Download Print this page

Advertisement

Dehumidifier
SERVICE MANUAL
MODELS: DH300EY7/DH305Y7/DH300MY7/DH305T7
LD40Y7/DH400MY7
DH404EY7/DH400EY7/LD40EY7
DH504ELY7/LD50ELY7/LD50EBL/DH500MY7
LD65ELY7
CAUTION
- BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
- ONLY FOR AUTHORIZED SERVICE.
http://biz.LGservice.com

Advertisement

   Related Manuals for LG DH305Y7

   Summary of Contents for LG DH305Y7

  • Page 1

    Dehumidifier SERVICE MANUAL MODELS: DH300EY7/DH305Y7/DH300MY7/DH305T7 LD40Y7/DH400MY7 DH404EY7/DH400EY7/LD40EY7 DH504ELY7/LD50ELY7/LD50EBL/DH500MY7 LD65ELY7 CAUTION - BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. - ONLY FOR AUTHORIZED SERVICE.

  • Page 2: Table Of Contents

    CONTENTS 1. PREFACE 1.1 SAFETY PRECAUTIONS ...........................3 1.2 FEATURES AND DIMENSIONS ........................3 1.2.1 FEATURES............................3 1.2.2 DIMENSIONS ............................3 1.3 MODEL NAMES ............................4 1.4 SPECIFICATIONS ............................4 1.5 CONTROL TYPE ............................5 1.5.1 MECHANICAL TYPE.........................5 1.5.2 ELECTRONIC TYPE .........................5 1.6 HOW TO OPERATE DEHUMIDIFIER ......................6 1.6.1 HOW DOES THE DEHUMIDIFIER WORK? ..................6 1.6.2 LOCATION FOR THE DEHUMIDIFIER.....................6 1.6.3 MICRO SWITCH..........................6...

  • Page 3: Preface

    1. PREFACE This Service Manual provides various service information, including the mechanical and electrical parts. This dehumidifier was manufactured and assembled under the strict quality control procedures. The refrigerant is charged at the factory. Be sure to read the safety precaution prior to servicing the unit. 1.1 SAFETY PRECAUTIONS •...

  • Page 4: Model Names

    1.3 MODEL NAMES MODEL NAME CAPACITY (Pints/24hrs) DH305Y7, DH300MY7 DH400MY7,LD40Y7 DH500MY7 MECHANICAL TYPE DH305T7 CONTROL DH504ELY7 DH300EY7 DH404Y7 LD65ELY7 PANEL ELECTRONIC TYPE LD50ELY7 DH400EY7,LD40EY7 LD50EBLY7 1.4 SPECIFICATIONS DH504ELY7 DH400MY7, LD40Y7 LD65ELY7 DH305Y7 MODELS LD50ELY7 DH404EY7 DH300MY7 DH305T7 DH500MY7 ITEMS DH400EY7, LD40EY7...

  • Page 5: Control Type

    1.5 CONTROL TYPE 1.5.1 Mechanical type Humidity Control • When you first use the dehumidifier, turn the humidity control to 5 or 6. If you still have moisture, turn the humidity control to a higher setting. MAX is the highest setting. High •...

  • Page 6: How To Operate Dehumidifier

    1.6 HOW TO OPERATE DEHUMIDIFIER 1.6.1 HOW DOES THE DEHUMIDIFIER WORK? Motor Moist, humid air is drawn over a cold refrigerated Condenser Evaporator dehumidifying coil. Moisture in the air condenses on this coil and drains into a bucket (or through the bucket into a Humid hose and drain).

  • Page 7: Humidity Controller

    1.6.5 HUMIDITY CONTROLLER 5(42%) 42% R.H 1.6.5.1 Mechanical Type 4(50%) 6(35%) The humidity control can be set anywhere between Off and Max for normal operation. 3(60%) 7(30%) If you need more dehumidification, turn the Humidity Control toward Max. If you need less dehumidification, turn the Humidity Control toward Off.

