What does the Glow-worm F.88 fault code mean?

Your boiler has lost its electrical connection to the part that controls the gas supply, meaning it cannot safely start up to heat your home.

How much does it cost to fix Glow-worm error code F.88?

Typical repair cost for the Glow-worm F.88 fault is £180-350 including labour.

Manufacturer manual

Fault: Gas valve assembly (Gas valve assembly not connected, connected incorrectly, or short circuit in the cable harness)

Shared across the Flexicom 24c / 28c 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 emergency 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 F.88: no call-out fees, no surprise bills.

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