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  4. DH300E
  5. Service Manual

Goldstar DH300E Service Manual

Other manuals for DH300E: Service Manual, Service Manual

Summary of DH300E

  • Page 1

    Dehumidifier service manual models: dh300e/dh304 ld40/dh400m/gd40e dh404e/dh400e/ld40e dh504el/ld50el ld65el http://biz.Lgservice.Com caution - before servicing the unit, read the safety precautions in this manual. - only for authorized service..

  • Page 2: Contents

    —2— 1. Preface 1.1 safety precautions ...........................................................................................................................3 1.2 features and dimensions ................................................................................................................

  • Page 3: 1. Preface

    —3— 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...

  • Page 4

    —4— 1.4 specifications 1.3 model names model name capacity (pints/24hrs) 30 40 50 65 mechanical type electronic type control panel dh304, dh300m dh400m,ld40 - - dh300e gd40e,dh404e dh504el ld65el dh400e,ld40e ld50el *note:specifications are subject to minor change without notice for further improvem...

  • Page 5

    —5— 1 2 3 4 5 6 7 8 9 off max high low fan speed humidity control auto shut-off constantly on. Fan speed timer high low 4hr. On/off 2hr. On/off humidity control bucket full power auto restart humidity setting humidity control • when you first use the dehumidifier, turn the humidity control to 5 or 6...

  • Page 6

    —6— 1.6.1 how does the dehumidifier work? Moist, humid air is drawn over a cold refrigerated dehumidifying coil. Moisture in the air condenses on this coil and drains into a bucket (or through the bucket into a hose and drain). Dry, clean air is drawn over the condenser where it is actually heated s...

  • Page 7

    —7— 1.6.5 humidity controller 1.6.5.1 mechanical type the humidity control can be set anywhere between off and max for normal operation. If you need more dehumidification, turn the humidity control toward max. If you need less dehumidification, turn the humidity control toward off. The relative humi...

  • Page 8: 2. Circuit Diagram

    —8— 2. Circuit diagram • model : dh304, dh300m q'ty per set 1 1 1 1 1 1 1 1 1 1 1 re- marks s s s s s s s s s s s 1 2 3 4 5 6 7 8 9 10 11 description power cord assembly switch, rocker motor assembly ptc assembly re-compressor, set olp pwb(pcb) assembly, display sensor assembly switch assembly, rota...

  • Page 9

    —9— • model : dh300e s: service parts a: alternate parts n: not service parts q'ty per set 1 1 1 1 1 1 1 1 1 re- marks s s s s s s s s s 1 2 3 4 5 6 7 8 9 description power cord assembly motor assembly ptc. Assembly re-compressor, set olp pwb(pcb) assembly, display sensor assembly switch assembly, m...

  • Page 10

    —10— • model : dh400m/ld40 q'ty per set 1 1 1 1 1 1 1 1 1 1 1 re- marks s s s s s s s s s s s 1 2 3 4 5 6 7 8 9 10 11 description power cord assembly switch, rocker motor assembly capacitor compressor (rotary), set olp (assembly) pwb(pcb) assembly, display sensor assembly switch assembly, rotary swi...

  • Page 11

    —11— • model : gd40e/dh404e/dh400e/ld40e q'ty per set 1 1 1 1 1 1 1 1 1 re- marks s s s s s s s s s 1 2 3 4 5 6 7 8 9 description power cord assembly motor assembly capacitor compressor,set olp pwb(pcb) assembly,display sensor assembly switch assembly,micro pwb(pcb) assembly,main gd40e/dh404e/dh400e...

  • Page 12

    —12— • model : dh504el/ld50el/ld65el q'ty per set 1 1 1 1 1 1 1 1 1 1 re- marks s s s s s s s s s s 1 2 3 4 5 6 7 8 9 10 description power cord assembly motor assembly capacitor compressor (rotary), set olp. Pwb(pcb) assembly, display sensor assembly switch assembly, micro pwb(pcb) assembly, main co...

  • Page 13: 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) 3.1.2 front case and rear grille 1. Rem...

  • Page 14

    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. 3.2.2 sensor assembly 1. Disconnect th...

  • Page 15

    —15— 3.2.6 coil assembly, solenoid (dh504el, ld50el, ld65el) 1. Disconnect the housing of the coil assembly, solenoid from the pcb(pwb) assembly, main. 2. Remove the screw that fastens the coil assembly, solenoid. (see figure 19) 3. Pull it out upwards. 3.2.7 control panel 3.2.6.1 control panel - me...

  • Page 16

    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. Unfasten 3 screws that secure the motor and earth wire. (see figure 23) 5. Remove ...

  • Page 17

    —17— 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 screw...

  • Page 18

    —18— 1. When replacing a refrigeration component, be sure to discharge the refrigerant system by using a refrigerant recovery system. 2. After discharging the unit completely, remove the desired component, and unbraze the pinch-off tubes. 3. Solder service valves into the pinch-off tube ports, leavi...

  • Page 19

    —19— 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. B a compressor compound gauge manifold gauge see insets below external vacuum p...

