BoilerFaultCodesWhat the manual says
Manufacturer manualUnit will not start: Attempts to ignite during start failed - Faults in the gas supply such as: - Gas meter or gas pressure regulator - Air in gas - Gas flow pressure too low Faults in the gas valve, wrong gas setting, igniter (ignition transformer, ignition cable, ignition plug) defective, ionisation current stopped (cable, electrode), faulty earthing in appliance, electronics defective
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.
Avoid the next call-out bill
A cover plan would handle faults like F.28: no call-out fees, no surprise bills.
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Related fault codes
All 38 fault codes on the ecoTEC plus 937
Seeing a different code? Every code this model can display, in one place.