  • Page 8: Circuit Diagram

    2. CIRCUIT DIAGRAM • MODEL : DH305Y7, DH300MY7 PART NO. Q'TY DESCRIPTION PER SET MARKS DH305Y7 DH305T7 DH300MY7 6411A20001Z POWER CORD ASSEMBLY 6600FX5001G SWITCH, ROCKER 4681A20040Q MOTOR ASSEMBLY 0CZZA20005J CAPACITOR COMPRESSOR, SET TBZ30871801 TBZ31057901 EAF35787201 6750U3L001A 6871A20289B PWB(PCB) ASSEMBLY, DISPLAY...

  • Page 9

    • MODEL : DH300EY7 PART NO. Q'TY DESCRIPTION PER SET MARKS DH300EY7 6411A20001Z POWER CORD ASSEMBLY 4681A20040Q MOTOR ASSEMBLY 0CZZA20005J CAPACITOR 2520UCBS005 COMPRESSOR, SET 6750U-L082A 6871A20600A PWB(PCB) ASSEMBLY, DISPLAY 6877A30013L SENSOR ASSEMBLY 6600A30003C SWITCH ASSEMBLY, MICRO 6871A20888A PWB(PCB) ASSEMBLY, MAIN S: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS...

  • Page 10

    • MODEL : DH400MY7/LD40Y7 PART NO. Q'TY DESCRIPTION PER SET MARKS DH400MY7/LD40Y7 6411A20001Z POWER CORD ASSEMBLY 6600FX5001G SWITCH, ROCKER 4681A20040Q MOTOR ASSEMBLY 0CZZA20005N CAPACITOR 2520UCAS003 COMPRESSOR (ROTARY), SET 6750U-L103A OLP (ASSEMBLY) 6871A20289B PWB(PCB) ASSEMBLY, DISPLAY 6877A30013L SENSOR ASSEMBLY 6601A30006A SWITCH ASSEMBLY, ROTARY 6600A30003C SWITCH ASSEMBLY, MICRO 6871A10142A...

  • Page 11

    • MODEL : DH404EY7/DH400EY7/LD40EY7 PART NO. Q'TY DESCRIPTION DH404EY7/DH400EY7 PER SET MARKS LD40EY7 6411A20001Z POWER CORD ASSEMBLY 4681A20040Q MOTOR ASSEMBLY 0CZZA20005N CAPACITOR TBZ30871801 COMPRESSOR,SET EAF35787201 6871A20600A PWB(PCB) ASSEMBLY,DISPLAY 6877A30013L SENSOR ASSEMBLY 6600A30003C SWITCH ASSEMBLY,MICRO 6871A20888A PWB(PCB) ASSEMBLY,MAIN S: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS —11—...

  • Page 12

    • MODEL : DH500MY7 PART NO. Q'TY DESCRIPTION PER SET MARKS DH500MY7 6411A20001Z POWER CORD ASSEMBLY 6600FX5001G SWITCH, ROCKER 4681A20040J MOTOR ASSEMBLY 0CZZA20005J CAPACITOR 2520UCBA010 COMPRESSOR (ROTARY), SET 6750U3L001A OLP (ASSEMBLY) 6871A20289B PWB(PCB) ASSEMBLY, DISPLAY 6877A30013L SENSOR ASSEMBLY 6601A30006A SWITCH ASSEMBLY, ROTARY 6600A30003C SWITCH ASSEMBLY, MICRO 6871A10142A...

  • Page 13

    • MODEL : DH504ELY7 WIRING WIRING DIA GRAM DIA GRAM MAIN PCB CN-FAN BK(HI) RD(LOW) MOTOR OR(COM) GN/YL CN-AC1 WH(BL) (N) BUCKET CN-AC2 CN-SEN HUMIDITY GN/YL SENSOR POWER COMP. RY-COMP TRANS THERMISTOR FUSE 250V T3.15A O.L.P BK(BR) (L) 3854A20247V 3854A20247V PART NO.

