Question about Honeywell Power Humidifier: Furnace Humidifier/ Humidifier

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Furnace does not want to ignite even if you turn thermo up 90, blower will not turn on auto from thermostat an thermostat is new. However it does turn on at the furnace.

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I would guess from the info provided that you only have two wires going to your thermostat which would explain why the fan switch doesn't work on the thermostat. You can bypass the thermostat as a first step in troubleshooting. After that it depends on the type of furnace, standing pilot or electronic ignition...

Posted on Dec 26, 2009

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T-stat wired wrong

Posted on Oct 04, 2009

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It sounds like the thermostat was installed incorrectly..... There is an industry standard color coding of wires, but unfortunatly this is not always followed. The format is Rh and Rc are a red wire (these terminals may be jumped together if you have gas heat), which is 24v hot, W is a white wire, which is 24v common, Y is a yellow wire, which is power to the outdoor A/C unit, and G is green, which turns on the high speed fan. I must assume that your old thermostat would turn the fan on, since you mentioned it above. Your best bet is to check at the furnace to see which wires go to where
Please Note that if you have oil heat the jumper between Rh and Rc should be removed. Rh is power for the heating circuit (usually red), and is connected to the oil burner primary control. Rc is power for the cooling circuit (usually blue) and is connected to the fan relay. I hope this helps

Posted on Jun 18, 2009

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