Medium
d.88 on Glow-worm Compact

Your boiler is struggling to detect the flow of water needed to start up your hot water, likely because it is not sensing the tap being turned on 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

Flow rate limit value for ignition in domestic hot water mode

From this model's manual
Verified against the Glow Worm Compact installation & service manual, page 42.
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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