Question about Goodman GMS90703BXA Heater

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We have a goodman furnace , model gmp or gmpe. we can not find where the filer goes. the previous owners told us there was not a filter inside the furnace, only 2 cool air returns in the ceiling that have filter. please help!

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

Therinnaiguy
  • 1420 Answers

SOURCE: Goodman Furnace GMP 050-03

You need to check for 24 volts across the gas valve as the ignitor glows. If you get it, it is a bad gas valve. If there is no voltage or strange voltage, replace the control board.

Posted on Dec 10, 2008

  • 3600 Answers

SOURCE: How to fix twinning problem for a goodman GMP 100-4

Call AAA back it should be warrented if they worked on it frst don't touch it or you lose your warrent, it does sound like the thermal bulb is not in the flame so call them back fist then let me know post here and I will try to help you if they do not sove the problem, you should have a work order they gave you when they did the repair. Hold on to it.

Posted on Oct 09, 2009

Testimonial: "The thermal bulb would cause the twinning light to come on."

james3751
  • 614 Answers

SOURCE: goodman gmp 125-4 gas trouble code

Rewire to schematic specs and check po;larity of transformer. Rus

Posted on Nov 04, 2009

  • 232 Answers

SOURCE: I have a goodman GMP 125-5 furnace. I have

sounds like the primary limit typically behind the gas valve its larger then the others, rectangle in shape with 2 wires going to it. be careful if your bypassing limit this can create a very hazardous condition

Posted on Nov 06, 2009

SOURCE: how to change fan speed on a goodman gmp 100-3

Usually you can find the control board on the lower part of the furnace. Turn the power off and remove the
doors. This board is usually located directly in front of the blower motor.

On the control board locate the terminals marked heat/cool/park and Park Lets say the Heat Terminal
has a red wire attached to it and you want a higher
speed.

Red is uasually low speed, remover the red wire from
heat terminal and exchange it with a wire attached to
a terminal lab eled park. Black is usually high spped

Posted on Jan 02, 2010

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1 Answer

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I have the EXACT same problem. Cant find the filter and no manual came wit hthe furnace when I bought hte house!!! AGH!!

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1 Answer

I can't find any info on my Goodman furnace.It's a GMP and the model number on the front of it doesn't match any goodman model numbers G2FD036S17A......I'm lost


Take the top panel off and on the inside of the left side of furnace as you are facing it should have a nameplate rating.

The nameplate rating should have the model number and serial number of the actual unit that you have.
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I have a goodman GMP 125-5 furnace. I have


sounds like the primary limit typically behind the gas valve its larger then the others, rectangle in shape with 2 wires going to it. be careful if your bypassing limit this can create a very hazardous condition

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