Medium
A41 on Vokera Vibe MAX S

Your boiler has detected that the water pressure is getting too low to operate correctly and needs to be topped up.

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

Fill the system (transitional)

Shared across the Vibe MAX 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 filling loop (usually a silver braided hose with small valves) underneath the boiler.Slowly open the valves until you hear water flowing into the unit.Watch the pressure gauge and close the valves tightly once it reaches 1.5 bar.

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Related fault codes

A40View →F41View →A42View →

All 18 fault codes on the Vibe MAX S

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

>3.0 barA10A11A20A30A40A42A58A59A60A70A80A90A91CFSFILSFS

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Step by step using the filling loop.

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