Medium
305 on Worcester Bosch 30i Junior

Your boiler is confused and thinks you are still running a hot tap elsewhere in the house, preventing it from switching back to heating mode.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

The boiler is waiting for domestic hot water (DHW) operation to end

DIY fix possible

Check that all hot water taps in the house are fully turned off.Ensure any thermostatic mixer showers are turned off and not leaking.Reset the boiler by turning the control knob to the 'Reset' position for five seconds.

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