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

What Does CH44 Mean?❓

CH44 refers to an issue with the outdoor ambient temperature sensor in an LG air conditioner. This sensor helps the AC adjust cooling cycles depending on outside conditions. When the readings are missing, out of range, or unstable, the unit may show this error and pause operation.

air-conditioner - Causes of CH44 Error

  • Sensor is disconnected or loose
  • Corrosion or physical damage to sensor wiring
  • Sensor failure due to long-term exposure to elements
  • Short circuit or open circuit in sensor wiring
  • Faulty outdoor control board or poor signal processing

air-conditioner - How to Fix CH44 Error❓

  • Check Sensor Connection

    1. Turn off the AC and open the outdoor unit.
    2. Ensure the ambient sensor is connected properly to the PCB.

  • Inspect for Damage

    1. Look for signs of corrosion, broken wires, or rodent damage.
    2. Replace damaged connectors or wires.

  • Test Sensor Resistance

    1. Use a multimeter to test resistance and compare with LG’s specifications.
    2. If the value is off, the sensor is likely faulty.

  • Replace Sensor if Needed

    1. Use a compatible LG outdoor ambient temperature sensor.
    2. Reconnect and test the AC to ensure the error clears.

air-conditioner - Helpful Tips

  • Do not ignore outdoor sensor errors—they affect cooling accuracy.
  • Regularly inspect the outdoor unit, especially after storms or long periods of inactivity.
  • Always turn off the power before opening the outdoor unit.
  • Keep the outdoor unit clean to avoid environmental sensor failure.
  • Replace sensors with genuine LG parts only.

Frequently Asked Questions❓

Question: Can I use my AC if the outdoor sensor is faulty?
Answer: It may still work but cooling will be inefficient or erratic.
Question: Where is the outdoor air sensor located?
Answer: It’s usually clipped near the condenser coil in the outdoor unit.
Question: Is CH44 an expensive repair?
Answer: No, replacing a sensor is relatively low-cost compared to other AC issues.

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