  • Page 14

    • MODEL : LD50ELY7/LD50EBLY7/LD65ELY7 PART NO. Q'TY DESCRIPTION PER SET MARKS LD65ELY7 LD50EBLY7/LD50ELY7 POWER CORD ASSEMBLY 6411A20001Z MOTOR ASSEMBLY 4681A20040J 4681A20040R CAPACITOR 0CZZA20005J 0CZZA20005J COMPRESSOR (ROTARY), SET 2520UCBA010 2520UCBA007 OLP. 6750U3L001A 6750U-L048A 6871A20600A PWB(PCB) ASSEMBLY, DISPLAY 6877A30013L SENSOR ASSEMBLY 6600A30003C SWITCH ASSEMBLY, MICRO 6871A20888A PWB(PCB) ASSEMBLY, MAIN...

  • Page 15: Disassembly Instructions

    3. DISASSEMBLY INSTRUCTIONS 3.1 MECHANICAL PARTS 3.1.1 BUCKET AND AIR FILTER 1. Turn the Humidity Control off(Mechanical type) or press the power button off. (Electronic type) 2. Disconnect the power supply. 3. Remove the bucket. (See Figure 9) 4. Pull out the air filter. (See Figure 10) Figure 9 Figure 10...

  • Page 16: Control Parts

    3.2 CONTROL PARTS 3.2.1 POWER CORD ASSEMBLY 1. After opening the control box, remove the screw that holds the ground wire. (See Figure 15) 2. Disconnect the remaining leads of the power cord from the PWB(PCB) ASSEMBLY, MAIN, then remove it from the control box. Figure 15 3.2.2 SENSOR ASSEMBLY 1.

  • Page 17: Coil Assembly, Solenoid

    ASSEMBLY, SOLENOID. (See Figure 19) 3. Pull it out upwards. Figure 19 3.2.7 CONTROL PANEL 3.2.6.1 CONTROL PANEL - Mechanical Type (DH305Y7/DH305T7/DH300MY7/DH400MY7/LD40Y7/DH500MY7) 1. Disconnect housing and all leads of the rocker switch, SWITCH ASSEMBLY, ROTARY and PWB(PCB) ASSEMBLY, DISPLAY from PWB(PCB) ASSEMBLY, MAIN (3.1.3) 2.

  • Page 18: Fan And Motor

    3.2.8 FAN AND MOTOR 1. Turn the nut left and full out the Fan by hands carefully. 2. Remove 2 screws that fasten Heat Exchange. 3. Lift the H/E and open the H/E around 45 degree clockwise carefully. (See Figure 22) 4.

  • Page 19: Refrigerating Cycle

    3.3 REFRIGERATING CYCLE 3.3.1 CONDENSER, EVAPORATOR AND CAPILLARY TUBE 1. Remove the insulation on the Heater/Evaporator (H/E) assembly 2. Pierce the pinch-off tube to discharge the refrigerant, using a refrigerant recovery system. 3. After discharging the refrigerant completely, remove 2 screws between the housing assembly and the H/E.

  • Page 20: How To Replace Refrigeration System

    3.4 HOW TO REPLACE THE REFRIGERATION SYSTEM 1. When replacing a refrigeration component, be sure 7. Recharge as follows : to discharge the refrigerant system by using a 1) Refrigeration cycle systems are charged from the refrigerant recovery system. High-side. If the total charge cannot be put 2.

  • Page 21

    Equipment needed: Vacuum pump, charging cylinder, manifold gauge, brazing equipment. pinch-off tool capable of making a vapor-proof seal, leak detector, tubing cutter, hand tools to remove components, service valve. EVAPORATOR ASSEMBLY (LOW PRESSURE SIDE) CONDENSER ASSEMBLY (HIGH PRESSURE SIDE) COMPOUND GAUGE MANIFOLD GAUGE CAPILLARY...

