LG DHR-3030 Automatic Dehumidifier Installation Guide

LG DHR-3030 Automatic Dehumidifier

Product Information

Specifications

• Brand: LG
• Model: DHR-3030
• Type: Dehumidifier
• Hosted By: Appliance Factory Parts

Product Usage Instructions

Setup and Installation
Follow these steps to set up your LG DHR-3030 Dehumidifier

1. Choose a location with proper air circulation.
2. Plug in the dehumidifier to a power outlet.
3. Set the desired humidity level using the control panel.
4. Ensure the water collection bucket is properly inserted.

Operating the Dehumidifier
To operate the dehumidifier effectively, follow these guidelines

1. Turn the unit on/off using the power button.
2. Monitor the humidity levels and adjust settings as needed.
3. Clean or replace the air filter regularly for optimal performance.
4. Empty the water collection bucket when full.

Maintenance and Care
To ensure longevity and efficiency, perform these maintenance tasks

1. Clean the air filter every month with a soft brush or vacuum.
2. Inspect the unit for any leaks or damage periodically.
3. Keep the area around the dehumidifier clear for proper airflow.

Frequently Asked Questions (FAQ):

• Q: How often should I clean the air filter?
  

  • A: It is recommended to clean the air filter of your LG DHR-3030 dehumidifier every month for optimal performance.

• Q: Can I use this dehumidifier in a large room?
  

  • A: The LG DHR-3030 is suitable for rooms of medium size. For larger rooms, consider using multiple units or a higher-capacity dehumidifier.

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Dehumidifier
SERVICE MANUAL

• MODEL
• DH30
• DH40
• DHS0
• DHS0E
• DHS0EL
• DH65EL
• DHR-3030
• DHE-3031
• DHR-4030
• DHE-4031
• DHR-5030

CAUTION

• BEFORE SERVICING THE UNIT,
  READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE.

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.

SAFETY PRECAUTIONS

• Disconnect the power supply before servicing or replacing any component.
• Do not cut off the grounding prong or alter the plug in any manner.

FEATURES AND DIMENSIONS

FEATURES

• Quiet operation
• High efficiency
• Adjustable humidistat
• Automatic defrost
• Automatic shut-off
• Bucket-full indicator light
• Easy roll casters
• Removable & large capacity bucket.
• Washable air filter
• Two-speed fan
• Drain hose connection.
• Low temperature operation (DH50EUDH65EL)

DIMENSIONS (mm/in)

MODEL NAMES

| MODEL NAME
---|---
CAPACITY (Pints/24hrs)| 30| 40| 50| 65
CONTROL PANEL| MECHANICAL TYPE| DH30, DHR-3030| DH40, DHR-4030| DH50, DHR-5030|
ELECTRONIC TYPE| DHE-3031| DHE-4031| DH50E,DH50EL| DH65EL

SPECIFICATIONS

s| DH30 DHR-3030 DHE- 3031| DH40 DHR-4030 DHE- 4031| DH50 DHR-5030 DH50E

**DH50EL***

| ****

**DH65EL***

---|---|---|---|---
CAPACITY (Pints/24hrs)| 30| 40| 50| 65
POWER SUPPLY (Phase, V, Hz)| 10, 115V,60Hz
REFRIGERANT| R134a| R22
REFRIGERANT CHARGE, oz(g)| 5.47(155)| 5.64(160}| 7.23(205)| 7.76(220}
THERMISTOR| OPEN| 30.2°F(-1 ±0.5°C)| 32.9°F(0.5 ±0.5°C)| 30.2°F(-1 ±0.5°C)
CLOSE| 50.0°F(10 ±0.5°C)| 53.6°F(12 ±0.5°C)| 50.0°F(10 ±0.5°C)
SOLENOID VALVE*| ****

–

| Using Temp/Humid.: -4-122’F(-20-50’C)/95% RH t

Rating : 7W/90mA

COMPRESSOR MODEL NO.| LX86HAQG| 2S78126A| QA084CBB| QA114CBF
P.T.C. ASSEMBLY| TYPE| P6R8MC| ****

–

TIME| WORKING TIME: 0.3 – 1.3 sec.

RETURN TIME: 65 sec.

