Question about Goodman GMS90703BXA Heater

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If you want some help on this I will need some more info. Does the unit shut off completely? does the fan run after the burner shut off, or is off simultaneously? do you have a digital thermostat or the old type?

Posted on Dec 05, 2007

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What is the cause of rold out flames on gmpn 120-5 furnace

There can be many causes of this. First check to be sure you are using the correct gas type (natural gas or propane) for the heater. It may need to be converted to the correct gas type.Then check to make sure your venting is not blocked (bird nest, etc). Sometimes it's a soot build-up inside the chamber and flue, which can be caused over time due to one of the above problems I mentioned.

Mar 01, 2015 | Heaters

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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 Heaters

1 Answer

My Gibson Furnace clicks on but no heat comes out.

After four years I do not thing you have an effective warranty even if the company still in business. you need to open it first and clean it from any builod up dust and check the switch to see if it is working (thermostate)

Nov 08, 2009 | Heaters

1 Answer

Wall furnace shuts off after about 10-20 mins

sounds like its not venting likely is shutting off on a "Spill switch" or "Vent safety switch"....check the vent/chimney first off.....also the pilot could be dirty..,..a lazy pilot tends to blow out easily....pilot should be blue and sharp,,,big enough to fully envelope the thermocouple

Oct 30, 2009 | Heaters

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 Heaters

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

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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