Brand:
LG
Category: Air Conditioner
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for LW8012ER
Uploaded: Nov. 21, 2025, 8:21 p.m.
Manual Publish Date: 2005-01-01
- Designed for COOLING ONLY.
- Powerful and quiet cooling.
- Top-down chassis for simple installation and service.
- Low air-intake, top cooled-air discharge.
- Built-in adjustable Thermistor
- Washable one-touch filter
- Compact size
- Equipped with reliable and efficient rotary compressor.
Troubleshooting and error codes
| COMPLAINT | CAUSE | REMEDY |
|---|---|---|
| Fan motor will not run. | No power | Check voltage at outlet. Correct if none. |
| Power supply cord | Check voltage to Control Box. If none, check power supply cord. Replace cord if circuit is open. | |
| Wire disconnected or con- nection 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. | |
| Will not rotate | Fan blade hitting shroud or blower wheel hitting scroll. Realign assembly. Units using slinger ring for condenser fan must have 1/4 to 5/16 inch clearance to the base. If it hits the base, shim up the bottom of the fan motor with mounting screw(s). Check fan motor bearings; if motor shaft will not rotate, replace the motor. | |
| Fan motor runs intermittently | Revolves on overload. | Check voltage. If not within limits, call an electrician. Test capacitor. Check bearings. Does the fan blade rotate freely? If not, replace fan motor. Pay attention to any change from high speed to low speed. If the speed does not change, replace the motor. |
| Fan motor noise. | Fan | If cracked, out of balance, or partially missing, replace it. |
| Turbo | If cracked, out of balance, or partially missing, replace it. | |
| Loose clamper | Tighten it. | |
| Worn bearings | 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. | |
| Compressor will not run, but fan motor runs. | Voltage | Check voltage. If not within limits, call an electrician. |
| Wiring | Check the wire connections, if loose, repair or replace the terminal. If wires are off, refer to wiring diagram for identification, and replace. Check wire locations. If not per wiring diagram, correct. | |
| Compressor will not run, but fan motor runs. | Thermistor | Check the TEMP control. If not at the lowest number, set TEMP control to this setting and restart the unit. Check the continuity of the thermistor. Replace the thermistor if the circuit is open. |
| Compressor cycles on overload. | Capacitor (Discharge capacitor before servicing.) | Check the capacitor. Replace if not within ±10% of manufacturers rating. Replace if shorted, open, or damaged. |
| Compressor | Check the compressor for open circuit or ground. If open or grounded, replace the compressor. | |
| Overload | Check the compressor overload, if externally mount-ed. Replace if open. (If the compressor temperature is high, remove the overload, cool it, and retest.) | |
| Compressor cycles on overload. | Voltage | Check the voltage. If not within limits, call an electrician. |
| Overload | Check overload, if externally mounted. Replace if open. (If the compressor temperature is high, remove the overload, cool, and retest.) | |
| Compressor cycles on overload. | Fan motor | If not running, determine the cause. Replace if required. |
| Condenser air flow restric- tion | Remove the cabinet. inspect the interior surface of the condenser; if restricted, clean carefully with a vac-uum cleaner (do not damage fins) or brush. Clean the interior base before reassembling. | |
| Compressor cycles on overload. | Condenser fins (damaged) | If condenser fins are closed over a large area on the coil surface, head pressures will increase, causing the compressor to overload. Straighten the fins or replace the coil. |
| Compressor cycles on overload. | Capacitor | Test capacitor. |
| Insufficient cooling or heat- ing | Wiring | Check the terminals. If loose, repair or replace. |
| Refrigerating system | Check the system for a restriction. | |
| Air filter | If restricted, clean of replace. | |
| Exhaust damper door | Close if open. | |
| Unit undersized | Determine if the unit is properly sized for the area to be cooled. | |
| Excessive noise | Turbo or fan | Check the set screw or clamp. If loose or missing, correct. If the turbo or fan is hitting air guide, rearrange the air handling parts. |
| Copper tubing | Remove the cabinet carefully and rearrange tubing not to contact cabinet, compressor, shroud, and barri-er. |