godrej | air-conditioner Error Codes: Troubleshooting, Fixes & Prevention Tips explained below.
What Does CH27 Mean?❓
CH27 refers to a detected fault in the inverter`s power circuit—most often due to excessive current or a failure in the PFC or PSC part of the board. It helps protect your AC’s critical components by stopping operation when unsafe conditions are detected.
air-conditioner - Causes of CH27 Error
- Inverter board overcurrent
- PFC circuit failure
- Shorted or faulty IGBT components
- Loose or burnt wiring
- Compressor locked rotor leading to current spike
air-conditioner - How to Fix CH27 Error❓
Power Reset
- Turn off the AC and unplug from power.
- Wait 10 minutes, then plug it back in.
Check Outdoor Unit
- Listen for unusual noises from compressor or circuit board.
- Look for signs of burnt smell or wires.
Test Power Supply
- Ensure power is stable (220–240V).
- Use a stabilizer if needed.
Inspect Inverter PCB
- If overcurrent persists, the board likely needs replacement.
- Call LG service for inspection.
Replace Faulty IGBT
- Technician may need to test and replace IGBT or PFC module.
air-conditioner - Helpful Tips
- Never connect AC to unstable or generator power.
- Install a surge protector or voltage stabilizer.
- Clean the outdoor unit regularly to prevent overheating.
- Avoid running the unit continuously at maximum load.
- Have a technician service the inverter PCB annually.
Frequently Asked Questions❓
- Question: What causes CH27 error in LG ACs?
- Answer: It’s usually due to inverter overcurrent, PFC failure, or damaged PCB parts.
- Question: Is CH27 dangerous?
- Answer: Not dangerous to you, but serious for the AC. It may damage inverter components.
- Question: Can I continue to use the AC with CH27?
- Answer: No. The unit will likely not function properly until fixed.
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