Thanks Boilerman2
Sorry for not responding sooner.
Problem cured now. It was a sticking valve.
Paid Heating Engineer to look at it and he found it wasn't closing. Suggested to buy a new one.
I took it apart first, operated it several times and now it works.
Checked microswitch and it was...
Hi I'm a newbie to the forum. I hope I can describe my problem so people can understand. Please bear with me.
We have a Worcester Danesmoor 15-19 oil boiler.
The system has developed a problem where the circulation pump is running all the time, even when everything else is turned off.
I...