How much does it cost to fix Glow-worm error code F.82?

Typical repair cost for the Glow-worm F.82 fault is £180-350 including labour.

F.82 High

Glow-worm F.82 Fault Code

Q: What does the Glow-worm F.82 fault code mean?

Your boiler has detected a safety issue with the part that controls the gas supply, causing it to shut down to prevent a fault.

Also written as F82 — same fault.

The Glow-worm F.82 fault code means: your boiler has detected a safety issue with the part that controls the gas supply, causing it to shut down to prevent a fault.. It appears on 6 Glow-worm models in our database.

Technical description: Gas valve switch-off control fault

What causes the Glow-worm F.82 fault?

This fault occurs when the boiler's control board detects that the gas valve is not shutting off correctly or is drawing the wrong amount of electrical current. The most common reason is an internal electronic failure within the valve itself or a communication error from the main circuit board failing to regulate the gas flow safely.

Typical repair cost £180-350 (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 F.82 fault code

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

Source

Glow-worm F.82 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