E56 - Power transistor thermistor faulty or disconnected

What does E56 mean?

This error signifies that the power transistor thermistor (FDCVA151-251) in the outdoor unit is faulty or has become disconnected.

• Faulty power transistor thermistor.
• Loose or disconnected wiring to the thermistor.
• Damage to the thermistor or its connector.

Click steps to track your progress.

1. 1

   Turn off the main power supply to the outdoor unit at the circuit breaker.

2. 2

   Have a qualified technician inspect the power transistor thermistor and its wiring connections.

3. 3

   Ensure all connections are secure and free from damage.

4. 4

   The technician will test the thermistor's functionality and replace it if it's faulty.