Question about Goodman GMS90703BXA Heater

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I have a 1993 Goodman, GMP075-3 that won't turn on. I do not have a vent blockage so I think it is the pressure switch. What is a venter and where can I find it??

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Venter is the inducer motor.

Posted on Dec 31, 2008

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1 Answer

Problem with furnace not kicking on.


could be one of a few diff issues. firstly, the air pressure switch may be failing. check to ensure the inducer motor is providing enough air flow for the air switch to close. if inducer motor isn't creating enough air flow the faults is within the motor. If the airflow is enough, then fault maybe the air switch. you also need to check for any blockage in the exhaust. ensure no debris is blocking the vent going to outside

Jan 21, 2014 | Goodman Heating & Cooling

1 Answer

I am getting the pressure switch blockage and the three red light code. Replaced the pressure switch and still does not work


Hi, the pressure switch won't close error isn't always caused by a defective switch. Occasionally, there really is a blockage in the vent system and that is why there is a pressure switch. You should check for such a blockage, usually caused by a smashed vent cap or spider webs in the vent pipe. Good luck.

Jan 11, 2010 | Goodman Heating & Cooling

1 Answer

Goodman furnace wont come on


If this is a High Eff furnace:
1) Remove the compartment that has the igniter and burners, turn the
power back on, if the furnace lites then you have a problem with the
intake air vent, probably iced over if you live where its cold.

2)Make sure the exhaust vent is not getting backpressure from the
wind.

3) you could cut the pipes on the inside of the house to disconnect them from the furnace, test run the furnace with no pipes.If the furnace
runs then you have a problem with the installation of the vent pipes.

4) Do not run the furnace without the exhaust pipe disconnected,
go to the hardware store and get a couple of rubber clamped
couplings and hook-up the exhaust pipe!

Good Luck

Jan 09, 2010 | Goodman GMS90703BXA Heater

1 Answer

Three blinks on gas furnace, will not maintain flame


3 blinks indicates a pressure switch error. Check or replace air filter, condensate hoses for blockage, check small hose uo to pressure switch(s), check the vent pipes to make sure they pitch back to the furnace, check the air intake and exhaust pipes for any blockage outside. If all looks good, jump out pressure switch as soon as the exhaust fan starts to turn and see if unit starts. If it does, replace pressure switch.

Dec 01, 2009 | Goodman Heating & Cooling

1 Answer

Goodman GMP075-3 Random Incomplete startup


If the draft motor starts then shuts right off and then a red light comes on usually means that there is a blockage somewhere. Check the pressure switch line, make sure that it is clear and the hole in the heater that the pressure switch vaccum line runs to is open. If that checks out then make sure that your flue vent cap is on and that it is not pressed down on the flue vent and that the gases can vent properly

Feb 13, 2009 | Goodman GMS90703BXA Heater

1 Answer

Goodman: My Power Venter (aka Heat and Draft Inducer) won't start


The power ventor most likely needs to be replaced. But be advised. Goodman normally will not sell parts to anyone but a certified technician. I had to show my masters certificate to buy parts from their outlet. This is a part that has a high rate of failure.

Ray

Dec 01, 2008 | Goodman Heating & Cooling

3 Answers

My goodman gmt090-4 shuts off about 10 sec. after burners ignite


Check the pressure sensor. I tapped on mine a few times, removed the hose and checked it for blockage and replaced. It has been working fine since. I do have a new sensor on order.

Oct 04, 2008 | Goodman GMS90703BXA Heater

3 Answers

1993 goodman status light 4 times blinking


Witch blower is running, the inducer or the systems blower?
System blower could mean the the high limit is opening and shutting down the systems gas train, I would check this out first.

The other problem could be with the pressure switch for the gas train, it is supplied from the inducer motor, check to see if it is operating fully.

HSI boards do go from time to time, this sounds more like a system control problem.

Jan 24, 2008 | Goodman GMS90703BXA Heater

1 Answer

Furnace problems


On - OK
1 Blink - Ignition failure. Check Gas flow, gas pressure, gas valve, flame sensor.
2 Blinks - Closed pressure switch. Check pressure switch (stuck in closed position).
3 Blinks - Pressure switch - failre to close. Check venter, pressure switch, vent blockage.
4 Blinks - Open limit switch. Main limit or aux limit are open. (My comment - Means overheating in chamber. Often result of blocked intake air. Bad filter. In my case, plastic wrap had been sucked into the intake. )
6 Blinks - False flame sensed. Check sticking gas valve.
Rapid continuous blinking - Incorrect twinning, incorrect primary polarity. Reverse transformer secondary leads, reverse primary wires.

Closed pressure switch can be from dirty combustion vents, bad chamber pressure - like missing screws, maladjusted gas pressure, failing pressure switch, loose hoses, moisture in the hoses or fan blades The switch need to be closed to ge the unit to work

Jan 23, 2008 | Goodman GMS90703BXA Heater

4 Answers

Goodman code problem three blinks


Same problem with 1 yr old Goodman. Checked entire exhaust and pressure switch. Inside fan, pressure switch hose clogged with crusty white gunk. Cleaned it & furnace fixed. I have no furnace repair experience, but love to "play MacGyver". Hopefully this could save someone a service call.

Sep 18, 2007 | Goodman GMS90703BXA Heater

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