Question about Goodman GMS90703BXA Heater

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Goodman heater blower runs on own won't stop after flame shuts of

Blower will start and stop on own even when tempeture is above the one set on the thermastat.

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Bad blower relay or timer. replace board.
shorted thermostat wires. check.

Posted on Feb 20, 2009

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Goodman model PGB036075-1B when I turn on the heater the blower starts soon as the burnner starts about 2 sec. later the blower stops. then of course it overheats. What would cause the blower to shut...


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your limit switch is opening up, that causes constant fan. Check for flashing codes after flame shuts off and fan continues. Check airflow, filters, lack on return air for possible hi temp limit problems.

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Goodman model PGB036075-1B will start the gas and the burner but will shut down before blowing heat. Is it a bad switch?


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Mar 06, 2011 | Goodman Heaters

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I would guess that the fan off setting on your limit is set a little to high. If you have the manual you can see what it says about changing the running time for the fan after the burner has shut off look on the control board and you should see two switches,one to set the time for burners to fire before main blower starts and one to set time for fan to run after burners shut off. To help with the problem you are describing set fan run time up so fan wii run longer. Hope this helps. Thaks.

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Dec 03, 2009 | Heaters

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Fan and heater run fine but fan does not shut off for a long time


Check the diagnostic indicator.
1. If the blower runs for hours make sure the fan switch on the thermostat is set on "auto".
2. The furnace safety system must be in lockout. This is the furaces way of telling you there is a problem.
3 Most common problem is a dirty flame sensor.

Feb 20, 2009 | Goodman GMS90703BXA Heater

1 Answer

BLOWER CONTINUES TO BLOW COLD AIR AFTER REACHING DESIRED TEMP.


There is a little switch on the circuit board. Look closely at the wiring diagram and it will indicate which switch to adjust. If not, review the operating manual for details.

Nov 24, 2008 | Goodman GMS90703BXA Heater

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Goodman GMP125-5 Air Handler


REPLACE BLOWER MOTOR

if its spinning free until motor is energized motor may have bad armature or brushes.

If you energize blower and manually give fan motor a spin will it start if so replace cap.

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