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[GMCnet] House AC Issue [message #301760] Tue, 07 June 2016 07:16 Go to next message
carguy is currently offline  carguy   United States
Messages: 498
Registered: June 2006
Location: Coshocton OH
Karma: 0
Senior Member

My son, who uses our GMC for a week each July told me last night that it seems to him that while the overhead AC seems to cool properly but as the week goes on it’s ability to remove moisture diminishes. He says that he can see water is running across the roof into the drip rail.

He asked if I had any ideas. Hopefully, folks on here will be able to help.
Bill Brown
Coshocton OH
'77 Buckeye Cruiser
Change is certain, progress is not
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Bill Brown - '77 Buckeye Cruiser
Coshocton OH
carguybill@sbcglobal.net
Re: [GMCnet] House AC Issue [message #301761 is a reply to message #301760] Tue, 07 June 2016 07:28 Go to previous messageGo to next message
Dolph Santorine is currently offline  Dolph Santorine   United States
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Registered: April 2011
Location: Wheeling, WV
Karma: -41
Senior Member
Sounds like a trip to Jamboree in the Hills!

Dolph Santorine

DE N8JPC

Wheeling, West Virginia

1977 ex-Palm Beach TZE167V100820
1-ton, Sullybuilt Bags, Reaction Arms, 3.70 LSD, Manny Transmission, EV-6010,


> On Jun 7, 2016, at 8:16 AM, Carguy wrote:
>
> My son, who uses our GMC for a week each July told me last night that it seems to him that while the overhead AC seems to cool properly but as the week goes on it’s ability to remove moisture diminishes. He says that he can see water is running across the roof into the drip rail.
>
> He asked if I had any ideas. Hopefully, folks on here will be able to help.
> Bill Brown
> Coshocton OH
> '77 Buckeye Cruiser
> Change is certain, progress is not
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Re: [GMCnet] House AC Issue [message #301762 is a reply to message #301760] Tue, 07 June 2016 07:20 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
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Registered: January 2004
Karma: 5
Senior Member
Put a thermometer in the outlet and monitor the temp. Condensate running across the roof is good!

JR Wright
78 Buskirk Stretch
75 Avion
Michigan

> On Jun 7, 2016, at 8:16 AM, Carguy wrote:
>
> My son, who uses our GMC for a week each July told me last night that it seems to him that while the overhead AC seems to cool properly but as the week goes on it’s ability to remove moisture diminishes. He says that he can see water is running across the roof into the drip rail.
>
> He asked if I had any ideas. Hopefully, folks on here will be able to help.
> Bill Brown
> Coshocton OH
> '77 Buckeye Cruiser
> Change is certain, progress is not


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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: [GMCnet] House AC Issue [message #301764 is a reply to message #301760] Tue, 07 June 2016 07:49 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
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Registered: January 2004
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Senior Member
Hi Bill
If water is running across the roof that shows that it is taking moisture out of the interior.

To improve things the filter under the inside grill should be cleaned. It is foam and can be washed with dish soap.

While the filter is out the fond inside the air conditioning box should be cleaned as well. It might be necessary to blow them with air and/or brush them. If they are clogged with dirt or lint that will reduce the efficiency of the air flow and cooling. Once the filter and fins are cleaned you should notice immediate improvement.

Emery Stora

> On Jun 7, 2016, at 6:16 AM, Carguy wrote:
>
> My son, who uses our GMC for a week each July told me last night that it seems to him that while the overhead AC seems to cool properly but as the week goes on it’s ability to remove moisture diminishes. He says that he can see water is running across the roof into the drip rail.
>
> He asked if I had any ideas. Hopefully, folks on here will be able to help.
> Bill Brown
> Coshocton OH
> '77 Buckeye Cruiser
> Change is certain, progress is not
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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Re: [GMCnet] House AC Issue [message #301769 is a reply to message #301760] Tue, 07 June 2016 09:48 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
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Registered: October 2006
Location: Woodstock, IL
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While the grill and filter is out per Emery above, make sure that the thermostatic bulb sensor is still clipped in the plastic retainers in the air stream. If it is touching the cold evaporator the unit will think the room air is cooled and shut off prematurely.

