My vaillant combi keeps over filling and water pours out my over flow pipe. The local plumber came out and replaced the pressure release valve and drained the boiler down to 2 bar. After the plumber leaving the pressure went up to 3bar and water began coming out the over flow again. I called him back and he then capped off the filling pipe as this just seemd to fill the boiler up. He then left and again i had water coming out the over flow pipe .Doe s the pressure release valve need to be replaced again and does my boiler need a new filler pipe? This plumber has also advised me i may need a new heat exchange but he only replaced this in april this year. HELP !!!
VAILLANT COMBI BOILER OVER FILLING
- Thread starter GARRYDEAKIN
- Start date
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N
namsag
Does sound like the plate heat exchange has gone.
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