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Furnace piolot on, gas on, turned thermastat on and furnace is humming did not start up.

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Fanmotor is bad, change it out, thank you very much!

Posted on Sep 13, 2008

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Posted on Jan 02, 2017

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My heil n9mp2 isnt working just hums


is the flame igniting and then cutting off? on a gas furnace, the induction fan motor(draft motor) should start first (if the furnace is so equipped), then the flame, then the blower. if you have an induction motor (flue gas exhaust mmotor) this may be your problem (the induction motor isn't starting), if your unit doesn't have one, have you checked to see that you have gas? finally, the capacitor on the blower motor may be causing the motor not to start.

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Cant figure out how to relite my furnace


on the bottom of the unit there is an access door remove it and behind it you will find a gas valve and a pilot find the piolot......turn off the gas valve and move the selector to piolot depress the switch and at the same time place the flame from a log lighter onto the pilot light after this lights turn the gas valve to run and the burner should light.

Mar 03, 2011 | Empire Direct Vent Wall Furnace;...

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Furnace lights right up, but will not shut off with on-off switch or thermastat switch? checked out the thermastat switch and that works fine.


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I turn my thermostat to the HEAT position, I hear the Thermostat click and the Furnace begins to hum but no air comes out of the vents. Also if i turn the fan to the ON position air will come out of the...


need to go to furnace and watch it...if your hearing a hum the enducer draft motor may have failed...it should start first if there is no fault codes...reset unit by unplugging furnace or in some cases turning power switch off...turn thermostat on heat and watch unit ..the small enducer draft motor should start first the a ignitor glows and the should light...goodman units have a control board with a light on control board when it fails should flash a code and on the door or inside on lable should give you what that code is...hope this helps good luck

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When the thermastat turns on the furnace doesn't ignite the burners and the pilot light is lit. Everything appears to be normal, fan runs, thermastat appears to work properly.


You may have an open limit or a bad gas valve. Check and see if you get 24 volts to the gas valve, if you do then you gas valve has gone out.

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Thermastat and furnace


you should have 24 volts between yellow and white wires at the stat when the stat is set to heat and set as hot as it will go. burners should light first then 3 to 5 minutes later the fan motor should fire up. if burner doesn't light check the wires going into the top of the gas valve see if you have 24 volts arriving there from the stat. if you do then the gasvalve is probably bad. you can bypass the action of the stat by jumping red to white on 90 percent of the stats made and in a few seconds the gas valve should click open gas flow to main burner where pilot ignites it. another easy check you can do is flip stat fan switch to on. fan should come on at once. if not then you have either no high voltage to unit or no low voltage ( as in a bad transformer). if the fan comes on you know you have high volts and low volts...by cover i assume you mean the decorative cover but there second cover with the mercury bulbs and all is still there. if you have only the bare subbase then new stat time. sounds like an old furnace if it has a standing pilot, it should be checked for cracked heat exchanger by a pro with a n electronic carbon monoxide detector. NOT a diy item due to the real danger of co poisoning.

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