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Just installed a honeywell thermostat (CT87N) fan runs but compresssor does not

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  • dllambe May 02, 2010

    inside fan

  • Brian Niten May 11, 2010

    I just want to make sure which fan you are talking about, the inside fan or outside fan.

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  • Master
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Make sure you have the green thermostat wire hooked to the G terminal. You can also place a jumper between R and G to see if the fan will come on once the green wire is connected.

Posted on May 02, 2010

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1 Answer

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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Honeywell ct87n wiring schematic


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The compressor fan come on; I can hear a clicking (the compressor trying to click on, then immediately shut off. It will contiula doing this as long as the thermostat is set for the ac to come on. I...


Possibly a bad run capacitor, have a service tech test it and replace if it is bad. That clicking you hear is the internal overload in your compressor clicking off on high heat/amp draw and then cooling down and resetting itself.

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I am wiring a honeywell thermostat model number ct87n if I select fan on the fan runs when out on auto /heat nothing but if I put on auto / cool and adjust the dial to a low setting the hea comes on....


there is it all depends on how many strands of wire are in there, they start at 2 wire and go to i think 8 wire and maybe more.
The wires are as follows:
1. red = power to stat.
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3. blue or yellow = ac
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w2 = 2nd. stage heat.
i am on line if you have any questions. wally

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I have a heatpump wired as in diagram fan works a/c works but not heat what do i do?honeywell CT87N


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Why can't i get my thermostat to work


HONEYWELL WEBSITE:
Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions

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I have just purchased a honeywell ct87n, could you please provide a schematic in order to connect it properly. I had someone install a honeywell digital thermostat several months ago, he did not tag the...


G to the manufactures webpage and type in model # and look upspecs . r- red y-cool w-white g-fan .. The red should be connected to rh--rc already by a jumper wire.

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