BoilerFaultCodesWhat the manual says
Manufacturer manualFaulty Electronic control/ignition p.c.b.
Shared across the Parva 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 13 fault codes on the Parva 28S
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 flue temperature probe NTCFaulty primary circuitFaulty primary circuit (no water or absence of flow)Flue temperature probe NTC lockoutLack of burner ignitionLack of power supplyLack of power supply or faulty electronic control p.c.b.Safety thermostat lockout