Question about Cozy (W352E) Heater

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Goodman ac/gas furnace unit mdl. # gmp075-4

Problem:gas furnace will not lite. When i start unit in heat mode , induction blower begins, then igniter at 3.9amps lites. After that unit turns off! Checked gas valve for 24volts and only getting 13volts. Checked voltage from secondary transformer and 27volts is coming out. Could the pc board be a problem, but the red light on the pc board is on continuasly and not blinking , schematic says that is normal operation. I say board is malfunctioning, HELP!

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  • Anonymous Feb 19, 2009


    I have a 13-yr old Goodman Gas Furnace, GMP Series. Where is the Flame Sensor?. I took the front panel off furnace and I'm told I need to use a 1/4" driver, remove screws, and clean sensor.

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No 24v. going to gas vale to open whentry to lite.

Posted on Nov 04, 2010

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I HAD THE SAME PROBLEM, TURNS OUT IT WAS THE FLAME SENSOR, CLEANED IT, AND ALL WAS GOOD

Posted on Dec 13, 2007

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What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the ignitor does not energize (bad control, bad ignitor), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not lite (dirty pilot), the burner does not lite (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

Most newer furnaces will have a diagnostic center or control built into the control module. You may be able to view it as it is running thru a small viewing port. Some models will require the removal of an access panel prior to finding it. On the reverse of the access panel, there will be a diagnostic chart that will aide you in understanding any error code recorded (usually a blinking light).

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