Search results

As I say in my original post: "It also, no longer moves the rod to flip the switch to tell the controller that it is hot enough." The rod is moved by the wax stat. Switch being the two under the cover. Read more...

Hi Brian, I came across your post while searching for a fix to my problem. It all works for about 20 minutes, when the central heating is on it overheats, the the overheat protection cuts in and isolates the electrics shutting the system down. When using the domestic hot water, washing in sink...

I have a Vaillant Boiler VCW Sine 18 20-1 25-1 T3W It's wax stat no longer opens fully. This causes it to overheat as the water no longer able to flow fast enough through that part of the system. It also, no longer moves the rod to flip the switch to tell the controller that it is hot enough. I...