Low
STANDBY NEON on Halstead Hero

Your boiler is perfectly fine and is simply waiting for you to turn on a tap or adjust your heating thermostat.

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

Neon light indicating the appliance is connected to power but not in active demand.

From this model's manual
Verified against the Halstead Hero installation & service manual, page 19.
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 your room thermostat is set higher than the current room temperatureEnsure your heating timer or programmer is set to 'on'Run a hot water tap to see if the boiler fires up

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