Question about Goodman GMS90703BXA Heater

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I have a goodman gmpn 100-4 furnace that gives off a puff of flame when it lights

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Remove burners and dump out rust and dust then put burners back in and restart gas preassure in burners blocking burner ports with rust and dust

Posted on Jan 13, 2013

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: I have a goodman gmpn 100-4 REVB furnace that will not stay lit

If the igniter lights the burners the ignitor..... is not bad. Its like a light bulb.... it works or ot doesn't.
You are describing a dirty flame sensor. Dishonest contractors will sell you a new ignitor but clean the flame sensor when the are installing the ignitor. It is located at the opposite end of the burners than the ignitor. It has one wire going to it. Remove it and clean the rod with a piece of fine grit sandpaper. this should be done every year before heating season.
Good luck

Posted on Mar 29, 2009

  • 89 Answers

SOURCE: GMPN 100-4 furnace. Blower motor runs when not calling for heat.

The board is bad. The unit thinks a flame is present, so it tells the blower to come on. Replace the board.

Posted on Oct 08, 2009

  • 2 Answers

SOURCE: I have a goodman gmpn 100-4 furnace. It will not

Clean the flame sensor with a scotch brite pad....gently and replace it.

Posted on Oct 03, 2010

  • 1 Answer

SOURCE: No heat, trouble shooting light has continious flash.

Furnace will start then sec later it will turn off. Then you can here that its trying to trun on.

Posted on Oct 04, 2010

heatman101
  • 43501 Answers

SOURCE: I have a Goodman #GMPN

Hi,
Is the red light just constant on or is it blinking a code? If it is blinking a code it should tell you what is wrong...
If the red light is constant on then the board is bad...
But also check the grounding of the furnace, the polarity of the electric coming in, and the grounding of the burners to the board...

heatman101

Posted on Apr 19, 2011

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2 Answers

What's your problem? goodman furnace lights, burns 10 secs goes out


Hello,sounds like you have a dirty flame sensor. This is a metal rod on the oppositenside of the hot surface ignitor. turn off power to the furnace and remove the flame sensor, then use steel wool and clean the flame sensor and reinstall. Next turn back power to Furnace.

Nov 18, 2011 | Goodman Heating & Cooling

1 Answer

I have a goodman gmpn that the middle burner has a little bit of flame rollout it kicks the flame sensor switch after about 1-2 minutes then it will not cycle back on. The flames are perfect until the main...


Unfortunately that means there's a hole in the heat exchanger, particularly in that cell of it. When the main blower comes on the air is pushed into the heat exchanger, causing the flame rollout. A heat exchanger crack or blowout is usually what condemns a furnace for good. Goodmans however, have a lifetime warranty on their heat exchangers, so you'll probably be able to find someone to replace it pretty cheap, or do it yourself for free.

Nov 04, 2011 | Goodman GMS90703BXA Heater

1 Answer

Model GMPN furnace: burners light OK, but shut off in less than a minute w/o main circulating blower coming on.


The unit is not sensing a flame. A flame sensor is a piece of metal rod about 1/8" in diameter which tells the unit it is burning. take it off and clean it with steel wool. if that doesn't work you'll need to replace it

Oct 09, 2009 | Goodman Heating & Cooling

1 Answer

GMPN 100-4 furnace. Blower motor runs when not calling for heat.


The board is bad. The unit thinks a flame is present, so it tells the blower to come on. Replace the board.

Oct 07, 2009 | Goodman Heating & Cooling

1 Answer

I have a goodman gmpn 100-4 REVB furnace that will not stay lit


If the igniter lights the burners the ignitor..... is not bad. Its like a light bulb.... it works or ot doesn't.
You are describing a dirty flame sensor. Dishonest contractors will sell you a new ignitor but clean the flame sensor when the are installing the ignitor. It is located at the opposite end of the burners than the ignitor. It has one wire going to it. Remove it and clean the rod with a piece of fine grit sandpaper. this should be done every year before heating season.
Good luck

Mar 28, 2009 | Goodman GMS90703BXA Heater

1 Answer

Erratic goodman GMPN 100-4


sound like you have a bad fan motor

Dec 04, 2008 | Goodman CPLE24-1 Air Conditioner

1 Answer

No heat, trouble shooting light has continious flash.


There is a vacuum sensor on most units tied from the exhaust gas fan to the sensor. Does the unit try to start? If the unit's exhaust fails to pull the switch it will turn off after about 30-45 sec after starting. "IT" thinks it's not exhausting and stops to keep from overheating. Do you have this exhaust fan and rubber hose to sensor? Can you see if that fan is turning on start?

Nov 08, 2007 | Goodman GMS90703BXA Heater

3 Answers

No heat, trouble shooting light has continious flash.


Try replacing the filter. Low air flow will allow the furnace to overheat. Sounds like a simple answer. Wish I had tried it before buying a flame sensor and controller. Live and learn I guess.

Nov 16, 2006 | Goodman GMS90703BXA Heater

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