A
AnnNeedsHelp
I had a new Vaillant ecoTEC plus boiler only fitted in the summer. However, come home to find heating not working! It appears to heat the water but radiators cold. I've checked the pump is making the right sort of noise.... so I suspect it must be the diverter valve? I've tried to contact my fitter (always a stressful experience). Any ideas what it could be .... and costs involved? I may then try and find somebody on here if not response from htg engineer. Thanks for prompt reply. Ann