http://biz.LGservice.com http://www.LGservice.com/techsup.html Dehumidifier SERVICE MANUAL MODEL: DH3010B(DHA3012DL) DH4010B(DHA4012DL) DH5010B(DHA5012DL) CAUTION - BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. - ONLY FOR AUTHORIZED SERVICE.
CONTENTS 1. PREFACE 1.1 SAFETY PRECAUTIONS ...........................................................................................................................3 1.2 FEATURES .................................................................................................................................................3 1.3 DIMENSIONS .............................................................................................................................................3 1.4 SPECIFICATIONS .......
1. PREFACE This Service Manual provides various service information, containing the mechanical and electrical parts etc. This dehumidifier was manufactured and assembled under the strict quality control system. The refrigerant is charged at the factory. Be sure to read the safety precaution prior to servicing the unit. 1.1 SAFETY PRECAUTIONS • Disconnect power supply before servicing or replacing any electrical or non-electrical component.
1.4 SPECIFICATIONS MODELS ITEMS CAPACITY (Pint/Day) DH3010B (DHA3012D*) DH4010B (DHA4012D*) 30 40 POWER SUPPLY (Phase, V, Hz) REFRIGERANT R22 4.76(135) 5.11(145) OPEN : 32°F(0°C +– 32 ) CONTROL, DEFROST CLOSE : 52.6°F(13°C +– 33 ) THERMOSTAT 50 1ø, 115V, 60Hz R134a REFRIGERANT CHARGE, oz(g) DH5010B (DHA5012D*) 7.05(200) OPEN : 32°F(0°C +– 32 ) – CLOSE : 53.6°F(13°C +– 33 ) OPEN : 28.4°F(-2°C ±2) OPEN : 26.6°F(-3°C ±2) OPEN : 28.4°F(-2°C ±2) CLOSE : 55.4°F(13°C ±2) CLOSE : 55.
1.5 CONTROL Humidity Control Low High 4 5 7 3 2 Auto Shut-Off 8 1 Fan Speed • 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. • When excess moisture and dampness odors are gone, adjust the control to a lower setting. Use the dehumidifier as long as excess moisture is present. 6 9 Off Max.
1.6.3 MICRO SWITCH The micro switch assembly, which is located on the barrier of inside unit, automatically shuts off the dehumidifier when the bucket is full (note, the Auto Shut Off lights, to indicate bucket must be emptied). The bucket replaces in its place, the unit again turns itself on. 1.6.4 AUTO DEFROST When frost builds up on the cooling coils, the compressor will cycle off until the frost disappears. The fan continues to run.
2. CIRCUIT DIAGRAM • MODEL : DH3010B/DHA3012DL BK SWITCH, ROTARY WH 4 BK(HI) RD(LO) SWITCH, LAMP GR/YL GR/YL 1 6 C BK(HI) N.C MOTOR RD(L) OR(COM) YL OR N.O BR BR BK 2 3 6 5 S 4 M LAMP, NEON 1 BR HUMIDISTAT BR TERMINAL BLOCK COMP. BK BL C O.L.P. CONTROL, DEFROST WIRING DIAGRAM LOCATION 3854A20015H PART NO. DESCRIPTION DH3010B NO.
• MODEL : DH4010B/DHA4012DL, DH5010B/DHA5012DL(DEFROST CONTROL TYPE) BK SWITCH, ROTARY WH BK(HI) RD(LO) RD MOTOR OR H BR BR BK 2 S RD BK R COMP. BK C BL CONTROL, DEFROST LAMP, NEON 1 RD BR HUMIDISTAT CAPACITOR OR C BK N.C BR O.L.P. WIRING DIAGRAM LOCATION 1 6 C N.O YL SWITCH, LAMP GR/YL GR/YL 4 3854A20015G PART NO. DESCRIPTION DH4010B NO.
• MODEL : DH4010B/DHA4012DL, DH5010B/DHA5012DL(THERMOSTAT CONTROL TYPE) BK WH SWITCH, ROTARY BK(HI) 4 1 RD(LOW) BK N.O MOTOR N.C C RD OR H BR BK RD 2 RD S BK L C THERMOSTAT R COMP C BL BK O.L.P 3854A20015M WIRING DIAGRAM LOCATION LAMP, NEON 1 BR HUMIDISTAT YL BR BR PART NO. DESCRIPTION DH4010B NO.
3. DISASSEMBLY INSTRUCTIONS 3.1 MECHANICAL PARTS 3.1.1 BUCKET AND AIR FILTER 2 1. Disconnect the power supply. 2. Turn the Humidity Control off. 3. Remove the bucket. (See Figure 5) 4. Flex the filter at the lower right corner and take it off. (See Figure 5) 1 Figure 5 3.1.2 FRONT GRILLE 1. Remove 2 screws which fasten the front grille. 2. By pushing the both sides of front grille, pull the front grille forward and upward. (See Figure 6) Push Push Figure 6 3.1.3. CABINET AND CONTROL BOX 1.
