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

What Does CH62 Mean?❓

CH62 is triggered when the temperature of the inverter heat sink becomes too high. This typically occurs when airflow around the outdoor unit is obstructed or if the fan or cooling mechanism is not functioning properly. It’s a safety measure to prevent damage to sensitive electronic components.

air-conditioner - Causes of CH62 Error

  • Poor ventilation around the outdoor unit
  • Defective or weak inverter cooling fan
  • Blocked or dirty heat sink fins
  • High outdoor ambient temperatures
  • Faulty temperature sensor on the heat sink
  • Inverter board running under high load for too long

air-conditioner - How to Fix CH62 Error❓

  • Power Off the Unit

    1. Switch off the AC system from the main breaker.
    2. Wait at least 5 minutes before servicing.

  • Check Outdoor Ventilation

    1. Make sure the unit has sufficient airflow on all sides.
    2. Remove obstacles like walls, debris, or coverings.

  • Inspect the Inverter Cooling Fan

    1. Ensure the fan is spinning freely and at full speed.
    2. Replace the fan if it shows signs of failure.

  • Clean the Heat Sink

    1. Access the heat sink inside the outdoor unit.
    2. Use compressed air or a soft brush to clean the fins.

  • Test Heat Sink Sensor

    1. Use a multimeter to check if the sensor is reading correct temperatures.
    2. Replace if faulty or unresponsive.

air-conditioner - Helpful Tips

  • Do not install outdoor unit in direct sunlight if possible.
  • Keep a minimum clearance of 2–3 feet around the outdoor unit.
  • Schedule yearly maintenance to clean heat sinks and fans.
  • Turn off the AC for 10 minutes if it overheats frequently.
  • Consult a technician for inverter or PCB-related diagnostics.

Frequently Asked Questions❓

Question: Can CH62 damage my inverter board?
Answer: If ignored, yes. High heat can damage sensitive circuits and lead to expensive repairs.
Question: Will cleaning fix the CH62 error?
Answer: Cleaning the heat sink and checking the fan often resolves this issue.
Question: Should I replace the sensor or the whole board?
Answer: Only replace the sensor if it’s faulty. Replace the board if other fixes don’t help.

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