Your boiler is having trouble starting the burner safely and needs a simple restart to clear a temporary electronic glitch.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition scott actuators error – try resetting the boiler
What causes this fault?
This fault occurs when the boiler's internal computer is unable to correctly calibrate the movement of the gas valve during the startup sequence. The most common reason is a temporary communication lag between the control board and the ignition components, though it can also indicate that the components are beginning to wear out.
DIY fix possible
Locate the Reset button on the boiler control panelPress and hold the Reset button for 5 secondsWait for the boiler to complete its startup sequence
Find a Gas Safe engineer
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A boiler cover plan would cover faults like 12-65 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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