Question about Goodman GMS90703BXA Heater

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My heater works fine when its a little cold,when its freezing outside it heats for a couple of airs then it would come on and off fine but with cold air blowing.i looked at the codes it blinks 6 times which says something about the rollout switch what should i do

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  • lilshortpr Oct 07, 2009

    i hear i should replace the whole furnance cause it costs alot to do a heat exchanger but my heater is only 4yrs old.what you think i should do? and should i try resetting the rollout switch myself?

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Do not adjust your gas pressure without an manometer or if you dont know what you are doing could be very dangerous. Roll out switches are manual reset if you have an open roll out on a Goodman furnace you probably have a cracked heatexchanger, get a qualified technician out there asap

Posted on Oct 07, 2009

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It sounds like you need to tune down the gas valve a little.There is a Large flathead screw on the gas valve,unscrew it and there is a white plastic screw inside it.While the unit is on adjust it so the flame decreases.this should make it not trip the roll out switch.If it still trips the roll out you could need to replace the switch.

Posted on Oct 06, 2009

  • Nathan Ellsworth Oct 07, 2009

    You can adjust without a manometer if the valve is obviously putting out too much gas.I am talking about a quarter to half a turn no more.I my experience it don not change the water column on the manometer that significantly.

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