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View Full Version : Goodman furnace GMP 075-3 Burners will not ignite


Scoutmaster
Mar 23, 2009, 03:00 PM
I have a Goodman GMP 075-3 furnace that will not ignite. I have checked the hose to the pressure switch, and all the limit switches. I have four of them and they all register good. I even tried jumping them out. The igniter comes on and glows, but when the gas valve is supposed to open it does not and the igniter goes back out. This cycle is repeated and nothing happens. The red light on the circuit board has a continuous glow, no flashing. The only thing that I can come up with is that the gas valve is bad. I have read some of the prior questions from others and tried some of the suggestions offered, still nothing.

letmetellu
Mar 23, 2009, 08:00 PM
After the hot surface ignitor get red does the burners not even attempt to light. I would try a volt meter on the gas valve at the time for the burners to light to see if you get 24 volts, if you do and the burners don't attempt to light I would say it is the valve.

Scoutmaster
Mar 24, 2009, 05:35 AM
No, the burners do not attempt to light. I hear a click at the valve but no 24 volts. I rechecked the limit switches as it was trying to light but nothing close to the voltage suggested.