Question about Goodman GMS90703BXA Heater

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Heater not staying lit

My heater has an auto light and it is lighting you can see the flame going into the furnace then it stop a few seconds later it starts up again with the same result. The fan is blowing and its lighting up it just wont stay lit and blow heat . any advice

I found 1 part # GMP075-3 and serial # 9405083641 On a friends Goodman Heating Furnace. The Pilot will light but the furnace will only stay lite for a few seconds. He had accidently grounded out the unit while trying to plug it in. I pushed the reset button and it began working but now will only do the procedure I have mentioned.

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  • Anonymous Mar 02, 2008

    The problem with my heater is the igniter will lite but will not stay lit for more than a few seconds. Sometimes it will stay lit and sometimes it will not. Please get back to me with any suggestions you may have. Thank you.

  • hopefaulk Dec 11, 2008

    the pilot will not stay lit on our furnuce for our radiant heater we have baseboards and downstairs we have the floor heater

  • Anonymous Dec 22, 2008

    working with swank heater everything goes through the steps, the unit fires up but wont stay lit for more than a few seconds

  • w_emslie Apr 19, 2009

    furnace starts normally, burners start then inductor motor and burners go out only to repeat start sequence over again.

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My furnace pilot light is on but the burners will go off when we put the thermostat on auto. if we keep the fan on the burners will light but turn off the fan and and the burners go off

Posted on Jan 18, 2009

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You have a low voltage (24) problem. I can be a number of different things. You will need a volt meter. Start at the thermostat. Go to the control board, then the temperature delay, thermal overload, ending at the gas valve. Check for power going in to a part and it should go out. Check for good wire connections. You really need to know what you are doing or else you will be just changing parts. Unless you get lucky this could get expensive. One tip I can give you is to by-pass the delay switch. Just connect the wires together and see if that solves the problem. By the info you gave I don't think that is the problem, but you never know. I would lean towards the board, or the thermostat.
The other guy, check the same and the power into the ignitor box and the high voltage coming out. and the flame sensor. Be careful with the ignitor it packs a punch!

Posted on Mar 02, 2008

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