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panasonic | air-conditioner – Room Temperature Sensor Fault
Error Codes (undefined): Troubleshooting, Fixes & Prevention Tips explained below.

What Does CH01 Mean❓

If LG air conditioner shows CH01, it means there's a problem with the room temperature sensor. This sensor tells the AC how hot or cold your room is. If it stops working, AC won’t cool properly.

air-conditioner - Why This Happens (Causes)

  • The sensor wire is loose or unplugged
  • The sensor itself is damaged
  • The wires are corroded or broken
  • A power surge affected the AC
  • There’s a problem with the control board (rare)

air-conditioner - How to Fix CH01 Error (Simple Steps)❓

  • Turn Off the AC

    1. Unplug it from the power for 10 minutes.
    2. This resets the system.

  • Check the Sensor (if you can open the unit)

    1. Look for a small sensor near the front coil.
    2. Make sure it’s plugged in properly.

  • Look for Damage

    1. If the sensor or its wire looks burned, cut, or corroded, it might need to be replaced.

  • Replace the Sensor (if needed)

    1. Buy a replacement sensor that works with your model.
    2. It’s a small part and not very expensive.

  • Call a Technician

    1. If you’re not sure or the problem continues, call LG support or a local AC repair expert.

air-conditioner - Helpful Tips - To avoid this problem in the future

  • Keep your AC clean
  • Use a voltage stabilizer to protect against power surges
  • Protect it from water and power surges
  • Get it checked once a year

Common Questions❓

Question: Can I fix CH01 by just resetting the AC?
Answer: Sometimes. But if the sensor is broken, you’ll need to fix or replace it.
Question: Is it dangerous to use the AC with this error?
Answer: It’s not dangerous, but it won’t cool properly, and the issue might get worse.
Question: How much does a new sensor cost?
Answer: Usually between $10–$30, not including labor.

When to Contact a Technician

If you experience any of the following issues even after completing the recommended troubleshooting steps, please contact an authorized service technician or our support team for further assistance.

  • The same error appears repeatedly after restarting or resetting the unit.
  • Multiple error codes appear simultaneously.
  • The device makes unusual noises, vibrations, or emits a burning smell.
  • The product fails to start, operate, or complete its function despite troubleshooting.
  • There are signs of electrical issues, physical damage, or leakage.
  • An unknown or unlisted error code appears on the display.

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