  • Page 22: Troubleshooting Guide

    4. TROUBLESHOOTING GUIDE CONDITION CAUSE REMEDY 1. Dehumidifier does not start. (Both No power Check power supply at outlet. compressor and fan motor do not Correct if none. operate.) Poor plug contact at outlet. Install plug properly or replace it. Bucket is full.

  • Page 23

    CONDITION CAUSE REMEDY 5. Noisy operating If cracked, out of balance, or partially missing, replace it Loose foreign material inside the housing. Remove it. Tube hits frame. Adjust tubing routine carefully. Fan blade hits frame Check Motor Mount. If loose, tighten it. Internal compressor noise.

  • Page 24: Exploded Views

    5. EXPLODED VIEWS • MODEL: DH305Y7/DH300MY7/DH305T7 W0CZZ-2 149980 349600 554030 354210 268711-2 359012 264110 249950 346811 435300 165010 131400 135312 266002 238310 149410 268711-1 436500 266003 352113 235512 35211A 152302 266010 552111 752140 330870 567502 130410 554160 144410 148391 550140...

  • Page 25

    • MODEL: DH300EY7 W0CZZ-2 149980 349600 554030 354210 268711-2 359012 264110 249950 346811 435300 165010 131400 135312 238310 235512 268711-1 436500 352113 35211A 152302 266010 552111 752140 330870 567502 130410 554160 144410 148391 550140 —25—...

  • Page 26

    • MODEL: DH400MY7/LD40Y7 149980 W0CZZ-2 349600 554030 354210 359012 268711-2 249950 346811 435300 264110 131400 165010 135312 266002 238310 149410 268711-1 436500 266003 352113 235512 35211A 152302 266010 552111 752140 330870 567502 130410 554160 144410 148391 550140 —26—...

  • Page 27

    • MODEL: DH404EY7/DH400EY7/LD40EY7 149980 W0CZZ-2 349600 554030 354210 359012 268711-2 249950 346811 435300 264110 131400 165010 135312 238310 235512 268711-1 436500 352113 35211A 152302 266010 552111 752140 330870 567502 130410 554160 144410 148391 550140 —27—...

  • Page 28

    • MODEL: DH500MY7 149980 W0CZZ-2 349600 554030 354210 359012 268711-2 249950 346811 435300 264110 131400 165010 135312 266002 238310 149410 268711-1 436500 266003 352113 235512 35211A 152302 266010 552111 752140 330870 567502 130410 554160 144410 148391 550140 —28—...

  • Page 29

    • MODEL: DH504ELY7 W0CZZ-2 149980 349600 554030 W0CZZ 354210 359012 268711-2 249950 346811 435300 264110 131400 165010 135312 238310 235512 268711-1 436500 552111 35211A 152302 266010 352113 752140 330870 567502 130410 554160 144410 148391 550140 —29—...

  • Page 30

    • MODEL: LD50ELY7/LD50EBLY7 149980 W0CZZ-2 349600 554030 354210 359012 268711-2 346811 249950 435300 264110 131400 165010 135312 238310 235512 268711-1 436500 552204 35211A 152302 266010 352113 752140 330870 567502 130410 554160 144410 550140 148391 —30—...

  • Page 31

    • MODEL: LD65ELY7 149980 W0CZZ-2 349600 554030 354210 359012 268711-2 346811 249950 435300 264110 131400 165010 135312 238310 235512 268711-1 436500 552204 35211A 152302 266010 352113 752140 330870 567502 130410 554160 144410 550140 148391 —31—...

  • Page 32: Replacement Parts List

    6. REPLACEMENT PARTS LIST • MODEL: DH305Y7/DH300MY7/DH305T7 PART NO. LOCATION DESCRIPTION REMARK DH305Y7 DH305T7 DH300MY7 130410 BASE ASSEMBLY 3041A10042E 3041A10042A 131400 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A10285C 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002A 149410 KNOB ASSEMBLY 4941A30019B...

