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Problems carrier edge thermostat

I just had a new carrier heat pump system installed with a Carrier performance - non-programmable EDGE thermostat (TTNRH01A). I am having a problem with the thermostat. During the day when in the cooling mode the thermostat and system works fine. At night, when the temperature drops, the AC cuts off as it should but the temperature (Actual Temp) that the Thermostat displays never changes. It continues to display the set temperature even if the ambient temperature drops several degrees. My HVAC installer replaced the original Thermostat, but the new one does the same thing. Has anyone else had this problem and/or know what the problem is?

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Posted on Jan 02, 2017

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