Warning Z1 5394 - Internal compressor driver fault 1 (Over-current)

What does 5394 mean?

This warning indicates that the inverter has detected an over-current (> 42 A DC) to the compressor. This can be caused by issues in the cabling between the inverter and the compressor.

• Break, interruption, or short-circuit in the cabling between the inverter and compressor.

Click steps to track your progress.

1. 1

   Note the warning code 5394.

2. 2

   Contact a qualified Bosch Heat Pump installer or service technician.

3. 3

   The technician will check the cabling between the inverter and compressor for any damage or faulty connections.