My problems started with the boiler pressure increasing and causing an error that required releasing some pressure.
The expansion vessel and PRV value were replaced.
The issue returned and the inlet valves were replaced as suspected they may have been passing a small amount of water.
I then...
Hi Andy
I called the vaillant technical support lots of russeling of manuals going on but they were not much help (especially at 60p a min) after about 10 mins they have suggested booking a service call.
My installer is coming back on Sat as he needs to fit the overflow into a drain so will...
Hi I have recently had a Vaillant Ecotec 837 combi installed but I am not sure if it is working correct - Can someone advise.
Hot water works fine no probs there.
The boiler has a Outdoor sensor for weather compensation installed - My installer had never fitted one before so he is unsure if...