Technical description
Fanfrostprotectionfunctionactive:Fanspeedoutsidethetolerancevalues | Plugonfannotcorrectlypluggedin,multipleplugonPCBnotcorrectlypluggedin,breakincableharness,fanblocked,Hallsensordefective,electronicsdefective
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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