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lg | air-conditioner Error Codes: Troubleshooting, Fixes & Prevention Tips explained below.

What Does CH23 Mean?❓

CH23 typically points to an abnormal AC power input or voltage imbalance that may disrupt the normal functioning of the air conditioner. This protective error prevents damage to internal components due to unstable power.

air-conditioner - Causes of CH23 Error

  • Voltage imbalance between input phases
  • Sudden power surge or low voltage supply
  • Faulty power cable or loose terminal connections
  • Damaged main PCB or relay board
  • Unstable power source or grounding issues

air-conditioner - How to Fix CH23 Error❓

  • Turn Off and Unplug the AC

    1. Disconnect power for 5–10 minutes to allow the system to reset.
    2. Plug it back in and turn on to see if the error clears.

  • Check Power Supply

    1. Use a multimeter to check voltage across phases.
    2. Ensure balanced input power.

  • Inspect Wiring and Terminals

    1. Tighten any loose connections.
    2. Replace any burnt or corroded wires.

  • Examine the PCB

    1. Check for signs of burning or damage.
    2. Replace if the board is faulty.

  • Use Stabilizer if Needed

    1. Install a voltage stabilizer if your area has frequent voltage fluctuations.

  • Call an Electrician

    1. For repeated errors, consult a licensed technician or LG support.

air-conditioner - Helpful Tips

  • Use a reliable voltage stabilizer to prevent future errors.
  • Avoid running the AC during voltage dips or surges.
  • Ensure proper grounding of the power supply.
  • Have your home electrical setup inspected yearly.
  • Always plug your AC into a dedicated socket.

Frequently Asked Questions❓

Question: Can I fix CH23 by resetting the AC?
Answer: Sometimes a power cycle can clear the error if the issue was temporary.
Question: Is CH23 harmful for the AC?
Answer: If ignored, unstable voltage may damage internal boards or compressor parts.
Question: Do I need a technician for CH23?
Answer: If the error returns frequently, yes, call an expert to inspect power and connections.

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