Is frost stat on OFCH system faulty

newseeker1

Registered User
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206
Hi
Were the temps low enough overnight Friday Night Dec 19th and into Sat Morning Dec 20th to cause the frost stat on my OFCH system to kick in

We didn't have the timer programmer turned on for overnight or this morning to heat either the rads or the hot water

However when I got up I noticed that the boiler was running. Rads in house weren't hot and water wasn't hot

When went to boiler house noticed that the blue light on frost stats was lit and the pump was very hot

Frost stats is set to the lowest setting it can be set to 5 degrees

I not sure if the stat is faulty. I don't think the valves for hot water and the rad heating are sticking as over course of today - when system running can hear the audible noise for them closing off

I based in North Kildare. Was it cold enough over night last night for the frost stat to kick in or is the stat faulty

Thanks
 
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