John Lebetski
Woodstock, IL
77 Eleganza II
Re: [GMCnet] House AC Issue [message #301777 is a reply to message #301769] Tue, 07 June 2016 10:36 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
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Registered: January 2004
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Senior Member
Very good point, John. I had forgotten that I had, at one time, found the bulb touching the fins and you are correct that it will cause cycling of the compressor and reduced cooling.

Emery Stora

> On Jun 7, 2016, at 8:48 AM, John R. Lebetski wrote:
>
> While the grill and filter is out per Emery above, make sure that the thermostatic bulb sensor is still clipped in the plastic retainers in the air
> stream. If it is touching the cold evaporator the unit will think the room air is cooled and shut off prematurely.
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
> Source America First
>
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Re: [GMCnet] House AC Issue [message #301782 is a reply to message #301777] Tue, 07 June 2016 10:45 Go to previous messageGo to next message
mark grady is currently offline  mark grady   United States
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Registered: November 2015
Location: northern Indiana
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Member
My second gen Dometic / Duotherm units had a very thick air filter pad that
was white and pink material bonded material.

I was't able to find these, but I did find that a 20x25 blue fiber
cardboard edged house furnace filter could be cut in half and then folded
over - and fits perfectly. This is a low cost, always available replacement
filter. It's not a HEPA filter, but it keeps the evaporator coils clean.

Mark

On Tue, Jun 7, 2016 at 11:36 AM, Emery Stora wrote:

> Very good point, John. I had forgotten that I had, at one time, found the
> bulb touching the fins and you are correct that it will cause cycling of
> the compressor and reduced cooling.
>
> Emery Stora
>
>> On Jun 7, 2016, at 8:48 AM, John R. Lebetski
> wrote:
>>
>> While the grill and filter is out per Emery above, make sure that the
> thermostatic bulb sensor is still clipped in the plastic retainers in the
> air
>> stream. If it is touching the cold evaporator the unit will think the
> room air is cooled and shut off prematurely.
>> --
>> John Lebetski
>> Woodstock, IL
>> 77 Eleganza II
>> Source America First
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
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'77 + 78 Kingsley
Re: [GMCnet] House AC Issue [message #301816 is a reply to message #301782] Wed, 08 June 2016 00:11 Go to previous message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
Lot of the time under high humidity, the evap coil tends to freeze up.
I turn it to warmer position for 10 minutes and let it defrost.
One can pull the filter down and see the evac coil with ice.

On Tue, Jun 7, 2016 at 8:45 AM, mark grady wrote:

> My second gen Dometic / Duotherm units had a very thick air filter pad that
> was white and pink material bonded material.
>
> I was't able to find these, but I did find that a 20x25 blue fiber
> cardboard edged house furnace filter could be cut in half and then folded
> over - and fits perfectly. This is a low cost, always available replacement
> filter. It's not a HEPA filter, but it keeps the evaporator coils clean.
>
> Mark
>
> On Tue, Jun 7, 2016 at 11:36 AM, Emery Stora wrote:
>
>> Very good point, John. I had forgotten that I had, at one time, found
> the
>> bulb touching the fins and you are correct that it will cause cycling of
>> the compressor and reduced cooling.
>>
>> Emery Stora
>>
>>> On Jun 7, 2016, at 8:48 AM, John R. Lebetski
>> wrote:
>>>
>>> While the grill and filter is out per Emery above, make sure that the
>> thermostatic bulb sensor is still clipped in the plastic retainers in the
>> air
>>> stream. If it is touching the cold evaporator the unit will think the
>> room air is cooled and shut off prematurely.
>>> --
>>> John Lebetski
>>> Woodstock, IL
>>> 77 Eleganza II
>>> Source America First
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
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> Unsubscribe or Change List Options:
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>



--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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