5367 - Bosch Heat Pump Z1 low overheating alarm

What does 5367 mean?

This alarm indicates that Bosch Heat Pump zone 1 is experiencing conditions of low overheating. It triggers after 3 warnings in 3 hours, or if a warning is active for 30 minutes.

• The valve motor is not correctly installed or operating.
• The expansion valve motor is defective.
• The expansion valve VR1 is open too much or stuck in an open position.

Click steps to track your progress.

1. 1

   Check the valve motor for correct installation and ensure valves open and close in the correct order.

2. 2

   Activate the 'test outdoor unit' function through your Heat Pump's settings or app.

3. 3

   If repeated warnings occur, contact a qualified technician to check the expansion valve motor and valve VR1 for proper operation.