BoilerFaultCodesYour boiler's gas control mechanism has stopped moving correctly, which means the system cannot safely regulate the fuel it needs to stay alight.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: STEP MOTOR FAILURE: MOTOR CONNECTION OR MOTOR FAILURE.
What causes this fault?
This fault occurs when the small internal motor that regulates the gas supply fails to move into the correct position. The most common reason is that the motor's internal components have worn out or become physically stuck, meaning the boiler can no longer safely control the amount of fuel entering the burner.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like 15 — no call-out fees, no surprises.
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