HW ON pressure goes down

Jake2 · 24 Mar 2007

HI

We have problem with vailant combi 828, when hw is on pressure in the ch goes slowly down to 0. We don't have leaks 100%!!! This Happen when we using Shower about 20 min.
Thanks in advance for any good advice!!!

gas4you · 24 Mar 2007

I know you say no leaks, but have you checked the safety pipe outside when hot water has been on for a while?

Jake2 · 24 Mar 2007

Safty relief is dry as well, Is it possiblle that water from system goes to hw Tap outlet ( sound stupid but maybe).

gas4you · 24 Mar 2007

Is there any discoloration of chemical smell to dhw.

It shouldn't be able to do this though unless the DHW plate heat exchanger has had it

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HW ON pressure goes down

Jake2

gas4you

Jake2

gas4you

DIYnot Local

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