Alarm Z1 5527 - Too much refrigerant in cooling circuit

What does 5527 mean?

This alarm indicates that the Heat Pump has been overfilled with refrigerant. This condition is detected during hot water production when specific temperature and subcooling parameters are met for more than 5 minutes.

• Heat Pump overfilled with refrigerant.

Click steps to track your progress.

1. 1

   Note the alarm code 5527.

2. 2

   Contact a qualified Bosch Heat Pump installer or service technician.

3. 3

   The technician will need to evacuate the Heat Pump and refill it with the precise quantity of refrigerant specified on the unit's type plate.