Medium
S.041 on Vaillant ecoTEC Plus 832

Your boiler has detected that the water pressure inside your heating system is currently set too high for it to operate safely.

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

Thewaterpressureintheheatingsystemistoohigh.

From this model's manual
Verified against the Vaillant Ecotec Plus installation & service manual, page 79.
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 is easy to access.Open the radiator bleed valve slowly with a bleed key to release a small amount of water into a cloth or container.Monitor the pressure gauge on the front of your boiler until it drops back into the green zone (typically 1.0 to 1.5 bar).

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