3.2 CONTROL PARTS 3.2.1 ROTARY SWITCH, HUMIDISAT AND NEON LAMP 1. Unfasten screws located in the bottom side of control box (see Figure 9) and fasten capacitor clamp. (DH5010B/DH4010B) And then unfold two sides of control box. (See Figure 9) 2. Disconnect housing and all leads of rotary switch, humidistat and neon lamp. 3. Remove 4 screws which fasten the rotary switch and humidistat. 4. Pull the neon lamp out. DH5010B DH4010B DH3010B 3.2.2 CAPACITOR 1.
3.2.7 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 14) 4. Unfasten 3 screws that secure the Motor and earth wire. (See Figure 15) 5. Remove the Motor. Figure 14 Figure 15 3.2.8 SHROUD AND BARRIER 1. Discharge the refrigerant by using a refrigerant Recovery System. 2.
3.3 REFRIGERATING CYCLE 3.3.1 CONDENSER, EVAPORATOR AND CAPILLARY TUBE(HEAT EXCHANGE ASSEMBLY) 1. Remove the insulation on the H/E assembly 2. Pierce the pinch-off tube to discharge the refrigerant, using a FREONTM recovery system. 3. After discharging the refrigerant completely, remove 2 screws between the shroud and H/E. (See Figure 17) 4. Lift the H/E and open the H/E around 45 degree clockwise carefully. 5. Unbrace two interconnecting tubes of the evaporator and condenser carefully. Figure 17 6.
3.3.2 P.T.C. OR OVERLOAD PROTECTOR (O.L.P.) FOR RECIPROCATING COMPRESSOR 1. Remove the cabinet. (Refer to section 3.1.3) 2. Remove a screw or a nut which fastens the terminal cover 3. Disconnect the lead wire from the overload protector or P.T.C. assembly. 4. Remove the overload protector(O.L.P) or P.T.C. assembly. (See Figure 20) Using Recipro Compressor model Figure 20 3.3.3 ROTARY COMPRESSOR 1. Remove the cabinet. (Refer to section 3.1.3) 2.
3.4 HOW TO REPLACE THE REFRIGERATION SYSTEM 1. When replacing the refrigeration cycle, be sure to discharge the refrigerant system by using a refrigerant recovery system. 2. After discharging the unit completely, remove the desired component, and unbrace the pinch-off tubes. 3. Solder service valves into the pinch-off tube ports, leaving the valves open. 4. Solder the pinch-off tubes with service valves. 5.
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.
4. TROUBLESHOOTING GUIDE Problem Possible Causes Remedy Dehumidifier does not start. The dehumidifier is unplugged. Make sure the dehumidifier's plug is pushed completely into the outlet. The fuse is blown/circuit breaker is tripped. Check the house fuse/circuit breaker box and replace the fuse or reset the breaker. Water has reached its preset level. Empty the bucket and replace properly. Bucket is not in the proper position and light is on.
CONDITION 1. Dehumidifier does not start. (Both compressor and fan motor do not operate.) CAUSE REMEDY No power Check power supply at outlet. Correct if none. Poor plug contact at outlet. Install plug properly or replace it. Bucket is full. If Auto Shut Off lights, empty the bucket and replace properly. Humidity control is at Off position Turn the humidity control switch toward Max. Wire disconnect or loose Connect wire. Refer to wiring diagram for terminal identification.
CONDITION 5. Noisy operating 6. Water drips 7. Compressor cycles on overload protector. (O.L.P.) CAUSE REMEDY Fan If cracked, out of balance, or partially missing, replace it Some material plunged and rattle. Remove it. Tube hits frame. Adjust tubing routine carefully. Fan blade hits frame Check Motor Mount. If loose, tighten it. Internal compressor noise. Replace compressor. Loose set screws Tighten them.
5.
• MODEL: DH4010B/DHA4012DL, DH5010B/DHA5012DL(DEFROST CONTROL TYPE) 269130 266003 252160 346811 264110 349600 152302 249950 W0CZZ 549990 359012 135312 149410 130900 147910 148380 354211 554030 266011 35211A 567502 554160 552111 352113 550140 130411 —21—
• MODEL: DH4010B/DHA4012DL, DH5010B/DHA5012DL(THERMOSTAT CONTROL 269120 266003 252160 269310 346811 264110 349600 152302 249950 W0CZZ 549990 359012 135312 149410 130900 147910 148380 354211 554030 266011 35211A 567502 554160 552111 352113 550140 130411 —22—
6. REPLACEMENT PARTS LIST • MODEL: DH3010B, DHA3012DL LOCATION NO. PART NO.
• MODEL: DH4010B/DHA4012DL, DH5010B/DHA5012DL(DEFROST CONTROL TYPE) LOCATION NO. DESCRIPTION PART NO.
• MODEL: DH4010B/DHA4012DL, DH5010B/DHA5012DL(THERMOSTAT CONTROL TYPE) LOCATION NO. DESCRIPTION PART NO.
• MEMO • —26—
P/No : 3828A30039T March, 2001 Printed in Korea