Radiators piping hot to touch....any ideas

[andjos]

Hi folks

Hoping for a bit of help/advice.

I have a Worcester 24i RSF combi. When the central heating is on the rads are piping hot even on the lowest dail setting (no room stat fitted). I also hear at times a clicking noise from the boiler (relay clicking).

I therefore changed the CH thermister thinking this was faulty but I still same senario of very hot rads. The system has cut out a few times but seems to reset itself.

I am thinking this may be a PCB fault.

Anyone had a similar problem like this and resolved it?

Any help or advise would be gratefully received.

 

[seco services]

cause they are going to be piping hot with no room stat

 

[gas4you]

How about the boiler stat its self?

 

[andjos]

The stat is located on the pcb of the boiler. When turned it does click the boiler off and on. I am wondering if a faulty/sticking modulating gas valve would cause these symptoms.