Check it for fuel blockages: put a flat roasting pan under the burner. remove dial on fuel valve as it enters the burner. Remove fuel line from burner pump. Reinstal fuel valve dial and check for good fuel flow. If no.. clean and change your filter at the tank. If that is sludged, clean it and retest.. There is also a filter inside the pump. If none of this makes any sense...Call a tech!
You have blinking light on the control panel.count the flashes.you also have diagram inside of furnace cover.#of flashes will point you to the bad or open sensors .good luck
Clean or replace the flame sensor you can attempt cleaning it by pulling it out and using a scotch rite pad on the rod. Just scratch off the black carbon and retry or replace it to be sure
SOURCE: Goodman GMS90904CXA Wont ignite, light blinks 3 times
Ok, you either have a inducer fan issue or a pressure switch issue or a plugged vent pipe. The inducer turns on to establish a draft for the exhaust. If it is not working you will get this error code. If the pressure switch does not sense pressure caused by the inducer, it will give this code. If either the intake pipe or exhaust pipe is blocked (even y just a little) it will give you the same error code. If the condensate hose or receptical is plugged, again it will give you this error code. Good Luck!
SOURCE: furnace burner ignites then goes out
Sound like a thermocouple, or flame sensor.
If it has flame sensor make sure you check micro amps to verify operation, because it might be the board that controls the sensor.
SOURCE: Goodman furnace burner ignites then shuts off in about 10 seconds
if you have replaced the flame sensor and it will not stay lit, the draft safety switch may be opening. It works on positive and negative pressure created by the inducer fan motor.You may have a restriction in your heat exchanger or if is a high efficiency furnace, it may not have the drain tube installed properly with a trap. The trap works just like the trap under your sink and if water isnt in the trap, the pressures can be effected enough to open the draft switch(some call it an air pressure switch)
SOURCE: My York Stellar PLUS furnace (Model
Check gas pressure, inspect manifold & make sure there is not a blockage.Make sure gas is present and main gas shut off valve to furnace is on also check the knob on the 24 volt gas valve and see if it is in the on position , check the MV terminal on the gas valve to 24 volt common with a volt tester to see if you have 24 volts present, if you do have 24 volts at gas valve, replace valve. if you do not have 24 volts at gas valve check high limit control & roll out limits for a open circuit, Good luck.
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