 37: ... MUX ILR QVO J WV Ŕ Ģŕ No WM PM KWUXZM WZ WX Z VVQVO NWZ UQV M IJW M Yes 1N PM KWUXZM WZ R WX _IQ UQV M WZ ZM IZ Yes 1 PM KWVVMK WZ KWVVMK ML W 5IQV 8 KWUXZM WZ LQ KWVVMK ML WZ LQ I MUJTML No MKWVVMK WZ ZMXIQZ PM KWVVMK WZ ZM PM KWUXZM WZ TMIL _QZM ZQOP Ta KWVVMK ML WVVMK PM KWUXZM WZ TMIL _QZM QV PM ZQOP _Ia No Yes 1 PM KIXIKQ a IT M WN PM NIV KIXIKQ WZ N f ˁ PIVOM I KIXIKQ WZ No Yes No 1 PM KWVL...

Page 38: ...QZ PM KWVVMK WZ Yes 1 PMZM IVa PQVO JTWKS PM NIV No Yes 1 PM KWVVMK WZ KWVVMK ML W 5IQV 8 UW WZ LQ KWVVMK ML WZ LQ I MUJTML 1 PM KWVVMK WZ KWVVMK ML W UW WZ KIXIKQ WZ UW WZ LQ KWVVMK ML WZ LQ I MUJTML No PIVOM PM UW WZ No 1 PM NIV UW WZ WS ZMNMZ W Yes 1 PM KIXIKQ a IT M WN PM N IV KIXIKQ WZ N WZ N f ˁ MXTIKM PM UW WZ KIXIKQ WZ No Yes PIVOM PM UIQV 8 9 TROUBLE SHOOTINGS ...

Page 39: ... WV NWZ PIVOQVO IQZ 0QOP Yes 1 PM 01 NIV XMML No TMIV PM L a KWUXWVMV Yes 1 PM KWVLMV MZ M IXWZI WZ WZ IQZ NQT MZ KTMIV No MUW M PM WJ IKTM No 1 PMZM IVa WJ IKTM I W LWWZ VQ Yes PIZOM PM ZMN W KP O MKS O TMISIOM MTL PM 4MISIOM IVL IK U IVL ZMKPIZOM PM MN Yes 1 PM M IXWZI WZ KWWTML No REMOTE DOSE NOT OPERATE MUW M PM WJ IKTM No 1 PMZM IVa PQVO WJ IKTM JM _MMV PM ZMUW M IVL PM XW IJTM Yes PIVOM PM J...

Page 40: ...ZM WZ TMIL _QZM ZQOP Ta KWVVMK ML WVVMK PM KWUXZM WZ TMIL _QZM QV PM ZQOP _Ia No Yes LR PM KWUXZM WZ Yes 1 PM KWUXZM WZ I MUJTML MZ QKITTa No LR PM JM WZ ILL J aT WV JM No WM PM JM QJZI M QV PQOP NZMY MVKa Yes ABNORMAL NOISE AND VIRBRATION MOTOR 1 PM QVX XW_MZ MTMK PM ZQOP W TM No Yes PIVOM PM UW WZ 1 PM KZM_ NQ QVO PM UW WZ TWW M QOP MV PM KZM_ Yes No LR PM UW WZ No WM PM UW WZ QJZI M QV PQOP NZM...

Page 41: ...ABNORMAL NOISE AND VIRBRATION FAN TOUCH Yes No No Yes No Yes Yes No 1 PM KZM_ NQ QVO PM NIV TWW M No Yes 1 PMZM IVa PQVO JTWKS 6MIZ PM NIV W M PM NWIU ZIV NWZU WZ QZ KPIVVMT Yes No 1 PMZM IVa OIX JM _MMV NIV IZW VL XIZ PIVOM PM NIV QOP MV PM KZM_ MUW M PM JTWKS PIVOM PM WIU WZ IQZ KPIVVMT LR PM NIV 9 TROUBLE SHOOTINGS ...

Page 42: ...ics Inc All right reserved Only for training and service purposes LGE Internal Use Only Wring diagram Test point Result 1 2 3 4 Test points Result 1 to 2 120 300 25ć 3 to 4 1 5 5 25ć 10 1 Transformer 10 COMPONENT TESTING IMFORMATION ...

Page 43: ... Internal Use Only Wring diagram Test point Result 1 H N Test points Result N to H 30 6 f10ˁ 25ć H to 1 28 0 f10ˁ 25ć FUSE 3 15A 250 V ZNR C 0 1uf L DC12V RE LA Y UL2003 MA IN CHIP WHITE DOWN MOTOR RE LA Y B LA CK HIGH FA N YE LLOW LOW FAN C 15uf 250V N 10 2 Up motor 10 COMPONENT TESTING IMFORMATION ...

Page 44: ...l Use Only Wring diagram Test point Result 1 H N Test points Result N to H 15 6 f10ˁ 25ć H to 1 14 6 f10ˁ 25ć FUSE 3 15A 250V ZNR C 0 1uf N L DC12V RELAY UL2003 MAIN CHIP WHITE UPMOTOR RELAY B LAC K H IG H FA N YE LLOW LOW FAN C 10uf 250V B LU E MID FA N RELAY 10 3 Down motor 10 COMPONENT TESTING IMFORMATION ...

Page 45: ...or training and service purposes LGE Internal Use Only Wring diagram Test point Result P N Test points Result 1 to 2 60 f15ˁ 30ć FUSE 3 15A 250 V ZNR C 0 1uf L DC12V RELAY UL2003 MAIN CHIP B LACK PUMP MOTOR BLA CK N 10 4 Water pump 10 COMPONENT TESTING IMFORMATION ...

Page 46: ... Use Only Wring diagram Test point Result 3 2 1 4 Test points Result Remark 1 to 2 5 KΩ 25ć When it s defect display CH02 3 to 4 5 KΩ 25ć When it s defect display CH01 DC5V CONNECTOR MAIN CHIP C 2 2uf C 2 2uf R 4 99K R 4 99K PUMP SENSOR AMBIENT SENSOR O O O O 10 5 Temp sensor 10 COMPONENT TESTING IMFORMATION ...

Page 47: ... 47 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Temp sensor 10 COMPONENT TESTING IMFORMATION ...

Page 48: ...ht reserved Only for training and service purposes LGE Internal Use Only Test points Result 1 to 2 0 K Wring diagram Test point Result 1 2 DC5V CONNECTOR MAIN CHIP R 4 99K O O LevelSwitch R 4 99K 10 6 Lever switch 10 COMPONENT TESTING IMFORMATION ...

Page 49: ...t reserved Only for training and service purposes LGE Internal Use Only Test points Result 1 to 2 0 K Wring diagram Test point Result 1 2 DC5V CONNECTOR MAIN CHIP R 10K O O Press Switch R 4 99K 10 7 Pressure switch 10 COMPONENT TESTING IMFORMATION ...

Page 50: ...313 152302B 346811C 552113 137214 137210 152302A 158580 264110 422100A 422100B 567502 550140 554160 237901 267120 235512 146811 268711A 147590 238310 237203 731270A 2 Type A Screws 1 Type B Screw 1 Type C Screw 2 Type A Foam Seals Adhesive Security Bracket 1 Type B Foam Seal Non adhesive 2 Type C Foam Seals Adhesive type Shorter Window Installation Kit includes 1 Window Vent Panel and 3 Extension ...

Page 51: ...Service call Number 888 LG Canada 888 542 2623 Service call Number 1 888 865 3026 US CANADA ...

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