Medium
22 on Glow-worm Compact (2006-2011)

Your boiler has detected that it is struggling to remove trapped air from the system, which can prevent heat from circulating properly.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Automatic Air Vent (inc seal)

From this model's manual
Verified against the Glow Worm Compact 2006 2011 installation & service manual, page 43.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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