Question about Honeywell CT87B ROUND HEATING&COOLING MECHANICAL THERMOSTAT - WHITE Heater

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My Heater Will not shut off

Summer is here, and so is the heat... and unfortunately, my heater as well. Thankfully for box fans, and a breaker switch though.

Anyways, as long as the breaker to the furnace is on, the heater is on, doesn't matter if I set the thermostat for Cool, Fan, or heat, it stays on. If it is on Cool though, the A/C will come on, but the heat stays on with it.

I got a new thermostat, I'm sure it is hooked up right, I have looked everywhere online to make sure, and it all matches up.

If you can diagnose the problem. Great! That will help me alot. If you can find a way to shut off the heat and only the heat, then thats Wonderful!

At least If I can find a workaround, I can then do that for a few months until I have the money to get a professional to come out and look at it.

Thanks In advance, hope to get an answer very soon, supposed to be HOT next week,
-Jon

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  • 38 Answers

Probably your heat sequencer is stuck open, and there is nothing you can do except replace it. Call a company and they can do that for you

Posted on May 10, 2009

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