Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater
We have a honeywell thermostat. When we turn the heat on, the words, "heat on" blinks. Then, we hear a buzzing sound, sort of like an alarm and the panel on the thermostat says, "aux heat on".
You most likely have a heat pump, the aux heat (usually electric) comes on anytime the room temperature is 4 degrees below the thermostat setting. Does the buzz go off when the aux heat lite goes out? If the aux heat does not shut off then the primary heater (heat pump) is not putting out enough heat to satisfy the thermostat. I need a little more info. Do you have a heat pump? Is it working?
Posted on Nov 26, 2008
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Posted on Jan 02, 2017
Sounds like it could be a effiency function to warn you that the heat elements are on. Check your thermostat manual and see if you can turn this feature off. If this is not a feature then the thermostat may be wired wrong or something in the circuit may be trying to short out.
Posted on Jan 04, 2010
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