BoilerFaultCodesYour boiler has lost its settings and doesn't know how to burn gas efficiently, so it has shut down as a safety precaution.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Calibration request – boiler has detected an absence of calibration control.
What causes this fault?
This fault occurs when the boiler's internal computer suffers a memory failure and loses the specific tuning data required to manage the burner. The most common reason is an electronic glitch in the main control board or a communication failure between the board and the gas valve, meaning the boiler no longer knows how to safely mix gas and air.
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 E62 — 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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