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Goodman gmpn 100-4 blinks once and will not start

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These units are self diagnostic,, find the sticker located on the unit for the code diagnostics! T Y V M!

Posted on Dec 14, 2009

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Posted on Jan 02, 2017

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


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

Jan 04, 2013 | Goodman GMS90703BXA Heater

1 Answer

I have a goodman series gmn,gmpn, gsu furnace with the sign on the front that reads reliable 9200. it was installed in 1998. can you tell me what the btu's on this furnace is?


Hello Hurley I need model # for that.If you take the front top cover off there is a sticker on the side or bottom with the info on it.

Jul 29, 2010 | Goodman GMS90703BXA Heater

1 Answer

Ihave a goodman GMPN furnace. The blower will not work, even in the fan on position. If I put in heat position, the burners ignite, but goes out. The module blinks 4 times showing open limit. The blower...


Maybe not! there is a limit switch that has opened not allowing power to pass and start the furnace. You will need to tale a Ohm meter and follow the wires thru any safety switch. In your case, it may be the thermo-disc near or over the burner box. Jump it out to test it. Now why is your blower not working (which could have been the reason why the thermo-disc opened)? Once you find which safety switch is open and you have jumped it out, take a jumper wire and jump between the R and G terminals on the circuit board. This should start your fan. If not, either the fan is stuck, the fan motor is bad or hopefully noy; the circuit board is bad.

Jan 18, 2010 | Goodman GMS90703BXA Heater

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

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