How much does it cost to fix Ravenheat error code lockout?

Typical repair cost for the Ravenheat lockout fault is £120-250 including labour.

lockout High

Ravenheat lockout Fault Code

Q: What does the Ravenheat lockout fault code mean?

Your boiler has detected that it is getting too hot and has safely switched itself off to prevent damage.

Also written as LOCKOUT — same fault.

The Ravenheat lockout fault code means: your boiler has detected that it is getting too hot and has safely switched itself off to prevent damage.. It appears on 1 Ravenheat model in our database.

Technical description: An overheat cut off thermostat set slightly higher than the high limit thermostat acts to turn off the burner to resetable "lockout" (Fig. 50) 3.

Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ravenheat models that show the lockout fault code

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

CSI Repair: £120-250

Source

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

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