Question about Honeywell CT87N - Round Heat/Cool Thermostat

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Ct87n thermstat is hooked up and the heater is on because i smell the heat but it is not blowing out the vent

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The blower motor isn't running. At the thermostat, red wire to the R terminal white wire to W terminal.or W2 If the blower still doesn't run It's probably not the thermostat.

Posted on Nov 10, 2014

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Honeywell ct87n wiring schematic


These are color codes wires for terminals that control fan relay,start,stop, temp-up/down ect. Also you can trace out those wires, Where they are going and what terminal on the wiring schematic they control.

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I am quite certain you have a leak in the heater core and you are smelling the leaking antifreeze. Check the coolant level for loss and look under the car where the water from the airconditioner normally drips.
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The heater core is going bad in my blazer, but it still blows hot air. When I turn the control to switch the heat from vent to defrost or floor, it still blows out of the vent. How do I fix this?


THAT HAS NOTHING TO DO WITH A HEATER CORE IF CORE IS GOING OUT IT WILL LEAK THATSOUNDS LIKE AN ACTUATOR ACTING UP OR VACCUUM LINE LEAK BEHIND DASH

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My heater does not work,inside of the panel show well, botton up,


I'm not an expert, but I took my 2000 Lincoln Nav to the shop and they told me the issue is that my accuator is not opening properly to allow the heat to go through; therefore, it's overheating. That's why I can feel some heat on the front in the back. All vents, including the rear vent blows strong, but they blow very cold.

Unfortunately, I'm also having an issue with my engine intake manifold or intake gasket being cracked causing anti-freeze to leak out of my tailpipe and smell badly through the vents - even on defrost - so until that's fixed, I'll never have heat.

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Heater smell when AC comes on...


The fan that blows the air blows through the heater coils before it blows through the A/C.As long as the heater doesn't come on, there is not much that can be done. ZCooking the attic room will be a problem because it is the heat rises thing, and on top(literally) of it all, the roof is radiating heat.

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NO HEAT FROM HEATER , FAN BLOWING OKAY , BUT NO HEAT , UNTIL YOU GO UP A HILL , THEN IT BLOWS HOT , FOR SHORT TIME THEN GOES COLD AGAIN


This sounds to me like the thermstat is is a low temp one, I would check and see what temp it is and replace it with a 195 degree thermostat. either it is faulty or as I say it is a low temp one. One other thing to check is that the gate valve on the heater vent / hoses is openning properly, and not stuck. Good luck and remember to rate all solutions that you get on FixYa, thanx.

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