Medium
5 pulses on Worcester Bosch Danesmoor

Your boiler has been left in a manual testing mode, which prevents it from operating normally to heat your home.

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

Check service mode switch is in max position

DIY fix possible

Locate the control panel on the front of the boiler.Find the service switch, which may be behind a small flap.Ensure the switch is turned back to the 'Normal' or 'Off' position rather than 'Max' or 'Min'.

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