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Pressure too high, Vaillant Boiler

Posted by Lifong Zou, on Sun 06 Dec 2015 01:12pm

I use Valliant boiler, have found the hot water is not warm this morning, and when look at the boiler, the Pressure indicated too high, the indicator is at at largest value in the red zone, what should I do?

Richard Weir

Mon 07 Dec 2015 08:39am

Hi Lifong, It looks to me like you could have a problem with either your expansion vessel or the filling loop on your system is letting by; either way they are not DIY tasks and so I would recommend posting the information on Rated People and getting a gas engineer to look at the boiler. Good luck.

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