BoilerFaultCodesWhat the manual says
Manufacturer manualDHW mode: Fan start-up
Shared across the ecoTEC exclusive 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 is a normal operational status that occurs when your boiler prepares to provide heat or hot water. It means the internal fan is spinning up to the correct speed to ensure there is enough air for the combustion process to begin safely. Once the fan reaches the required speed, the boiler will proceed to the next stage of ignition.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
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Related fault codes
All 71 fault codes on the ecoTEC exclusive
Seeing a different code? Every code this model can display, in one place.