Medium
305 on Worcester Bosch 24 RSF

Your boiler thinks a hot water tap is still running and is waiting for it to be turned off before it can provide heating.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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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 all hot water taps in the house are fully turned offEnsure there are no dripping hot water taps or leaking shower headsTurn the boiler off and back on at the power switch to reset the sensor

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