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Mend Water Keeps Valliant

water pressure keeps rising, on valliant turbomax?

water pressure keeps going up,have tried bleeding it down to 1 bar,but still keeps going up it is now nearly 3 bar.

Henry Adams
May 2008
remove filling loop, if pressure rise stops, then you found your problem.

If it still rises (when heating is off & cold) then you may have a leak in the dhw heat exchanger across the plates, it will need to be replaced

T
May 2008
expansion vessel has lost its charge or needs replaced or filling loop is letting by

regards

steve

steve
May 2008
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