BoilerFaultCodesWhat the manual says
Manufacturer manualDHW mode: Pump/fan overrun. The pump/fan overrun for domestic hot water mode is activated.
What causes this fault?
This status occurs because the internal components of your boiler become very hot while heating your shower or taps. The boiler needs to keep the pump and fan running for a short period to move that heat away and prevent the system from overheating. It is a normal part of the boiler's operation and ensures the longevity of the internal parts.
DIY fix possible
No action is required; this is a normal operating status and not a fault.Wait a few minutes for the boiler to complete the cooling cycle.Check that your hot water taps are fully closed.
Avoid the next call-out bill
A cover plan would handle faults like S.25: no call-out fees, no surprise bills.
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Related fault codes
All 148 fault codes on the ecoTEC pro 28 H combi A VUW GB 286/5-3 A
Seeing a different code? Every code this model can display, in one place.