BoilerFaultCodesWhat the manual says
Manufacturer manualLack of power supply or faulty electronic control p.c.b.
From this model's manual
Verified against the Biasi/Biasi Service Manual M96 24 Sm P installation & service 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 13 fault codes on the Parva HE Combi M96.28SM/P
Seeing a different code? Every code this model can display, in one place.
Excessive temperature on primary circuitFaulty air pressure switchFaulty c.h. temperature probe NTCFaulty d.h.w temperature probe NTCFaulty Electronic control/ignition p.c.b.Faulty flue temperature probe NTCFaulty primary circuitFaulty primary circuit (no water or absence of flow)Flue temperature probe NTC lockoutLack of burner ignitionLack of power supplySafety thermostat lockout