What does 5448 mean?

This alarm indicates that the Heat Pump may have too little refrigerant. This can happen if the electronic expansion valve has opened more than expected, suggesting a potential leak.

• Too little refrigerant in the Heat Pump.
• Possible leak in the refrigerant circuit.

Click steps to track your progress.

1. 1

   Note the alarm code 5448.

2. 2

   Contact a qualified Bosch Heat Pump installer or service technician.

3. 3

   The technician will check the refrigerant filling and inspect for leaks.