BoilerFaultCodesWhat the manual says
Manufacturer manualFlame detection fault
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 fault occurs when the boiler's control system senses a flame when it shouldn't, or it cannot verify that the gas has ignited properly. The most common reason is a sensor or electrode that has become worn, dirty, or damaged, leading to an incorrect signal being sent to the main circuit board.
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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Related fault codes
All 52 fault codes on the Flexicom hx
Seeing a different code? Every code this model can display, in one place.