Recent content by Doctor5

Thanks to the instructions on how to set the heating to part load I have suceeded in re-setting the load to 18kW. The boiler is running at the moment but it is usually better after it has been 'on' for two or three hours, so I'll reserve judgement until after start-up tomorrow. For 'gas4you'...

Three years ago I had a Vaillant Ecotec Condensing Boiler installed in place of my old Potterton (which worked fine). From the outset I had a problem with the overheat warning (Code S 53 on the diagnosis system). Three different Vaillant engineers said that the boiler was OK and the problem was...