How to repressurise your ecoTEC plus boiler | Vaillant

If you are struggling to get hot water or central heating, it may be that you need to repressurise your boiler. Low boiler pressure can be caused by water leaks or excessively bleeding radiators and force the boiler to shut down as a safety precaution.

If you find you are having to repeatedly re-pressurise your boiler, you should contact your local installer to check for any potential issues that may be causing the pressure reduction.