Low
é0 on Remeha Avanta 18V

Your boiler is perfectly healthy and is simply waiting for a signal from your thermostat to turn on the heating or hot water.

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

stand-by mode

From this model's manual
Verified against the Remeha Avanta 18v installation & service manual, page 46.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

What causes this fault?

This fault occurs when the boiler's control board loses communication with the sensors that monitor water temperature. It is usually caused by a sensor element failing due to age or a loose electrical connection in the internal wiring. Because the boiler can no longer confirm it is operating at a safe temperature, it shuts down instantly to prevent overheating.

DIY fix possible

Check your room thermostat is set to a higher temperature than the current room temperatureEnsure your heating timer or programmer is set to 'On'If the boiler still does not fire, check your hot water tap or cylinder settings

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