Our boiler is one end of our bungalow, which means a good 10m run to the bathroom bath/sink taps.
Of late, when these have been running, the boiler seems to cycle between pumping out water at max temp, then shutting down, then refiring. This being noticeable by hot/cold/hot/cold at the taps.
The cloakroom sink next to the boiler (so a 2m run) doesn't seem affected.
This has only started, so I presume something needs cleaning or replacing ?
We live in a very soft water area, and it's 21 year old Vaillant.
I did have it covered under one of these schemes. But dropped that over
10 years ago when I saw the "service" consisted of pointing a vacuum inside, and imperceptibly loosening a pipe (presumably for a call back "repair").
In the event of a replacement needed, I imagine I would get odds of
1,000,000:1 if the pipes lined up :)