  • Page 33

    • MODEL: DH300EY7 PART NO. LOCATION DESCRIPTION REMARK DH300EY7 130410 BASE ASSEMBLY 3041A10042A 131400 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A18012F 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002A 152302 FILTER(MECH),AIR 5230A20040A 165010 SENSOR ASEMBLY 6877A30013L 249950 CONTROL BOX,ASSEMBLY 4995A20622S 264110 POWER CORD,ASSEMBLY 6411A20001Z...

  • Page 34

    • MODEL: DH400MY7/LD40Y7 PART NO. LOCATION DESCRIPTION REMARK DH400MY7/LD40Y7 130410 BASE ASSEMBLY 3041A10042B 131400 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A10285E / 3531A20285B "B:LG/E:Goldstar" 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002A 149410 KNOB ASSEMBLY 4941A30019B 152302 FILTER(MECH),AIR 5230A20040A 165010 SENSOR ASEMBLY...

  • Page 35

    • MODEL: DH404EY7/DH400EY7/LD40EY7 PART NO. LOCATION DESCRIPTION REMARK DH404EY7/DH400EY7/LD40EY7 130410 BASE ASSEMBLY 3041A10042E 131400 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A18012A/E "A:Goldstar/E:LG" 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002A 152302 FILTER(MECH),AIR 5230A20040A 165010 SENSOR ASEMBLY 6877A30013L W0CZZ-2 CAPACITOR 0CZZA20005N...

  • Page 36

    • MODEL: DH500MY7 PART NO. LOCATION DESCRIPTION REMARK DH500MY7 130410 BASE ASSEMBLY 3041A10042A 131400 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A10285E 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002A 149410 KNOB ASSEMBLY 4941A30019B 152302 FILTER(MECH),AIR 5230A20040A 165010 SENSOR ASEMBLY 6877A30013L W0CZZ-2 CAPACITOR 0CZZA20005J...

  • Page 37

    • MODEL: DH504ELY7 PART NO. LOCATION DESCRIPTION REMARK DH504ELY7 130410 BASE ASSEMBLY 3041A10042A 131400 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A18012A 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002A 152302 FILTER(MECH),AIR 5230A20040A 165010 SENSOR ASEMBLY 6877A30013L W0CZZ-2 CAPACITOR 0CZZA20005J W0CZZ CAPACITOR 3H00660V 249950...

  • Page 38

    • MODEL: LD50ELY7 PART NO. LOCATION DESCRIPTION REMARK LD50ELY7 130410 BASE ASSEMBLY 3041A10042A 131400 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A18012E "A:Goldstar/E:LG" 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002A 152302 FILTER(MECH),AIR 5230A20040A 165010 SENSOR ASEMBLY 6877A30013L W0CZZ-2 CAPACITOR 0CZZA20005J...

  • Page 39

    • MODEL: LD50EBLY7 PART NO. LOCATION DESCRIPTION REMARK LD50EBLY7 130410 BASE ASSEMBLY 3041A10042A 131400 CABINET 3090A10042E 135312 FRONT GRILLE,ASSEMBLY 3531A18012P 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002E 152302 FILTER(MECH),AIR 5230A20040A 165010 SENSOR ASEMBLY 6877A30013L W0CZZ-2 CAPACITOR 0CZZA20005J 249950 CONTROL BOX,ASSEMBLY 4995A20622T 264110...

  • Page 40

    • MODEL: LD65ELY7 PART NO. LOCATION DESCRIPTION REMARK LD65ELY7 130410 BASE ASSEMBLY 3041A10042A 131400 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A18012E 330870 DRAIN PAN ASSEMBLY 3087A10019C 148391 TANK ASSEMBLY,BUCKET 4839A10002A 152302 FILTER(MECH),AIR 5230A20040A 165010 SENSOR ASEMBLY 6877A30013L W0CZZ-2 CAPACITOR 0CZZA20005J 249950 CONTROL BOX,ASSEMBLY 4995A20622L 264110...

  • Page 41

    January, 2007 P/No : MFL38891303 Printed in China...

Comments to this Manuals

Symbols: 0
Latest comments: