Question about Honeywell Programmable Thermostat Heater

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Dellllllllllluxe programmable thermostat chronotherm plus iv

I cannot get power to thermostat. i have checked the breakers and the furnace doors. is there any other thing to check. i'm sooo cold. patti

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Does your thermostat have batteries. What is the brand of furnace and model # . Does the furnace have a pilot light or is it electronic ignition. if you need heat you can take thermostat of wall and take wires that are labeled r and w and wire nut them together to see if furnace comes on. Make sure you turn breaker off to furnace first before you take thermostat off the wall. If furnace comes on after you turn power back on after you connect those two wires together then you will probally need new thermostat. If not you have a problem with your furnace. If you have any questions after you try this feel free to ask any more questions.

Posted on Jan 16, 2009

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Posted on Jan 02, 2017

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Home furnace comfortmaker blowing cold air


Home owner's manual? Troubleshooting section. Gas or electric?
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Sounds like The thermostat is stuck open, Keeping the water/coolant circulating too fast and not getting warm...

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I have a braeburn 3200 thermostat that has went blank on me yesterday. I have checked the fuse box, no tripped breaker, i have checked the switch on the furnace, its on, and there are no batteries. Im not...


If there are no batteries in the thermostat then the furnace was being used to power it. To make sure it is just a thermostat problem, you can jumper the power and heat wires that connect to the thermostat, usually red and white, or terminals R and W. If the furnace comes on, then you need a new thermostat. If that doesn't work, you have lost power at the furnace somehow. If the breakers are good, and the furnace switch is on, then you can have a bad door switch inside the furnace, a bad transformer in the furnace, or a bad circuit board if equipped. If there is a circuit board, they usually have fuses somewhere on them too that can blow. Just be sure to cut power off at the breakers before checking. Hope this helps and good luck!

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Turn The Fan Switch at Thermostat to on, If nothing happens you need to check the fuse disconnect at
furnace if it is equipped with one, if not make sure
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If all of that is ok, make sure the blower door is secured, when it is secured it makes up a door switch which transfers all the power to the control
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If you dont think its the blower door switch, remove the door and tape over the switch to simulate that it is closed. Check for 24 volts between R and C where
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If the main fuse or breaker was blown or tripped, check to make sure the blower motor will turn by hand.

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You may have the furnace running the power to the thermostat. To check, you can see a terminal on the back of the thermostat that is marked ''C''. If it has a wire ran to that terminal, it usually means the furnace provides the power to the thermostat. If this is the case, you may have flipped a breaker or blew a fuse inside the furnace (depending on the model). You might try checking the breaker first since that is a common thing, then check the furnace and see if it has power, you might try flipping the switch ( if available) or flipping the breaker to reset it, it sometimes works depending on the problem. If it is a fuse, they are usually 4 amp fuses. The only other way to troubleshoot to see if it's the thermostat, you can take the Red wire and the Green wire off of the terminals on the back of the thermostat and carefully touch them together and see if the fan comes on, it's basically hard wiring the furnace fan motor to have power, if it doesn't come on, then the problem persist in the furnace. Hope this helps or at least sets you in the right direction. Good luck!

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