BoilerFaultCodesWhat the manual says
Manufacturer manualUser interface or distant control panel fault
From this model's manual
Verified against the Glow Worm Ci Range installation & service manual, page 34.
What causes this fault?
This fault occurs when the communication link between the boiler's internal computer and the front display panel is broken. It is usually caused by a loose connection cable or internal electrical wear on one of the circuit boards, which prevents your instructions from reaching the burner.
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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