5110 (1214) Backup operation Temperature sensor fault - Heatsink temperature (THHS)

What does 5110 (1214) mean?

This fault indicates a problem with the heatsink temperature sensor (THHS). This sensor is crucial for monitoring the temperature of the heatsink during backup operation. If the issue recurs after a reset, the INV board may need replacement.

• Defective heatsink temperature sensor (THHS).
• Loose or disconnected wiring to the THHS.
• Faulty INV (inverter) board.

Click steps to track your progress.

1. 1

   Turn off the power to the unit at the circuit breaker for at least 5 minutes.

2. 2

   Check the wiring connections for the THHS sensor for any signs of looseness or damage.

3. 3

   Restore power to the unit and observe if the error clears. The system might attempt a backup operation.

4. 4

   If the problem recurs during or after backup operation, contact a qualified technician.

5. 5

   A technician will need to inspect the INV board for potential replacement.