Low
d.50 on Glow-worm Energy7 Combi

Your boiler is undergoing an automatic adjustment to ensure its internal fan is spinning at the correct speed to keep the system running efficiently.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Correction of the minimum fan speed

From this model's manual
Verified against the Glow Worm Energy7 Combi installation & service manual, page 49.
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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