Junkers DHW priority / pump overrun mode

Boiler shows P2; hot water priority or pump overrun active

Possible Causes

Normal operating mode after DHW draw-off, Control logic maintaining heat exchanger temperature

Safety: No safety risk; this is usually an information code.

Observe operation: P2 typically indicates that the boiler is giving priority to domestic hot water or running the pump to dissipate residual heat.
Wait: The code should clear automatically once the cycle is complete.
Check manual: Confirm in the Junkers user manual that P2 is an information code for your specific model.

Very Easy 1/5