Low
S.22 on Glow-worm Energy7 Combi

Your boiler is currently preparing the internal water pump to provide hot water to your taps.

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

Domestic hot water mode: Pump prerun

From this model's manual
Verified against the Glow Worm Energy7 Combi installation & service manual, page 51.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Wait a few minutes for the boiler to complete its cycleCheck that your hot water tap is fully openIf the code persists for more than 10 minutes, turn the boiler off and back on again to reset it

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Related fault codes

S.20View →S.21View →S.23View →

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