What does the Main IGNITION LOCKOUT fault code mean?

Your boiler has failed to light because it cannot detect a proper gas supply or flame, meaning it has temporarily shut itself down for safety.

How much does it cost to fix Main error code IGNITION LOCKOUT?

Typical repair cost for the Main IGNITION LOCKOUT fault is £150-350 including labour.

Manufacturer manual

Is there gas at gas valve inlet? Is there gas flow from gas valve? Is there at least 18mbar dynamic at gas valve inlet?

Shared across the 12 Heat ErP 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.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Boiler cover options

A cover plan would handle faults like IGNITION LOCKOUT: no call-out fees, no surprise bills.

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Seeing a different code? Every code this model can display, in one place.