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Blower motor turns on then shuts off after a minute on my goodman furnace

I changed the starting capacitor out because the fan would not start, it just made a humming noise like it was trying to start. Now it comes on, but only for a minute, then it shuts off, then starts the cycle all over again. I noticed the motor is getting hot to the touch. I did check some voltages on the board. I have 28 vac from the thermostat. I have 120 volts on the board.

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  • Goodman Master
  • 1,033 Answers

The motor is shutting off on it's overload. Make sure the capcitoris the proper voltage and microfarad rating. Also, make sure two speeds are not hooked up at the same time to the motor, for example if there is a motor lead on the heat terminal, there should not be one on heat/cool terminal. If all checks out good younwill need a new motor

Posted on Jan 01, 2013

  • Arlan Jordan Jan 01, 2013

    Thanks Robert this does help. I haven't changed any wiring. The blower seems to be moving at a low speed. I think it has a high speed, but I am not sure. It puts a decent amount of air out when the fan turns, but I think it should be higher. Also the motor gets so hot, that it will burn your hand if you touch it. When you mentioned the wiring, did you mean the wiring that goes to the control board?

  • Robert Jan 02, 2013

    Yes there will be motor leads that attach to the control board

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Posted on Jan 02, 2017

SOURCE: goodman ac/gas furnace unit mdl. # gmp075-4

i HAD THE SAME PROBLEM, TURNS OUT IT WAS THE FLAME SENSOR, CLEANED IT, AND ALL WAS GOOD

Posted on Dec 13, 2007

  • 1003 Answers

SOURCE: Goodman GMP125-5 Air Handler

REPLACE BLOWER MOTOR

if its spinning free until motor is energized motor may have bad armature or brushes.

If you energize blower and manually give fan motor a spin will it start if so replace cap.

Posted on Jan 23, 2008

  • 1 Answer

SOURCE: Heater blower motor cycles on and off (frequently). I have a class 2 LR95329 Honeywell Thermostat

I had the same problem with a Coleman. The problem is the blower relay. You can find this at http://mobilehomerepair.com

Posted on Oct 21, 2008

machtcl1
  • 61 Answers

SOURCE: Goodman furnace GMPN080-4 Getting 4 RED blinks/Open Limit Swtch

You have a limit switch located in the furnace (a little bigger than a dime and located near the center of the front panel, sometimes the switch is mounted to a small fiberglass board) . There will be two wires going to it. They sometimes trip so often that they fail to automatically reset(due to dirty filters or undersized ductwork). You can SHUT OFF POWER TO THE FURNACE, then remove the two screws holding the switch in the furnace, pull the switch out of the furnace and tap on it and wipe it off.
The switch may work a few more times but should be replaced with the same size and type. You will see some rating printed on the switch somewhere. Write down all the numbers and get a replacemet from a furnace/AC supply house. If you have a meter and know how to use it you could check the switch for continuity.

Sometimes just a tap on the switch will get it going. There will also be a couple of rollout switches that could be tripped. They have little buttons on them to reset them. If they trip it may have other issues to be solved.
Hope this helps!
Matt

Posted on Feb 01, 2009

  • 1 Answer

SOURCE: goodman gmnt100-4b wont ignite

I had the same problem. I had to remove a return air duct filter that i had installed and it worked just fine. The system needs plenty of air flow to operate.

Posted on Jun 17, 2009

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