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Heater won't come on

Induced draft motor went bad replaced it and now it comes on but nothing else happens. it's an old amana heating and air unit outside

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Re: heater won't come on

Is it pulling in the the draft proving switch ,is your vent pipe restricted was there a washer behind the old one that would restrict the amount of air it pulled out of the chamber

Posted on Dec 29, 2007

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My carrier model # 48ss-036100331 induced-draft motor will not start

On some of those inducer motors there is also a capacitor in the blower compartment on the left side of the burner section. It is possible that if you have 230v coming from the board CM terminals and if the motor is new maybe you have a bad capacitor in the blower section. Follow the wires to the capacitor and check microfarad reading to that capacitor. Caution there maybe 2 in this area but one is for the indoor blower motor and the other will be for the draft motor. The blower capacitor may be somewhere between 10 or 15 mfd but the draft inducer capacitor will be around 3 mfd. hope this helps

Feb 19, 2016 | Carrier Air Conditioners

1 Answer

Amana 90 furnace won't ignite. Inducer fan runs for 30 seconds then shuts off and nothing happens. Try to turn fan on at thermostat and nothing happens. Ac works fine.

Most likely one of two issues is occurring. Either the inducer fan is not providing enough draft because it is either spinning too slowly or the impeller is damaged, or the pressure switch that the inducer motor air flow is supposed to activate is not operating properly. If the pressure switch fails to activate, the furnace will not open the gas valve and fire the ignition believing that there is not sufficient draft the vent the combustion gases.

Oct 17, 2015 | Amana Air Conditioners

1 Answer

How do I wire a induce fan motor

Induced fan motors on older units are wired through the high limit safety on the stack - in series. When the furnace calls for heat, the induced fan motor comes on and after a time the furnace will light.

Older units have a temp switch in the stack that rotates to bring on the burners and blower motor. . When there is a call for heat, the induced draft fan motor comes on and then the burners will light.

After the heat exchanger is warmed up the limit switch will bring the blower motor on. That's basically how it works - there are two circuits - one for the induced draft motor and the burners and the other for the blower and high limit.

New units have a plug on the board you just plug in.


Oct 04, 2014 | Air Conditioners

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Amana Distinctions 5 ton premium R410A system inducer draft motor short cycling and fan does not run

Amana distinctions furnace is the top quality furnace and I would you recommend to get professional technician help for that. You may call in Toronto at 905 201-1293, Clean Air Heat is there to help you out.

Jan 01, 2013 | Amana Distinctions 95% Gas Furnace...

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On heating the unit go to a three cycle try on the burner then shot down. The blower will come on but the burn will not. Replaced the flame sensor but stayed the same

Does your unit have a induced draft motor? if so is it coming on when thermostat is calling for heat. If not I would replace it. Next I would check spark or hot surface ignitors. If induced draft motor is working but ignitors are not then replace them. If you get to this point and you don't get pilot or main burner I would replace the control board. As a last resort I would change gas valve. I hope this helps you and god luck. Thanks

Nov 17, 2010 | Air Conditioners

1 Answer

GOODMAN Air & Heating unit installed. After one and half year the heater would not egnite. Exhast fan starts but no ignition? Can anyone help?

either the pressure switch is not closing (probably clogged) or the ignitor is bad.

Verify that 24 v is coming out of the pressure switch, after the draft inducer motor comes on, then look for the ignitor to glow.
Do you see the glow from the ignitor? If not, replace it.

Jan 30, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Induced Draft Blower Not Blowing- 3 Blinks on LED

Your doing well just right. When the call for heat is on the draft motor gets a call from the board to come on. When this happens if no voltage is present at the motor then you ahve abad baord. Replace it.

Nov 28, 2009 | Air Conditioners

2 Answers

Induced draft motor

The inducer motor is what takes the cabonmonoxide out of the house from the unit and should not be bypassed

Mar 08, 2009 | Carrier Air Conditioners

1 Answer

I have a central heater. it will come on and worh fine, by this i mean the draft induce motor comes on, then the glow igniter will come on then flame will come on but after 10 minits or so it will stip the...

sounds like the filter inside of the unit may be dirty and or the vent cap could be partially blocked causing the flue gas to build upo until the unit tripos on the high limit saftey

Dec 16, 2008 | Air Conditioners

2 Answers

Janitrol/Goodman GMP075-3 Draft Inducer Fan Won't come on

most forced draft fans are powered by 120 volts . close to the fan is usually a plug that unsnaps. create a call for heat after turning off to clear safetys and see if your getting 120 to fan on initial call for heat. if you are then fan draft motor is bad, usually sold as an entire assembly replace exact as it came out. sequence of operation is..... stat calls for heat via common and white wire to furnace , 24 volts. ......board sences call and sends 120 volts to forced draft ........ motor runs and creates pressure on proofing switch,....... switch closes 24 to board and tells it draft fan is on......... board then energizes ignitor,....... after ignitior glows gas valve is opened and burner lights ........ either ignitor or seperate sensor rod tells board the burner lit........ and a few minutes later the fan comes on and hot air is blown out. if a step is missed or doesn't proof the furnace either trys up to three times to light or locks out. turning off power usually resets safetys and it will resume attempts to lite normally.

Oct 25, 2008 | Air Conditioners

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