thermocompact

Hi yes I know this is an old combi boiler. I've had it for 22 years and it was in the house at least 5 years before we move in I believe. Boiler fire up fine. CH is fine. DHW activates diaphragm->servo->diverter valve, boiler starts and the heat exchanger gets hot. Water from tap gets hotish...

Vaillant thermocompact 142Eh (I know it is old) during this cold weather cannot heat my house enough. Any ideas as to why. The boiler was checked a while ago... cleaned/gas pressure tested/flame checked for low startup then full flame etc. Temp gauge says 70 c during this cold weather but it...

Hi all, I have a Vaillant thermocompact 628E, the pressure was around 0.6 bar (It should be around 1.0) so I filled it from the filling loop to around the number 1. Afterwards, I've noticed when the rads come on, the pressure on the boiler goes over the red line after the number 3, causing the...