MAXIMUM| AMPERE| 10A
VOLTAGE| 200V
PROTECTOR| •  OVERLOAD PROTECTOR FOR COMPRESSOR
•  INTERNAL PROTECTOR(FUSE) FOR MOTOR
CAPACITOR| –| 40µF, 200VAC| 30µF, 270VAC| (35)µF, 270VAC
MOTOR ASSEMBLY, SINGLE| Shaded pole motor, 65W/1A j,, Thermal cutoff : 266°F/130°C
SWITCH ASSEMBLY, MICRO| 15A/250VAC
OUTSIDE DIMENSIONS

w X H X D, mm(in)

| 30, 40 PINTS| 385 X 530 X 340 (15 3/15 X 20 14/15 X 13 6/15)
50, 60 PINTS| 385 X 600 X 340 (15 3/15 X 23 10/15 X 16 6/15)
NET WEIGHT, kg(lbs)| 22.7(50.0)| 17.2(37.8)| 21.2(46.8)| 21.6(47.6)

NOTE : Specifications are subject to minor change without notice for further improvement.

CONTROL TYPE

Mechanical type

HOW TO OPERATE DEHUMIDIFIER

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 several degrees and discharged out the front grill into the room. (See Figure 4)

It is normal for the surrounding air to become slightly warmer as the dehumidifier operates. This warming effect further reduces the relative humidity of the surrounding air.

LOCATION FOR THE DEHUMIDIFIER
Allow at least 12 inches of space on all sides of the unit for good air circulation. (See Figure 5)

• The dehumidifier must be operated in an enclosed area to be most effective.
• Close all doors, windows and other outside openings to the room.

Place the dehumidifier in a location that does not restrict air flow into the rear coil or out the front grille.
The operation of dehumidifier in a basement will have little or no effect in drying an adjacent enclosed storage area, such as a closet, unless there is adequate circulation of air in and out of the area.

MICRO SWITCH
The micro switch assembly, which is located on the drain pan 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.

AUTO DEFROST
When frost builds up on the cooling coils, the unit will automatically cycle off until the frost disappears. The fan continues to run.

NOTE: The unit is designed to be operated at temperatures above 65°F(18°C) in normal conditions. If the dehumidifier  is operated in low temperature conditions frost can form in the evaporator coil and the unit will cycle ON/OFF repeatedly. In this case, please check your room temperature conditions and stop the unit.

NOTE: The low temperature operation feature in the DH50EL and DH65EL models will continuously cycle up to a temperature of 43°F(6°C).

HUMIDITY CONTROLLER

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 humidity range is from 20% to 80%. (See Figure 6)
• Turn the Humidity Control to Off to stop the unit manually.

Electronic Type
The humidity control can be set ‘on’ or 35%-70% RH(Relative Humidity) for normal operation. (See Figure 7) If you need drier air, press the v. Humidity Control button. If you need moister air, press the A Humidity Control button.

Press the Power button to stop the unit manually.

DRYER (DH30, DHR-3030, DHE-3031)
Dryer is used to prevent capillary blockage from moisture in the refrigerant system and H/E, condenser and evaporator. Also, dryer is used to remove corrosion of the components.

NOTE: When dryer is replaced, proper injection to capillary is needed. On opening the dryer, it should be welded instantly. The oxidization of dryer inside and all tubes inside after welding can be prevented.

CIRCUIT DIAGRAM

MODEL : DH30/DHR-3030

• S : SERVICE PARTS
• A : ALTERNATE PARTS
• N : NOT SERVICE PARTS

NO.| DESCRIPTION| PART NO.| Q’TY

PER SET

| RE- MARKS
---|---|---|---|---
DH30/DHR- 3030
1| POWER CORD ASSEMBLY| 6411A20001Y| 1| s
2| SWITCH, ROCKER| 6600FX5001E| 1| s
3| MOTOR ASSEMBLY| 4681A20040E| 1| s
4| PTC ASSEMBLY| 6748C-0003D| 1| s
5| RE-COMPRESSOR, SET| 2521C-A8626| 1| s
6| OLP| 6750C-0009E| 1| s
7| PWB(PCB) ASSEMBLY, DISPLAY| 6871A20169B| 1| s
8| SENSOR ASSEMBLY| 6877A30013G| 1| s
9| SWITCH ASSEMBLY, ROTARY| 6601A30001B| 1| s
10| SWITCH ASSEMBLY, MICRO| 6600A30003C| 1| s
11| PWB(PCB) ASSEMBLY, MAIN| 6871A30032B| 1| s

