BoilerFaultCodesWhat the manual says
Manufacturer manualFaulty c.h. temperature probe NTC
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Related fault codes
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 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 supplyLack of power supply or faulty electronic control p.c.b.Safety thermostat lockout