What does LG AC error code CH 01 mean?

CH 01 indicates a communication error between the indoor unit and system, usually caused by wiring issues or connection failure.

How do I fix LG CH 03 error?

Check drain hose blockage, inspect drain pump, clean drain pan, and restart the unit.

Is LG CH 38 dangerous?

Yes. CH 38 indicates a refrigerant leak. Turn off immediately and contact a technician.

Can LG AC errors reset automatically?

Some errors reset after turning off power for 5–10 minutes and restarting the unit.

Why does my LG air conditioner keep showing error codes?

Common causes include sensor failure, dirty filters, wiring issues, or unstable power supply.

When should I call a technician for LG AC errors?

Call a technician if there is compressor failure, refrigerant leak, PCB issue, or repeated errors after reset.

GE Air Conditioner Error Codes & Troubleshooting Guide

This guide explains all GE Air Conditioner error codes (CH series) with simple troubleshooting steps to help you identify and fix common issues safely before calling a technician.

EEPROM Parameter Error

Disconnect power for 10 minutes.
Inspect control board connections.
Check for firmware or memory corruption.
Replace PCB if error persists.

Room Temperature Sensor Failure

Inspect room temperature sensor wiring.
Clean dust around the sensor.
Test thermistor resistance values.
Replace sensor if faulty.

Indoor Coil Sensor Error

Check evaporator coil sensor wiring.
Inspect for frost or ice buildup.
Test sensor continuity.
Replace sensor if defective.

Outdoor Unit Communication Failure

Inspect indoor-to-outdoor communication wiring.
Check connectors for corrosion.
Reset system power.
Replace communication PCB if needed.

Compressor Overload Protection

Turn off the air conditioner.
Inspect refrigerant pressure levels.
Check compressor wiring.
Allow the system to cool before restarting.

Voltage Protection Activated

Check incoming voltage stability.
Inspect breaker and outlet condition.
Use a voltage stabilizer if needed.
Restart unit after voltage normalizes.

Compressor Temperature Protection

Inspect condenser coil for dirt.
Ensure outdoor airflow is unrestricted.
Check refrigerant system performance.
Allow unit to cool before restarting.

Fan Motor Malfunction

Inspect fan blades for obstruction.
Check motor wiring connections.
Test fan motor capacitor.
Replace fan motor if faulty.

Compressor Start Failure

Check power supply stability.
Inspect compressor wiring and capacitor.
Verify refrigerant conditions.
Replace relay if needed.

Defrost Sensor Fault

Inspect defrost sensor wiring.
Check sensor resistance values.
Look for ice buildup around coils.
Replace sensor if faulty.

Indoor Fan Speed Error

Check indoor fan motor operation.
Inspect speed sensor wiring.
Clean fan assembly.
Replace motor if speed is unstable.

Expansion Valve Fault

Inspect expansion valve wiring.
Check refrigerant flow.
Reset unit power.
Replace valve if necessary.

Frost Protection Mode

Allow automatic defrost to complete.
Clean air filters.
Inspect coil temperature sensor.
Restart after frost clears.

High Pressure Protection

Inspect condenser coil for blockage.
Check outdoor fan operation.
Verify refrigerant charge.
Allow pressure to normalize.

Overload Protection

Turn off unit and allow cooling.
Inspect compressor load conditions.
Check power supply stability.
Restart after reset.

Communication Failure

Inspect indoor and outdoor wiring harness.
Check connectors for corrosion.
Reset system power.
Replace communication board if needed.

E10

EEPROM Data Corruption

Power cycle unit for 10–15 minutes.
Check control board for moisture damage.
Inspect firmware integrity.
Replace PCB if error persists.

E11

Indoor Ambient Sensor Fault

Check room sensor wiring.
Clean dust around sensor housing.
Test thermistor resistance.
Replace sensor if faulty.

E12

Outdoor Ambient Sensor Error

Inspect outdoor sensor wiring.
Check for corrosion or water intrusion.
Test resistance values.
Replace sensor if defective.