MODEL: DHE-3031

NO.| DESCRIPTION| PART NO.| QTY

PER SET

| RE- MARKS
---|---|---|---|---
DHE- 3031
1| POWER CORD ASSEMBLY| 6411A20001Y| 1| s
2| MOTOR ASSEMBLY| 4681A20040E| 1| s
3| PTC. ASSEMBLY| 6748C-0003D| 1| s
4| RE-COMPRESSOR, SET| 2521C-A8626| 1| s
5| OLP| 6750C-0009E| 1| s
6| PWB(PCB) ASSEMBLY, DISPLAY| 6871A20279A| 1| s
7| SENSOR ASSEMBLY| 6877A30013H| 1| s
8| SWITCH ASSEMBLY, MICRO| 6600A30003C| 1| s
9| PWB(PCB) ASSEMBLY, MAIN| 6871A20162K| 1| s

• S: SERVICE PARTS
• A: ALTERNATE PARTS
• N: NOT SERVICE PARTS

MODEL: DH40/DHR-4030/DH50/DHR-5030

NO.

| ****

DESCRIPTION

| PART NO.| Q’TY

PER SET

| RE- MARKS
---|---|---|---|---
DH40/DHR-4030| DH50/DHR-5030
1| POWER CORD ASSEMBLY| 6411A20001Y| 6411A20001Z| 1| s
2| SWITCH, ROCKER| 6600FX5001E| 1| s
3| MOTOR ASSEMBLY| 4681A20040E| 1| s
4| CAPACITOR| 0CZZA20003D| 0CZZA20001R| 1| s
5| COMPRESSOR (ROTARY), SET| 5416A90009A| 2520UCDA003| 1| s
6| OLP (ASSEMBLY)| 6751A20001F| 6750U-L058A| 1| s
7| PWB(PCB) ASSEMBLY, DISPLAY| 6871A20169B| 1| s
8| SENSOR ASSEMBLY| 6877A30013G| 6877A30013H| 1| s
9| SWITCH ASSEMBLY, ROTARY| 6601A30001B| 1| s
10| SWITCH ASSEMBLY, MICRO| 6600A30003C| 1| s
11| PWB(PCB) ASSEMBLY, MAIN| 6871A30032A| 6871A3032B| 1| s

• S : SERVICE PARTS
• A : ALTERNATE PARTS
• N : NOT SERVICE PARTS

MODEL : DHE-4031/DHS0E

NO.| DESCRIPTION| PART NO.| Q’TY

PER SET

| RE- MARKS
---|---|---|---|---
DHE-4031| DH50E
1| POWER CORD ASSEMBLY| 6411A20001Y| 6411A20001Z| 1| s
2| MOTOR ASSEMBLY| 4681A20040E| 1| s
3| CAPACITOR| 0CZZA20003D| 0CZZA20001R| 1| s
4| COMPRESSOR (ROTARY), SET| 5416A90009A| 2520UCDA003| 1| s
5| OLP (ASSEMBLY)| 6751A20001F| 6750U-L058A| 1| s
6| PWB(PCB) ASSEMBLY, DISPLAY| 6871A20279A| 1| s
7| SENSOR ASSEMBLY| 6877A30013H| 1| s
8| SWITCH ASSEMBLY, MICRO| 6600A30003C| 1| s
9| PWB(PCB) ASSEMBLY, MAIN| 6871A20162L| 6871A20162K| 1| s

• S: SERVICE PARTS
• A: ALTERNATE PARTS
• N: NOT SERVICE PARTS

MODEL : DH50EL/DH65EL

NO.| DESCRIPTION| PART NO.| Q’TY PER SET| RE- MARKS
---|---|---|---|---
DHS0EL| DH65EL
1| POWER CORD ASSEMBLY| 6411A20001Z| 1| s
2| MOTOR ASSEMBLY| 4681A20040E| 1| s
3| CAPACITOR| 0CZZA20001R| 6120AR2359V| 1| s
4| COMPRESSOR (ROTARY), SET| 2520UCDA003| 2520UCDA004| 1| s
5| OLP.| 6750U-L058A| 6750U-L048A| 1| s
6| PWB(PCB) ASSEMBLY, DISPLAY| 6871A20279A| 1| s
7| SENSOR ASSEMBLY| 6877A30013H| 1| s
8| SWITCH ASSEMBLY, MICRO| 6600A30003C| 1| s
9| PWB(PCB) ASSEMBLY, MAIN| 6871A20162E| 1| s
10| COIL ASSEMBLY, SOLENOID| 6421A20003E| 1| s

