Question about Honeywell Ct31a Heating & Cooling House Thermostat Heat Pump Great Sale
I'd also like to know how to lower the heat below 40f as it is not listed on the scale. also when I push the top control all the way to the left and there is a click what does that mean
Why would you want to set the thermostat below 40? They do that so people won't freeze pipes keep in mind if it's 40 upstairsit's probably near freezing in your basement if applies. Did you label the wires from your old Tstat or take pictures? You can't always go off colors. If this is a heat pump you may need a pro or you'll end up causing damage that may get expensive vs trying to save and doing it yourself.
Posted on Nov 22, 2014
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Posted on Jan 02, 2017
SOURCE: We have a Honeywell Chromotherm
I almost think you have no power source to the thermostat as if the power is off to the air handler unit (furnace), or the 24 volt transformer is bad. Could well be that the error codes are being powered by the battery.
Posted on Jul 24, 2008
Open the air handler. Locate the low voltage transformer. One side is 220 volts input. The other is 24 volts output. Take your VOM and touch the test leads to the input to verify 220v in. Then touch the other 2 leads to verify 24v out.
If you have power in and no power out, replace the lv transformer.
Posted on Jul 08, 2009
The DEFROST cycle is not engaging out side.EMG(electric only) will heat untill the outside unit melts and is looked at.The noise is the fan blade hitting the ice.
Posted on Jan 10, 2011
Testimonial: "Thanks so much. I had no idea that this was a common problem. My unit is one and a half years old. I appreciate your input very much. "
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