BoilerFaultCodesWhat the manual says
Manufacturer manualDHW mode: Fan overrun. The fan overrun for domestic hot water mode is activated.
Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
What causes this fault?
This status occurs because your boiler needs to purge excess heat after you have finished using your hot water taps. The fan continues to spin for a short period to safely move warm air out of the system and prevent internal components from overheating. It is a normal safety function rather than a breakdown.
DIY fix possible
Wait a few minutes for the status code to clear automaticallyEnsure your hot water taps are fully closedCheck if the code persists after a restart
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