Question about Honeywell Programmable Thermostat Heater
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Posted on Jan 02, 2017
The 2nd combination is correct (w/ jumper). Wire nut or tape the blue wire. The snow flake shows it's going into cooling mode after a 5 min delay. If the AC is not coming on then the problem may not be the thermostat. If you don't have 24VAC between the red wire and the blue one the problem is at the furnace or it's supply. If you do, then check for 24VAC between the blue wire and Y on the thermostat(after the 5min delay) - if it's there the thermostat is calling for cooling. To check the heat, switch the thermostat to heat mode and use the W(instead of Y) on the thermostat(after the flame stops flashing).
Posted on Apr 02, 2009
I have 2 identical units up and down. I have a Honeywell T8411R thermostat and Goodman heat pumps. The upstairs unit was low on refrigerant and was constantly freezing in the high heat and humidity of a NC summer. The blinking icon was telling me the unit had a fault and only the fan was running because the compressor was shut down. A few pounds of coolant fixed my problem. Check cooling tube coming out of the unit for ice, that means it is iced up all the way from inside the house to the outside. Also look inside your exchanger on the inside for ice.
Posted on Dec 27, 2009
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