Low
P.04 on Glow-worm Energy7 Regular

Your boiler is currently in a manual testing mode used by engineers to check exhaust gases and is not indicating an actual breakdown.

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

Chimney sweep function

Shared across the Energy7 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.
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

Locate the chimney sweep button or setting on your boiler's control panelPress the button again to toggle the mode offWait for the boiler to return to its standard operational display

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Related fault codes

P.01View →P.02View →P.03View →

All 79 fault codes on the Energy7 Regular

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

Connectiond.02d.94F.00F.01F.10F.11F.13F.20F.23F.24F.25F.27F.28F.29F.32F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.77F.78F.83F.84F.85F.86F.87F.88F.91F.97P.01P.02P.03P.05P.06P.07P.10S.0S.01S.02S.03S.04S.05S.06S.07S.08S.20S.21S.22S.23S.24S.25S.26S.27S.28S.30S.31S.32S.34S.39S.42S.46S.53S.54S.88S.91S.96S.98S.99S.108S.109

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