Medium
S.76 on Glow-worm Energy7 Combi

Your boiler is reminding you that the water pressure inside the system has dropped below the recommended level and needs to be topped up.

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

Maintenance message: Check the water pressure

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 external filling loop (a flexible metal hose) connected underneath your boiler.Open the valves on both ends of the filling loop to allow cold mains water into the system.Watch the pressure gauge on the front of the boiler until the needle reaches the green zone (usually between 1 and 1.5 bar).Close both valves tightly and remove or disconnect the filling loop if required.

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Related fault codes

All 154 fault codes on the Energy7 Combi

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

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