CH60
LG CH60 Error Code – Outdoor unit PCB EEPROM check sum error.
Air Conditioner · CRITICAL Severity
What This Error Means
If the PCB tracks are not damaged, replace the outdoor PCB.
Diagnostic & Repair Steps
1
Power Reset
Turn off the unit at the main switch. Wait 10 minutes to allow all capacitors to fully discharge. Restart and observe if the error clears. ⚠️ Wait full 10 minutes - inverter capacitors hold dangerous charge
Turn off the unit at the main switch. Wait 10 minutes to allow all capacitors to fully discharge. Restart and observe if the error clears. ⚠️ Wait full 10 minutes - inverter capacitors hold dangerous charge
RESET
~10 min
2
Visual Inspection of PCB
Inspect the outdoor unit PCB/inverter board for burnt components, swollen capacitors, burnt smell, or visible physical damage. ⚠️ Discharge capacitors before handling PCB - use discharge resistor
Inspect the outdoor unit PCB/inverter board for burnt components, swollen capacitors, burnt smell, or visible physical damage. ⚠️ Discharge capacitors before handling PCB - use discharge resistor
INSPECT
~15 min
3
Check Input Power Supply
Measure incoming power supply voltage at the outdoor unit terminal block. Verify voltage is within acceptable range (220-240V AC ±10%). ⚠️ Extreme caution when measuring live voltage
Measure incoming power supply voltage at the outdoor unit terminal block. Verify voltage is within acceptable range (220-240V AC ±10%). ⚠️ Extreme caution when measuring live voltage
TEST
~10 min
4
Check Compressor and Wiring
Inspect compressor UVW wiring connections at the inverter PCB. Ensure connectors are secure and wires are undamaged. Measure compressor winding resistance. ⚠️ Ensure capacitors are discharged before working on inverter
Inspect compressor UVW wiring connections at the inverter PCB. Ensure connectors are secure and wires are undamaged. Measure compressor winding resistance. ⚠️ Ensure capacitors are discharged before working on inverter
CHECK
~15 min
5
Replace Inverter/Control PCB
If no external fault is found, the inverter PCB or control PCB is likely faulty and requires replacement with the correct part number. ⚠️ Ensure power is off and capacitors are fully discharged before replacement
If no external fault is found, the inverter PCB or control PCB is likely faulty and requires replacement with the correct part number. ⚠️ Ensure power is off and capacitors are fully discharged before replacement
REPLACE
~45 min
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