E13

Coil Temperature Sensor Fault

Inspect coil sensor placement.
Check wiring harness condition.
Test sensor continuity.
Replace sensor if faulty.

E14

Compressor Current Overload

Turn off unit immediately.
Check compressor condition.
Inspect refrigerant pressure.
Replace relay or capacitor if needed.

E15

Low Refrigerant Detection

Check for refrigerant leaks.
Inspect system pressure readings.
Look for oil residue around piping.
Repair leaks and recharge refrigerant.

E16

High Discharge Temperature

Inspect condenser coil cleanliness.
Check outdoor fan operation.
Verify airflow is unobstructed.
Allow system to cool before restart.

E17

Outdoor Fan Failure

Inspect fan blades for obstruction.
Check motor wiring.
Test capacitor and motor operation.
Replace fan motor if faulty.

E18

Indoor Fan Failure

Check blower fan for blockage.
Inspect motor wiring harness.
Test fan speed operation.
Replace motor if defective.

E19

Condensate Overflow

Check drain pan for clogs.
Inspect drain hose for blockage.
Clean condensate line thoroughly.
Ensure proper drainage slope.

E20

High Pressure Switch Trip

Clean condenser coil.
Check for refrigerant overcharge.
Ensure outdoor airflow is unrestricted.
Reset system after pressure normalizes.

E21

Low Pressure Switch Trip

Check for refrigerant leaks.
Inspect suction line for blockage.
Test system pressure.
Recharge refrigerant after repair.

E22

Inverter Module Failure

Reset power supply completely.
Inspect inverter board for damage.
Check compressor wiring.
Replace inverter PCB if faulty.

E23

Phase Loss Error

Check electrical supply stability.
Inspect wiring connections.
Verify correct voltage phases.
Contact an electrician if needed.

E24

Sensor Calibration Error

Reset unit to factory settings.
Check sensor mounting position.
Inspect calibration data.
Replace sensor or PCB if required.

Frequently Asked Questions

Why is my GE air conditioner not cooling?

Check that the thermostat is set correctly and cooling mode is selected. Clean or replace dirty air filters, ensure doors and windows are closed, and inspect refrigerant levels if cooling remains weak.

Why is my GE AC not turning on?

Check the power supply and circuit breaker. Ensure the power cord is securely connected, replace remote control batteries if needed, and try resetting the unit by unplugging it for several minutes.

Why is my GE air conditioner leaking water?

Inspect the drain line for clogs, clean dirty air filters, ensure the unit is properly leveled, and check for ice buildup on the evaporator coil.

Why is my GE AC making loud noises?

Check for loose panels or components, clean fan blades and remove debris, ensure the outdoor unit is unobstructed, and inspect the motor or compressor if noise persists.

Why does my GE AC smell bad?

Clean the air filter and evaporator coil, remove any mold or moisture buildup, clean the drain pan, and run fan-only mode to help dry the system.

Why is my GE AC blowing warm air?

Verify that cooling mode is selected, clean clogged filters, inspect the outdoor unit for proper operation, and check refrigerant levels if cooling performance is poor.

Why is my GE AC remote not working?

Replace the remote batteries, ensure there are no obstructions blocking the sensor, verify compatibility with the unit, and restart the air conditioner if necessary.

Why does my GE AC turn off by itself?

Check timer or sleep mode settings, inspect the power supply for interruptions, clean air filters to prevent overheating, and look for any active error codes on the display.

Why is my GE AC not responding to controls?

Restart the air conditioner, check remote control batteries, inspect the control panel for faults, and verify that the appliance is receiving stable power.

How do I reset my GE air conditioner?

Turn off the unit and unplug it from the power source. Wait 5–10 minutes, restore power, press the reset button if available, and reconfigure settings as needed.

Important: If the error code continues after troubleshooting, disconnect power immediately and contact a certified GE technician.