Trane ac error code 126

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Trane ac error code 126

Error code 126 on a Trane AC unit typically indicates a communication failure between the outdoor unit and the indoor unit. This could be due to a variety of reasons, such as a faulty communication cable, a damaged control board, or a malfunctioning sensor.

Here are a few steps you can take to troubleshoot this error:

  1. Turn off the power to the unit for a few minutes, and then turn it back on again. This may reset the system and clear the error code.
  2. Check the communication cable that connects the indoor and outdoor units. Make sure it is securely connected and not damaged or frayed.
  3. Check the control board for any signs of damage, such as burned or melted components. If you notice any damage, the control board may need to be replaced.
  4. Check the sensors on the indoor and outdoor units to make sure they are working properly. If a sensor is malfunctioning, it may need to be replaced.

If these troubleshooting steps do not resolve the issue, it may be best to contact a licensed HVAC technician to diagnose and repair the problem.