Question about Goodman GMS90703BXA Heater
I have a newly installed goodman gmh95 the funace is flashing a 3 led code. the furnace will fire and run intermittently but for the most part only the induced draft blower only runs
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Posted on Jan 02, 2017
Check out the green wire going to the gas valve for proper ground,and also check all wires for good connections......... for the intermitting start / stopping and sand the fame sensor pin, this should do the trick.
Posted on Dec 14, 2009
it sounds like the low temp limit switch, the one that cools the furnace down with the burner off and the thermostat open, when it cools to a point the fan stops, the other switch in burner area turns burner off/on, hope this helps
Posted on Jan 31, 2010
Hello, you can check the resistance of the motor by turning power off to the furnace and disconneting tje two wires which go to the motor. Take a meter and check the resistance, you should have resistance, if not the motor is bad. A rollout switch is a normally closed switch so you will chevk its resistance aswell, if the switch is open that signals a problem with the burner flames and you not read resistance. If the switch is closed and good you will read resistance.
Posted on May 01, 2011
Testimonial: "very helpful and fast response"
Need your model # to check the codes but, this coming back on after turning the t-stat off is rare. You may have been in a lockout and the furnace re-started. Some furnaces try to start three times , then lock out. Time out, then re-start. The codes should be on your furnace blower door. Write back with this info and i could help.
Posted on Oct 13, 2011
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