Thermostat stops lowering reading unless AC is off

My Hunter thermostat (Model 44110 ) sometimes does not lower the temperature reading when the actual ambient temperature is already lowered by the AC it controls. I put a Radio Shack digital thermometer above the Hunter thermostat. For instance, the thermometer already shows 82 F but the Hunter thermostat still shows 84, so the AC keeps running. What's strange is that if I set desired temperature to higher than the display temperature, to 85 for instance, the AC stops, and surprisingly, the Hunter thermostat starts to drop its reading, eventually to 82 (if the outside heat doesn't heat the house up that quickly). Why does the thermostat stop lowering its reading unless the AC is turned off (or the desired temperature is set higher)? It happens quite often. The battery is not low. Thanks for help.
Yong Huang Houston, TX
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Nuff said...
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Hunter makes great ceiling fans, but their thermostats suck
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Yong Huang wrote:

One hung low;
The thermostat will read higher to allow a longer cycle period. It's attempting to limit the cycle rate to under 6 cycles per hour. The reading 'high' is anticipation. All thermostats incorporate some form of anticipation to limit the cycling during both the heating and cooling cycles. Some display a 'higher' temperature than it really is. Some don't but still incorporate the cycle limitation.
--
Zyp



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