Which Stat is Duff?

[ManxMax]

Hello Chaps

I have a Trianco Eurostar Combi 70 that was a so-and-so to get sorted last year (thanks to all that helped with advice on that), but I now have a problem with the Boiler Limit Stat cutting in after a few minutes and I have to wait for 10-20 minutes before I can press the button and fire it up again. If I run the HW it will stay on - while showering and running a bath - but will then trip a couple of minutes after I stop running it. It also seems okay if I run the CH, but that is probably because the circulating water is keeping it cooler.

Question is: is it the Boiler Limit Stat that's faulty, or is it doing its job because another stat is allowing the tank to overheat?

Hope someone can help.

Manxie Max

 

[Agile]

I would probably measure the actual temperature of the boiler at the high limit stat to see if its actually tripping at the rated temperature.

I expect that it is but there could be several reasons why the boiler is exceeding the normal operating temperature.

Tony

 

[ManxMax]

Thanks Tony, I'll give it a go.
Cheers

I would probably measure the actual temperature of the boiler at the high limit stat to see if its actually tripping at the rated temperature.

I expect that it is but there could be several reasons why the boiler is exceeding the normal operating temperature.

Tony