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Mend Creda CM921 Home Heating Systems

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Mend Creda CM921 Boiler Temperature System

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
CredaCreda CM921Heating, Home Heating SystemsBoiler Temperature System
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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