Question about Goodman GMS90703BXA Heater

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Furnace filter on model gmt070-3a...

Our furnace stopped heating in the middle of the night, We are looking to change the filter on the actual model but, can't seem to find the location on the furnace it's self. Can you please let us know where it is so we can replace it? thanks
Brandi Shortt

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We had a similar question on our Goodman furnace, couldn't find where the filter goes.

Our furnace has two large metal covers that cover the lower and upper parts of the furnace in front, approximately 18 inches by 18 inches. The top one has a sticker that says "don't open equpiment, you may void the warranty". The filter is inside this compartment, at the bottom. You have to unscrew the screws that hold these two covers together, then just pull the filter out to change it.

I called the people who installed our furnace and aksed them if it really voids the warranty for us to open it up and they were non-comittal about it. Anyway, I opened it and changed the filter.

Posted on Jun 07, 2008

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Look in and around where the blower motor is located. there has to be a filter compartment there. probably near the bottom as it looks like an upflow heater. make sure the filter door is closed. it may have a door interlock switch that cuts the burner out if it is not fully closed.

Posted on Feb 02, 2008

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1 Answer

Gms80703ana


There are some fairly simple things you can check on the furnace before you call a furnace repair technician. First check the furnace filter usually located where the return air goes into the furnace. If it is dirty, replace it. Check the drain hoses on the furnace to make sure they are not kinked or clogged. Next check the intake and exhaust piping to make sure they are clear. Watch the burners light to see if they are lighting across correctly, if they do not, have them cleaned by a repair technician. Hope this helps

Dec 14, 2013 | Goodman GMS90703BXA Heater

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I'm not sure of the exact model of my Goodman furnace, but here is the problem. The new furnace was installed this summer (2010) and it is mounted in the space under the house in Big Bear Lake, CA....


I suppose this furnace is fueled by Natural Gas?
(Or is it Propane-- Bottled gas?)

Did the Service company leave you any manual, with your new furnace?
and I would think there was a warranty, for assuring you (the customer) satisfaction, no?
Have you called the people who sold/installed it?
What do they say?

If they did leave a manual-- what does it suggest for narrowing down your possible problems?
Like: Low Fuel-- Low Voltage- Filter Changes, Fan switch problems- or ignition failure problems?

For a new furnace, someone should be right there to do a start-up for you!

Let me know what you learn--

Mack B

Jan 14, 2011 | Goodman GMS80903BNA Heater

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I have a york furnace, pilot light is lit but i have not heat and no air is blowing..this happened last night also and this morning i accidently bumped into the furnace with my sons toy and it started...


Hello,
From what you are telling me here, you have a loose wire inside the furnace. You could try giving it a bump again and it may work. But prbably not for long...
You need to find the bad wire or have someone look at it that can tell where the bad connection is.

Heatman101

Feb 18, 2010 | Heaters

1 Answer

The furnace send signal to the fan in about 30 seconds, now this fan is set in auto from my termostat, my problem is the fan is starting slowly and some time it don't start, but if I use the option manual...


Depending on the model of the furnace, the blower is either a 2 or 3 speed. When the furnace operates in heating mode with the thermostat in the auto position, the furnace starts the fan when the furnace reaches a specific temperature or after a set time delay, but it operates the fan in low or med low speed on heat mode, when you put the thermostat fan switch in the "ON" position, the furnace operates the fan in "HI" speed, the same speed used for cooling mode. You may have a blower moter that is starting to short. I would recommend having a professional replace the motor before now before it becomes an emergency in the middle of the night during a cold spell.

Oct 10, 2009 | Heaters

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Heater won't heat very long


there isnt a pilot if it has jets , it has a Hot surface ignitor. you should see a glow and then the jets light , if its running for a few min it may be overheating, have you changed the filter recently? you should also have a flash code you can locate when the furnace shut off and is no longer doin what its supposed to look thru the bottom door peep hole and watch for a series of red flashes. if you remove the cover after retrieving the flash code there will be a chart on the inside of the cover that will tell you why the furnace is shutting off. by the way the model # you gave is for the A/C coil above the furnace, not the furnace.

Oct 10, 2009 | Heaters

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Need to Know Where to Change the Furnace Filter


On the bottom of the indoor unit should be a cover or tray. Sometimes a large grill inside the house, close to the unit is where they are placed. Good luck

Apr 23, 2009 | Goodman Heaters

2 Answers

Furnace cuts out because of "low air flow", then starts again


try the furnace without the filter. if it stays running then find out what filter came with the furnace. if you have the owners manual. look for the simple things first. blockage, is the motor and fan runnin properly.. good luck

Apr 09, 2009 | Goodman GMS90703BXA Heater

1 Answer

Won't go past 68...


Be sure the filter is new and clean
Check Chimney/vent to be sure it is not plugged or iced up.
Also if it has a drain be sure it is not kinked or plugged and draining correctly

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