Question about Goodman GMS90703BXA Heater
4 year old furnace. Circuit board and pressure switch replaced last year.
Turned furnace on, turned thermostat on heater, blower turned on, it cycled to the ignitor, ignitor glowed shut down. repeated till it shut down. turned thermostat off then back on. recycled through to the same point then shut off. It is not igniting. I spoke to a service man on the phone he said to check the vac on the limit switches and gas valve. I have 25 volts on all but one switch. he said ti jump it to see if it was the problem. I jumped it and still no luck on getting the furnace to ignite. any help?
I had the same problem. I had to remove a return air duct filter that i had installed and it worked just fine. The system needs plenty of air flow to operate.
Posted on Jun 17, 2009
Listen for the gas valve to click on,,,if you do not hear it clicking on u could have bad gas valve,,,if it is smart valve which was around about 4 years ago they had major troubles and most where dead on startup. if it is clicking on than you might have something in the pilot tube or moisture in the valve,,try banging on the valve some ,,sometimes that will break it up and let it flow past if do right after it clicks in..might have to pull the pilot tube and blow out,,,sorry just dont have enough info at moment for lock down diagnoses,,good luck
Posted on Oct 25, 2008
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Posted on Jan 02, 2017
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