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

Typical repair cost for the Johnson Starley IGNITION LOCKOUT fault is £120-350 including labour.

IGNITION LOCKOUT High

Johnson Starley IGNITION LOCKOUT Fault Code

Q: What does the Johnson Starley IGNITION LOCKOUT fault code mean?

Your boiler has failed to light after several attempts and has locked itself for safety, leaving you without heating.

Also written as IGNITIONLOCKOUT — same fault.

The Johnson Starley IGNITION LOCKOUT fault code means: your boiler has failed to light after several attempts and has locked itself for safety, leaving you without heating.. It appears on 2 Johnson Starley models in our database.

Technical description: Should a fault occur, the heater will shut down and these blocking codes will be displayed.

Typical repair cost £120-350 (including labour)

DIY fix possible

Check that your gas pre-payment meter (if applicable) has credit.Ensure other gas appliances in your home, such as a hob, are working correctly.Press and hold the reset button for five seconds to attempt a restart.

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Johnson Starley models that show the IGNITION LOCKOUT fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Johnson Starley IGNITION LOCKOUT fault code information on this page is sourced and cross-checked against the official Johnson Starley service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026