Recent content by superfab

the heating does seem to fire up but is patchy and when the hot water does reach 73 degrees when the hot tap is turned on it occasionally then cuts out and the temp drops and then fires back up again usually a short time later.

Hi all, any advice on the following problem would be much appreciated. The problem is this; The boiler seems to preheat to around 70 degrees. When I turn on the hot water tap it takes a while for the boiler to fire up and the amber indicator light to come on. It can be almost straight away or...

I've just been seaching the web as I've had the S33 problem for a year. I had an engineer out twice who replaced the Diverter Valve but did not sort the problem out. Sounds like, reading your thread, that it most likely is the Air Pressure Switch. Is this straightforward to replace?? Just pull...