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honeywell CM67ng temp controller
- Thread starter jacrien
- Start date
Probably because Optimization has been turned on.
If it has been turned on you need to set the first time to when you want the house to be up to the set temperature, e.g when you get up. The thermostat then calculates when the boiler needs to come on, varying the time according to how cold the house gets overnight.
If you don't have the instructions for your thermostat, you can find them Here
Optimization is parameter 15:Op, and is set to ON by default.
Thanks for the quick reply. Now I know what is happening I shall leave things as they are.
So you actually get up at 6:00am and want the house warm by then? If that's not the case, set the first time to when you want the house up to temperature, say 7am or whenever.
Two and a half hours is a long time to heat a house. Have you considered improving the loft and wall insulation? There are plenty of special deals available at the moment - some free.
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