Question about Goodman GDS80904BNA Open Flame Heater
When I turn on the power, the inducer comes on, the control board clicks, the ignitor bar glows, the board clicks again, and the ignitor bar stops glowing. It seems like the gas valve isn't opening to allow combustion of any kind. I've replaced 1 rollout switch, the flame sensor and the control board. What should I do next? Replace the limit control switch and the pressure switch? How often do gas valves go bad? Could it be that the gas valve has stopped working?
I have the same exact ignition problem. My Goodman furnace is less than 3 years old.
Goodman gmp075-3 gas furnace and the flame cycles for 4 sec
Posted on Dec 11, 2009
Test while the unit is firing with a meter. you should have 24 volts going to gas valve. If you do and no gas is coming out, you have a bad gas valve. You will need a gas pressure test kit to install a new one correctly.
Posted on Dec 01, 2008
Glow coil may be bad not giving control board good amp signal check for cracks dont handle with bare hands.
Posted on Feb 12, 2013
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Posted on Jan 02, 2017
OK, if the furnace is not lighting for even a few seconds, you have either a bad gas valve, bad wire, bad control module or no gas. The pressure switch is not the issue. Check all wires to the gas valve and look for 24 volts across them when the ignitor glows and you hear the click. Then test for 24 volts to ground. It could be a bad ground wire.
Posted on Oct 21, 2008
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1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution:You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.
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