boiler keeps firing up

[liamgsxr]

Hello

I have a problem with my combi, it keeps turning itself on heating up the radiators even though the programmer has not been turned on, is this a problem with the boiler or the room stat.
Many thanks Lee

 

[namsag]

More than likely a stuck microswitch on HW side or the pin on divertor has stuck out and not returning away from the switch.

 

[Agile]

It could be all sorts of things! The most common is a false demand for DHW.

However, as you did not bother to tell us which make and model then we cannot use out product specific knowledge to advise you!

Tony