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gas condencing boilers should be fitted as from the 1st of last mounth and were ever possable be fitted there is a points system applied and if the point are higher than statted on the calculation and declaration form then a non condencing boiler can be fitted. the vallient and the...

best thing you can do is to cut your loses and fit a gloworm or vailent condensing boiler as a fitter i have fitted most makes and i have found these two to be the most reliable and baxi barcalona to be the most unreliable

most likely fault is the solenoid on the gas valve is gone will need replacing might need to replace gas valve depends on make of gas valve

i would not recommend that you repair the board on the suprima there has been lots of problems with the first two types of boards and by trying to repair the board cause the boiler to become dangerous and only corgi engineers should repair boiler board needs to be replaced with the new mark 3 pcb.

what model of combi boiler and which heat exchanger ie main or hot water

:idea: the problem with the suprima 9 times out of 10 is the printed curcit board the latest board comes with all new wiring looms to rewire the boiler it is the mark 3 board and if it is for the suprima 80 and is pre 1998 or 1999 then there is also a further part that is needed to fit pcb...