Recent content by vmr

Hi Sifu, Oilman, Thank you very much for your help. I've checked the thermistor - it measured 915 Ohms before turning on the hot water (~20C) and 1.020 Kohms at the moment boiler cuts off - unfortunately had no proper thermometer. Also tried adjusting P2 - it was at the maximum clockwise...

Many thanks, The water is very hot before the boiler switches off, but the flame doesn't reduce - I'll check it again for any changes, but in any case the boiler switches off totally. I have got a multimeter and will appreciate to tell me how to check the thermistor. Is it possible to increase...

Hi, I have a problem with my Ferroli combi 77FF. CH is O.K., but when using hot water for 5-10 min the boiler overheats and cuts off totally (pilot flame is also off). It is same when shower or kitchen tap is used. The problems started year ago during the winter and there was almost no problem...