How much does it cost to fix Glow-worm error code ci range?

Typical repair cost for the Glow-worm ci range fault is £220-450 including labour.

ci range High

Glow-worm ci range Fault Code

Q: What does the Glow-worm ci range fault code mean?

Your boiler has detected an internal fault with its control board or electronic circuit, meaning it cannot operate safely and has shut down.

Also written as CIRANGE — same fault.

The Glow-worm ci range fault code means: your boiler has detected an internal fault with its control board or electronic circuit, meaning it cannot operate safely and has shut down.. It appears on 3 Glow-worm models in our database.

Technical description: F3

Typical repair cost £220-450 (including labour)

Engineer required

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

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Glow-worm models that show the ci range fault code

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

Source

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

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