P
plumbermw
Anybody had any trouble with the combustion controller on these boilers? only fitted one prior to this and had no problems, but after around a week after commissioning a fault has appeared"combustion controller" ive checked all possible causes from mi's and reset cleared the fault, was fine for a couple of days but now fault has reappeared and will not reset, viessmann wont come out until Monday so just wanted any suggestions as customer is now without heating and hot water until Monday
