Low
S.76 on Glow-worm Energy

Your boiler is simply reminding you that the water pressure inside your heating system has dropped and needs topping up.

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

Maintenance message: Check the water pressure

From this model's manual
Verified against the Glow Worm Energy installation & service manual, page 33.
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 (a silver flexible hose with one or two valves) underneath your boiler.Slowly open the valve(s) to let water into the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 bar.Ensure the valve(s) are closed tightly once the pressure is correct.

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