• S: SERVICE PARTS
• A: ALTERNATE PARTS
• N: NOT SERVICE PARTS

DISASSEMBLY INSTRUCTIONS

MECHANICAL PARTS

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. Pressing the hooks, pull out the air filter. (See Figure 10)

FRONT CASE AND TOP COVER

1. Remove 4 screws which fasten the front case.
2. Pull the front case from the bottom and lift up.(See Figure 11)
3. Remove 2 screws that secure the top cover.
4. Remove the top cover. (See Figure 12)

CABINET AND CONTROL BOX (Upper)

1. Remove the bucket, air filter and top cover according to the procedure above.
2. Remove the screw from the top of the control box (upper), and pull out the control box. (See Figure 13)
3. Disconnect all wires from control box(lower) and remove front case completely.
4. Remove 7 screws from the back and sides.
5. Lift up the cabinet a little from the base pan and separate it by pulling out backward. (See Figure 14)

CONTROL PARTS

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) ASSEMBL V, MAIN, then remove it from the control box.

SENSOR ASSEMBLY

1. Disconnect the sensor assembly from the PWB(PCB) ASSEMBL V, MAIN.
2. Remove the screw which fastens the humidity sensor. (See Figure 16)
3. Remove the thermistor from the holder. (See Figure 16)
4. Disconnect the switch wires from the micro switch assembly. (See Figure 16)

PWB(P CB) ASSEMBLY, MAIN

1. Disconnect all leads of the motor and the compressor from PWB(PCB) ASSEMBLY, MAIN.
2. Remove the screw which fastens the PWB(PCB) ASSEMBLY, MAIN and pull it out after unhooking from 2 rectangular holes of the control box (lower).(See Figure 17)

CAPACITOR (Except DH30/DHR-3030/DHE-3031)

1. Remove the screw that fastens the capacitor. (See Figure 17)
2. Disconnect all leads from the capacitor and then remove it from control box.

MICRO SWIT CH ASSEMBLY
Turn the nut counterclockwise and pull out the micro switch from the drain pan. (See Figure 18)

COIL ASSEMBLY, SOLENOID (DH50EL/DH65EL)

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.

CONTROL PANEL

CONTROL PANEL – Mechanical Type (DH30/DHR-3030/DH40/DHR-4030/DH50/DHR-5030)

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. Pull out the knob assembly.
3. Remove the nut which fastens the SWITCH ASSEMBLY, ROTARY.
4. Remove the knob of the rotary switch by pulling it upward.
5. Pull out the rocker switch by pushing the hooks on the both sides of rocker switch.
6. Pull out the PWB(PCB) ASSEMBLY, DISPLAY after turning over both hooks of the display cover.

CONTROL PANEL- Electronic Type (DHE-3031/DHE-4031/DH50E/DH50EUDH65EL)

1. Disconnect the housing of the PWB(PCB) ASSEMBLY, DISPLAY from PWB(PCB) ASSEMBLY, MAIN (3.1.3).
2. Remove 5 screws that secure the PWB(PCB) ASS EMBLY, DISPLAY to the display cover.

HOUSING ASSEMBLY, FAN AND MOTOR

1. Remove 4 screws that fasten the housing assembly to the heat exchanger and drain pan. Lift the housing assembly upward after unhooking 2 hooks on the housing. (See Figure 22)
2. Remove the screw that secures the housing and orifice. Separate the orifice from the housing after unhooking 3 hooks on the housing. (See Figure 23)
3. Turn the nut clockwise and pull out the fan carefully. (See Figure 23)
4. Unfasten 2 screws that secure the motor. (See Figure 24)
5. Separate the motor.

