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haier | air-conditioner – Discharge Pipe Thermistor Fault
Error Codes (undefined): Troubleshooting, Fixes & Prevention Tips explained below.

What Does CH41 Mean?❓

CH41 indicates a fault in the thermistor located on the discharge pipe of the compressor. This sensor is essential for ensuring the refrigerant leaving the compressor is within safe temperature limits. An error is triggered when readings are abnormal, missing, or out of range.

air-conditioner - Causes of CH41 Error

  • Disconnected or loose thermistor wire
  • Sensor failure due to overheating or corrosion
  • Short circuit or open circuit in the thermistor wiring
  • Faulty inverter or main PCB
  • Water or dirt ingress affecting sensor readings

air-conditioner - How to Fix CH41 Error❓

  • Inspect Thermistor Connection

    1. Turn off the AC and open the outdoor unit.
    2. Check the discharge pipe thermistor for proper connection and any visible damage.

  • Check Resistance

    1. Use a multimeter to test resistance across the thermistor.
    2. Compare readings with manufacturer specs.

  • Replace Sensor if Faulty

    1. If the thermistor is damaged or readings are out of range, replace it with a genuine LG part.

  • Test System

    1. After replacement, run the AC to verify the CH41 error is cleared.

air-conditioner - Helpful Tips

  • Do not ignore temperature sensor faults—they protect the compressor.
  • Always disconnect power before inspecting any internal component.
  • Use only original LG parts when replacing thermistors.
  • Schedule periodic system checks to catch such issues early.
  • Protect outdoor units from dust and water to extend sensor life.

Frequently Asked Questions❓

Question: Can I use the AC with CH41 error?
Answer: It’s not recommended. The AC may not function properly and can overheat.
Question: Where is the discharge pipe thermistor located?
Answer: It’s typically attached to the discharge pipe coming out of the compressor in the outdoor unit.
Question: Is CH41 a serious issue?
Answer: Yes. It can lead to compressor failure if ignored.

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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