Medium
S.41 on Glow-worm Energy7 System

Your boiler has detected that the water pressure inside the system has become too high, which may prevent it from operating correctly.

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

Water pressure too high

From this model's manual
Verified against the Glow Worm Energy7 System installation & service manual, page 50.
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 a radiator in your home that has a bleed valvePlace a cloth and container under the valveOpen the valve slightly to release a small amount of water until the pressure gauge on the boiler drops to the recommended level (usually between 1.0 and 1.5 bar)Tighten the valve firmly

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