Gibson package unit blowing little air into house. Help!

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Old 06-22-14, 04:34 PM
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Gibson package unit blowing little air into house. Help!

So, I have been working on my central air unit. My problem this time is that there is little airflow coming through the vents in my house, all of them the same. I took the panel off by the blower and made sure everything was clean. I then noticed that while the panel is off, there is much more air flow through the house. I thought it could then be that there was something constricting the airflow in the return duct, but my husband checked it out and said nothing was there. What am I missing?
 
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Old 06-22-14, 04:38 PM
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I'd say you have a clogged filter somewhere. Either that or a crushed return duct.

Friend of mine lived in a house for 5 years, never knew there was a filter in the unit that needed changing.

Have you looked at all the return grilles for a filter?
 
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Old 06-22-14, 04:40 PM
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Yes, we have. The house sat vacant for 10 years before we started fixing it up again. The duct work was put in about 2 years ago when we first got the place, and the system has not been run, so as for right now there are no air filters. I was trying to get it working first before I went and picked some up.
 
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Old 06-22-14, 04:43 PM
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where would the filter in the unit be located? I can't find it in the online manual.
 
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Old 06-22-14, 05:12 PM
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A model number is required when we search for the manual.
 
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Old 06-22-14, 05:28 PM
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I have found a few numbers on it, but I think the one you need is GR4GA-036K096C
 
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Old 06-22-14, 05:58 PM
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Can you get to the dirty side of the evaporator coil? (item 34)
It is opposite the blower side of the evaporator coil.

http://www.foxmacon.com/nd/models/GR4GA.pdf
 
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Old 06-22-14, 06:07 PM
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Behind the fan? I'm trying to get in there, but it is proving quite difficult.
 
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Old 06-22-14, 06:59 PM
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Looks like you have a small door in panel 9 that will let you see the dirty side of the coil.

Turn off power and clean it with some simple green and a water hose.
Home Depot has a nozzle like the Bullseye that can focus into a very small stream . I use the Bulls Eye from Johnstone but this one uses the same 3 ball bearing method for controlling the stream well enough to practically sign your name on a sheet of paper.
 
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Old 06-22-14, 07:02 PM
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There is no door in panel 9. I have looked a dozen times
 
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Old 06-22-14, 07:10 PM
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I always pop the top and the coil is always dirty.

I sometimes use a stick of pvc to prop it open if one is side sealed with tar or mastic.

Use a large trash bag to keep water off of the blower motor.
 
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