This was another Vaillant TURBOmax Plus 828E I worked on this week, this one being a repair of a faulty printed circuit board. this was a job for a customer of mine who lives in S70, Barnsley, South Yorkshire.
This boiler is installed in a fairly large house and the customer actually has 3 of them which service various parts of the house.
He has had them for years and all 3 of them have been very reliable and he is reluctant to upgrade them for that reason and intends to keep them for as long as possible.
Anyway this particular TURBOmax would start to go through the ignition ignition sequence but would stop after the pump was running. The next part of there sequence is for the fan to run which wasn’t happening. So the first thing you check is that there is power going to the fan which there wasn’t.
The resistance on the coil on the fan can be checked to try and determine if thats ok. With no power going to the fan one could assure e the fan is ok but its not worth making assumptions for the time it takes to check.
Sometimes components(usually high voltage but can be low voltage on some boilers) can fail and cause the printed circuit board to fail in some way.
The air pressure switch could be stuck in the closed position, so one of the wires needs to be disconnected to rule this out. After that was checked I cam to the conclusion that the pcb was faulty. The appliance did not come up with any fault codes either and eventually the pump would stop running. One can also use the status codes to help with diagnose as these tell you what part of a sequence a boiler is at.
My guess is that one of the relays had failed. Anyway a new printed circuit board fixed this problem and the boiler is back up and running now.
Areas where I can service & repair your Vaillant TURBOmax boiler
I am located in Elsecar, Barnsley, South Yorkshire. I cover a large part of South Yorkshire including most of Sheffield, Rotherham and Barnsley. I also cover a small part of Doncaster.
Sheffield:
I cover most of Sheffield including central Sheffield, Chapeltown, Ecclesfield, Grenoside, High Green, Oughtibridge, Thurgoland, Wortley, Aston, Aughton, Swallownest, Todwick, Hillsborough and Stannington.
Rotherham:
I cover the whole area of Rotherham including central Rotherham, Brinsworth, Catcliffe, Canklow, Masbrough, Treeton, Whiston, Greasbrough, Kimberworth, Thorpe Hesley, Rawmarsh, Wentworth, Bolton-on-Dearne, Goldthorpe, Thurnscoe, Wath-on-Dearne, Mexborough, Swinton, Kilnhurst, Hooton Roberts, Ravenfield, Thrybergh, Bramley, Hellaby, Maltby, Thurcroft, Wickersley and Braithwell.
Barnsley:
I cover most of Barnsley including central Barnsley, Birdwell, Stairfoot, Worsborough, Kendray, Ardsley, Athersley, Monk Bretton, Lundwood, Royston, Brierley, Cudworth, Cortonwood, Great Houghton, Shafton, South Hiendley, Brampton, Darfield, Wombwell, Hemingfield, Elsecar, Hoyland, Jump, Barugh Green, Cawthorne, Darton, Dodworth, Gawber, Mapplewell, Pogmoor, Staincross, Wilthorpe, Worsbrough, Thurnscoe and Tankersley.
Doncaster:
I cover a small part of Doncaster including central Adwick, Conisborough, Edlington, Warmsworth and Mexborough.