DRAIN PAN

1. Remove the housing assembly according to the procedure above.
2. Unfasten 2 screws that secure the drain pan to the base.
3. Pull the drain pan backward then lift it from the base. (See Figure 25)

REFRIGERATING CYCLE

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. (See Figure 26)
4. Lift the H/E and open the H/E around 45 degree counterclockwise carefully.
5. Unbraze each of interconnecting tubes of the evaporator and condenser carefully.
6. Remove the H/E assembly from the orifice. (See Figure 27)
7. Unbraze the capillary tube at the connections of the condenser and evaporator. (See Figure 28)
8. Remove 4 screws between the condenser and evaporator. (See Figure 28)

PTC OR OVERLOAD PROTEC TOR (OLP) FOR RECIPROCATING COMPRESSOR (DH30/DHR-3030/DHE-3031)

1. Discharge the refrigerant by using a refrigerant Recovery System.
2. After purging the unit completely, unbraze the suction and discharge tubes at the compressor connections.
3. Remove the screw or nut which fastens the terminal cover
4. Disconnect the lead wire from the overload protector or PTC assembly.
5. Remove the overload protector(OLP) or PTC assembly. (See Figure 29)

ROTARY COMPRESSOR

1. Discharge the refrigerant by using a refrigerant Recovery System.
2. After purging the unit completely, unbraze the suction and discharge tubes at the compressor connections.
3. Remove the nuts and washers which fasten the compressor. (See Figure 30)
4. Remove the compressor. (See Figure 30)

HOW TO REPLACE THE REFRIGERATION SYSTEM

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, leaving the valves open.

4. Solder the pinch-off tubes with service valves.

5. After doing the above procedures, the valve must be closed and left in place on the system for any subsequent procedures.

6. Evacuate as follows.

7. Connect the vacuum pump, as illustrated in Figure 31A.

8. Start the vacuum pump, slowly open manifold valves A and B two full turns counterclockwise and leave the valves open.
   The vacuum pump is now pulling through valves A and B to valve C by means of the manifold and entire system.
   CAUTION
   If high vacuum equipment is used, just crack valves A and B for a few minutes, then open slowly with the two full turns counterclockwise. This will keep oil from foaming and being drawn into the vacuum pump.

9. Operate the vacuum pump for 20 to 30 minutes, until 600 microns of vacuum are obtained. Close valves A and B, and observe vacuum gauge for a few minutes. A rise in pressure would
   indicate a possible leak or moisture remaining in the system. With valves A and B closed, stop the vacuum pump.

10. Remove the hose from the vacuum pump and place it on the charging cylinder. See Figure 31 B. Open valve C.
    Discharge the line at the manifold connection.

11. The system is now ready for final charging.

12. Recharge as follows

13. Refrigeration cycle systems are charged from the High-side. If the total charge cannot be put in the High-side, the balance will be put in the suction line through the access valve which you installed as the system was opened.

14. Connect the charging cylinder as shown in Figure 318.
    With valve C open, discharge the hose at the manifold connection.

15. Open valve A and allow the proper charge to enter the system. Valve B is still closed.

16. If more charge is required, the high-side will not take it. Close valve A.

17. With the unit running, open valve B and add the balance of the charge.

  * Do not add the liquid refrigerant to the Low ­side.
  * Watch the Low-side gauge; allow pressure to rise to 30 lbs.
  * Turn off valve B and allow pressure to drop.
  * Repeat steps B and C until the balance of the charge is in the system.
6. When satisfied the unit is operating correctly, use the pinch-off tool with the unit still running and clamp on to the pinch-off tube. Using a tube cutter, cut the pinch-off tube about 2 inches from the pinch-off tool. Use SilFos solder and solder pinch-off tube closed. Turn off the unit, allow it to set for a while, and then test the leakage of the pinch-off connection.

NOTE: REFRIGERANT R134a IS USED IN SOME MODELS.
CHECK THE SPECIFICATION LABEL ON THE CABINET.

• When discharging refrigerant R134a, purging instrument should be used only for R134a, without mixing that of refrigerant R22.
• When checking the leakage of refrigerant R134a, leakage test tool should be used only for R134a.
• The pump for discharging should be high efficiency. Final discharging value must be managed below 0.5 Torr.
• Maximum water should be less than 150mg in the cycle­all tubes and H/E assembly-system.
• If water quantity is over 150mg, it causes acid or corrosion in the cycle system and the capillary tube to be clogged by water and harmful materials.
• Models charged with refrigerant R134a should be used dryer to prevent water from overflowing.

