Issues with Carrier Electronic Programmable Thermostat

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Old 11-25-13, 11:22 AM
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Issues with Carrier Electronic Programmable Thermostat

We installed Carrier furnace and A/C just one year ago. Recently, we had problems with the thermostat. We programmed the thermostat to wake up at 5:45 am in the morning to heat at 20C. At night, we set the thermostat at 17C. A couple of times, when I woke up in the morning before 5:45 am, I could feel the heat in the room and when I looked at the thermostat, it started heating already!

This morning, I had the same issue, around 5:00 am, it started heating already and I couldn't get sleep since the room is too hot (I prefer it to be nice and cool when I sleep.)

When I left home for work, the thermostat worked properly - showing heat at 15C as programmed.

What would be the problem?

Thanks.
 
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Old 11-25-13, 11:52 AM
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Just a wild guess would be that the interior temp dropped below your setting during the night. That would trigger a call for heat. While running, the blast of warm air may make you feel warmer than the actual temp at the thermostat.
 
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Old 11-25-13, 12:06 PM
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Forgot to mention, on the thermostat, it showed "Heat at 19C". It is weird since neither the sleep nor the wake up were set up at 19C!
 
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Old 11-25-13, 12:11 PM
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If the drop of the temperature triggered a call for heat, should the thermostat still show "heat at 17C"? And I think it could heat up to 18C but not up to 20C?
 
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Old 11-29-13, 07:01 PM
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You can turn off smart recovery to stop this.
Post the make and model of your stat.
 
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