The LG DLG7188WM is a high-capacity electric dryer with steam technology, sensor drying capabilities, and multiple drying cycles. This repair manual covers safety procedures, technical specifications, disassembly instructions, troubleshooting guides, and maintenance procedures for qualified service technicians. Below are key sections for safety, features, technical specifications, disassembly procedures, and troubleshooting.
Before performing any service or repair procedures, ensure proper safety measures are followed.
| Hazard | Precaution |
|---|---|
| Electrical Shock | Disconnect power before servicing. Verify power is off with voltage tester. |
| High Temperature | Allow unit to cool completely before disassembly. |
| Moving Parts | Ensure drum and motor are stationary before beginning work. |
| Sharp Edges | Wear protective gloves when handling internal components. |
| Gas Leaks (if applicable) | Check all connections with leak detection solution. |
Key components: Control panel, heating element, motor assembly, drum, blower fan, thermal fuse, moisture sensors, door switch.
| Component | Description |
|---|---|
| Control Panel | Touch controls with LCD display for cycle selection |
| Heating Element | 5400W electric heating assembly |
| Motor Assembly | 1/3 HP motor with drive belt |
| Drum | 7.3 cu.ft. stainless steel drum |
| Blower Fan | Centrifugal fan for airflow |
| Thermal Fuse | Safety cutoff at 194°F (90°C) |
| Moisture Sensors | Stainless steel sensors for automatic drying |
| Door Switch | Safety interlock switch |
Follow these steps in order for proper disassembly.
WARNING! Label all wires and take photos during disassembly for proper reassembly.
Use multimeter for all electrical testing.
| Component | Test Procedure | Expected Reading |
|---|---|---|
| Heating Element | Test terminals for continuity | 10-50 ohms |
| Thermal Fuse | Check for continuity | 0 ohms (closed) |
| Motor | Test windings for continuity | 2-20 ohms |
| Door Switch | Check continuity when depressed | 0 ohms (closed) |
| Thermostat | Test at room temperature | 0 ohms (closed) |
Common error codes and their meanings.
| Error Code | Description | Possible Cause |
|---|---|---|
| dE | Door Error | Door not closing properly |
| tE | Temperature Error | Overheating or sensor failure |
| LE | Motor Error | Motor not running |
| FE | Flow Error | Airflow restriction |
| SE | Sensor Error | Moisture sensor failure |
Regular maintenance procedures for optimal performance.
CAUTION! Never operate dryer without lint filter installed.
Reverse disassembly procedure with attention to proper alignment.
Post-repair testing procedures.
| Part Number | Description | Qty |
|---|---|---|
| 6321ER2002A | Heating Element | 1 |
| 4681EA2001T | Motor Assembly | 1 |
| 6501KW1008B | Thermal Fuse | 1 |
| 3870ER1002A | Drive Belt | 1 |
| MDS42905902 | Door Switch | 1 |
| 6871EL1002B | Control Board | 1 |
| MDS42905901 | Drum Roller | 4 |
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No power | Power cord, door switch, thermal fuse | Check power source; test door switch and thermal fuse |
| No heat | Heating element, thermostat, thermal fuse | Test heating element continuity; check thermostat operation |
| Drum not turning | Drive belt, motor, idler pulley | Inspect belt for wear; test motor operation |
| Overheating | Vent blockage, thermostat, airflow | Clear vent system; test thermostat calibration |
| Error codes displayed | Sensor failure, control board | Reset unit; test sensors; check control board |
| Excessive noise | Drum rollers, blower wheel, foreign objects | Inspect rollers; check blower wheel; remove obstructions |
Reset Procedure: Unplug for 5 minutes to reset control board.
Service Support: 1-800-243-0000; www.lg.com