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.

TROUBLESHOOTING GUIDE

1. Dehumidifier does not start. (Both compressor and fan motor do not operate.)| 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 disconnected or loose| Connect wire. Refer to wiring diagram for terminal identification. Repair or replace loose terminal.
Capacitor.

(Discharge capacitor before testing.)

| Test capacitor.

Replace if not within ±10% of manufacturer’s rating. Replace if shorted, open, or damaged.

2. Motor runs but compressor does not run.| Voltage (115V ± 10%)| It must be between 103.SV and 126.SV. If not within limits, call an electrician
Wiring| Check the wire connections; If loose, repair or replace the terminal. If the wires are disconnected, refer to wiring diagram for identification, and replace the wires. Check the wire connections; If not according to the wiring diagram, correct the connections.
Rotary switch| Check for continuity, refer to the wiring

diagram for terminal identification. Replace the switch if the circuit is open.

Defrost control| The Defrost Control senses frost build-up on the evaporator coil and automatically shuts off the compressor. The fan continues to run, drawing air across the coil, and melting the frost. When the coil is defrosted, the compressor automatically

restarts, and dehumidifying resumes.

Capacitor

(Discharge capacitor before servicing.)

| Check the capacitor.

Replace if not within ±10% of manufacturer’s rating. Replace if shorted, open, or damaged.

Compressor| Check the compressor for open circuit or ground. If open or grounded, replace the compressor.
Overload protector (OLP)| Check the compressor OLP if externally mounted. Replace if open. (If the compressor temperature is high, remove OLP, cool, and retest.)
3. Does not defrost control.| Defrost control is defective.| Check defrost control, replace it.
4. Insufficient dehumidification| Low relative humidity| Turn dehumidifier off.
Poor air circulation| Move dehumidifier to obtain free and unobstructed air circulation.
H/E clogged with dust and dirt| Clean evaporator and/or condenser assembly
Air filter is dirty.| Clean it.
Motor is not operating.| Check Motor, repair or replace it.
CONDITION| CAUSE| REMEDY
---|---|---
5. Noisy operating| Fan| 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.| Replace compressor.
Loose set screws| Tighten them.
Worn bearings of Motor Assembly| If knocking sounds continue when running or loose, replace the motor. If the motor hums or noise appears to be internal while running, replace motor assembly.
6. Water drips| The bucket is not installed properly.| The bucket should be properly positioned on the hangers of the drain pan.
Connection may be loose.| Check connection and repair.
Leak in bucket| Replace bucket.
Water drips when bucket removed for emptying.| Before removing bucket, the unit should be turned off.
Bucket overflows.| Check micro switch and float.
7. Compressor cycles on overload protector. (OLP)| High or low line voltage. (115V ± 10%)| Check line voltage. It must be between 103.5V and 126.5V volts.

If intermittent, provide new supply.

Poor air circulation.| Move dehumidifier for free and unobstructed air flow.
Heat Exchange clogged with dust or dirt.| Clean dust or dirt on the Heat Exchange.
Motor| If not running, determine the cause. Replace if required.
Bad PTC assembly (if assembled)| Check PTC, Repair.
Short circuit or ground in electrical circuit| Check electrical circuit. Repair.
Unit pressures not equalized| Allow 2 or 3 minutes for pressure to equalize before starting compressor.
Capacitor| Test the capacitor.
Wiring| Check the terminals. If loose, repair or replace.
Refrigeration system| Check the system for a restriction.
Stuck compressor| Check compressor, replace compressor
Overload protector (OLP)| Check OLP, if externally mounted. Replace if open. (If the compressor temperature is high, remove the OLP, cool, and retest.)

EXPLODED VIEWS

MODEL: DH30/DHR-3030

REPLACEMENT PARTS LIST

MODEL: DH30/DHR-3030

• P/No : 3828A20090H
• October, 2004
• Printed in Korea

References

• Repair Your Grill: Shop Replacement Parts for 24,880 Models
• Lg Dehumidifier Parts - Select From 224 Models

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