  • Page 20: 4. Troubleshooting Guide

    Condition 1. Dehumidifier does not start. (both compressor and fan motor do not operate.) 2. Motor runs but compressor does not run. 3. Does not defrost control. 4. Insufficient dehumidification cause no power poor plug contact at outlet. Bucket is full. Humidity control is at off position wire disc...

  • Page 21

    —21— condition 5. Noisy operating 6. Water drips 7. Compressor cycles on overload protector. (olp) cause fan loose foreign material inside the housing. Tube hits frame. Fan blade hits frame internal compressor noise. Loose set screws worn bearings of motor assembly the bucket is not installed proper...

  • Page 22: 5. Exploded Views

    —22— 5. Exploded views • model: dh304/dh300m 354210 554030 130900 349600 149980 162615 346811 359012 268714 264110 148390 144410 752140 152302 436500 249950 266011 130411 235512 149410 435300 330870 266003 238310 135312 268712 266002 667482 558511 35211a 352113 552111 550140 554160 567502 hig h low ...

  • Page 23

    —23— • model: dh300e 354210 554030 135312 130900 349600 149980 346811 359012 148390 144410 752140 152302 436500 130401 268712 266011 238310 667482 550140 554160 567502 558511 35211a 352113 552111 435300 162615 268714 264110 249950 330870

  • Page 24

    —24— • model: dh400m/ld40 w0czz 162615 268714 264110 249950 35211a 352113 552111 550140 567502 554160 354210 554030 130900 349600 149980 346811 359012 148390 144410 752140 152302 436500 266011 130411 235512 149410 435300 330870 266003 238310 135312 268712 266002 hig h low fan speed hum idity co ntr ...

  • Page 25

    —25— • model: gd40e/dh404e/dh400e/ld40e w0czz 162615 268714 264110 249950 35211a 352113 552111 550140 567502 554160 354210 554030 135312 130900 349600 149980 346811 359012 148390 144410 752140 152302 436500 130401 268712 266011 238310 435300 330870

  • Page 26

    —26— • model: dh504el/ld50el w0czz 162615 268714 264110 249950 35211a 352113 552204 567502 554160 550140 354210 554030 135312 130900 349600 149980 346811 359012 148390 144410 752140 152302 436500 130401 268712 266011 238310 435300 330870

  • Page 27

    —27— • model: d65el w0czz 162615 268714 264110 249950 35211a 552204 352113 567502 554160 550140 354210 135312 554030 130900 349600 149980 346811 359012 148390 144410 752140 152302 436500 130401 268712 266011 238310 435300 330870

  • Page 28: 6. Replacement Parts List

    —28— 6. Replacement parts list • model: dh304/dh300m 130411 base assembly 3041a10042c 130900 cabinet 3090a10042a 135312 front grille,assembly 3531a10285c 330870 drain pan assembly 3087a10019b 148390 tank assembly,bucket 4839a10002a 149410 knob assembly 4941a30019b 152302 filter(mech),air 5230a20040a...

  • Page 29

    —29— • model: dh300e 130411 base assembly 3041a10042c 130900 cabinet 3090a10042a 135312 front grille,assembly 3531a10254f 330870 drain pan assembly 3087a10019b 148390 tank assembly,bucket 4839a10002a 152302 filter(mech),air 5230a20040a 162615 sensor asembly 6877a30013l 249950 control box,assembly 49...

  • Page 30

    —30— • model: dh400m/ld40 130411 base assembly 3041a10042b 130900 cabinet 3090a10042a 135312 front grille,assembly 3531a10285b / 3531a10254a "b:lg/a:goldstar" 330870 drain pan assembly 3087a10019a 148390 tank assembly,bucket 4839a10002a 149410 knob assembly 4941a30019b 152302 filter(mech),air 5230a2...

  • Page 31

    —31— • model: gd40e/dh404e/dh400e/ld40e 130411 base assembly 3041a10042b 130900 cabinet 3090a10042a 135312 front grille,assembly 3531a10254a/e "a:goldstar/e:lg" 330870 drain pan assembly 3087a10019a 148390 tank assembly,bucket 4839a10002a 152302 filter(mech),air 5230a20040a 162615 sensor asembly 687...

  • Page 32

    —32— • model: dh504el/ld50el 130411 base assembly 3041a10042a 130900 cabinet 3090a10042a 135312 front grille,assembly 3531a10254a/e "a:goldstar/e:lg" 330870 drain pan assembly 3087a10019a 148390 tank assembly,bucket 4839a10002a 152302 filter(mech),air 5230a20040a 162615 sensor asembly 6877a30013l w0...

  • Page 33

    —33— • model: ld65el 130411 base assembly 3041a10042a 130900 cabinet 3090a10042a 135312 front grille,assembly 3531a10254e 330870 drain pan assembly 3087a10019a 148390 tank assembly,bucket 4839a10002a 152302 filter(mech),air 5230a20040a 162615 sensor asembly 6877a30013l w0czz capacitor 0czza20005j 24...

  • Page 34

    P/no : 3828a31001a january, 2004 printed in china.