Warning Z1 5523 - Internal compressor driver warning 3 (High AC current)

What does 5523 mean?

This warning indicates that the incoming AC current to the compressor driver has exceeded 31 A multiple times. It may signify a temporary malfunction within the inverter.

• Internal error in the inverter.
• Temporary malfunction within the system.

Click steps to track your progress.

1. 1

   Note the warning code 5523.

2. 2

   Observe if the warning clears on its own, as it might be a temporary issue.

3. 3

   If the warning persists or escalates to a customer-level alarm (code 5524), contact a qualified Bosch Heat Pump installer.