Low
S.00 on Vaillant Turbomax Plus VUW 242EH

Your boiler is currently in standby mode because it has not been asked to provide any heating.

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

No heat demand (heating operation)

From this model's manual
Verified against the Vaillant Turbomax Plus 824 828e installation & service manual, page 38.
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 to a higher temperature than the current room temperature.Ensure your programmer or heating timer is switched to the 'on' position.Verify that your thermostatic radiator valves are fully open.

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