BoilerFaultCodesWhat the manual says
Manufacturer manualNot enough fan driving force
Shared across the Pinnacle 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 fault occurs when the boiler's internal computer detects that the fan isn't reaching the speed required to safely clear exhaust fumes from the system. It is usually caused by the fan motor wearing out over time or a communication failure where the control board can no longer tell the fan how fast to spin.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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All 50 fault codes on the Pinnacle
Seeing a different code? Every code this model can display, in one place.