BoilerFaultCodesWhat the manual says
Manufacturer manualBurner control box lockout safety feature. Could be caused by: An interruption in the fuel supply; An electrical supply fault; A fault with the burner or its safety control system; The failure of a component (e.g. photo cell); Worn or dirty oil nozzle.
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.
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 4 fault codes on the Popular Heatpac
Seeing a different code? Every code this model can display, in one place.