Low
S.76 on Glow-worm Energy System

Your boiler is reminding you that it is time for a routine service or that your central heating water pressure is slightly outside of the ideal range.

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 System installation & service manual, page 34.
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

Check the pressure gauge on the front of your boiler; it should ideally be between 1 and 1.5 bar.If it is below 1 bar, locate the filling loop (usually a silver braided hose under the boiler) to top up the pressure.Check your boiler service history record to see if an annual service is now due.

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