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home Fix label Heating label_important Home Heating Systems category Creda

Problem with my CM 921?

My CM921 has ben set to come on twice a day 7.00am to 9.00am and 5.00pm to 9.00pm. 17. degrees lowest and 20 degrees highest.
why does the boiler fire up outside these times?
My cm921 is 7 years old does that have any reason for my problem?
Irene, December 2016
home Fix label Heating label_important Home Heating Systems category Credadone
It will have nothing to do with the age of your boiler.

It may have something to do with cold weather - some boilers have a frost-stat fitted to fire up the boiler at about 4 degrees C to prevent any pipes from freezing up.

Good Luck..., December 2016
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