Tired (dead?) roof A/C

D

dave lowry

New member
Jul 7, 1998
615
0
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When it worked, it didn't seem to cool real well, and now we can't get it
to work at all.

Would it be wise to pay the RV guy look it before we replace it, and is
there any liklihood it could be fixed reasonably? (We'd kinda like to have
one of those low profile ones anyway.)

Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
 
I would spend my money on a new one, more efficient and lower profile.

gene

>When it worked, it didn't seem to cool real well, and now we can't get it
>to work at all.
>
>Would it be wise to pay the RV guy look it before we replace it, and is
>there any liklihood it could be fixed reasonably? (We'd kinda like to have
>one of those low profile ones anyway.)
>
>Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
>
>
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/
 
>Delivered-To: gmcmotorhome
>Date: Thu, 6 Jul 2000 17:44:50 -0700
>To: gmcmotorhome
>From: Dave Lowry
>Subject: GMC: Tired (dead?) roof A/C
>Sender: owner-gmcmotorhome
>Reply-To: gmcmotorhome
>
>When it worked, it didn't seem to cool real well, and now we can't get it
>to work at all.
>
>Would it be wise to pay the RV guy look it before we replace it, and is
>there any liklihood it could be fixed reasonably? (We'd kinda like to have
>one of those low profile ones anyway.)
>
>Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA

One quick thing to check is to remove the inside cover and then short
across the thermostat terminals with a jumper and then put the switch
on air condition and see if it works. If it works then, it means
that your thermostat is bad. This could give the symptons. However,
if your fan doesn't work either you might just have a bad control
switch. Again, you can jumper a terminal or two to see if it works
when you bypass the switch.

You can get the schematic from http://www.rv.com/pdfs/19-739pdf

Hope you find the problem.

Emery Stora
77 Kingsley
Santa Fe, NM
 
Well, no luck with tests Emery suggested so I guess its dead.

Next question: When I called CW to make an appointment (and take advantage
of their extra 10% off deal), the service guy says they can do it ONLY if
it doesn't need a "leveling pan". This is appearently an adapter thingy
sometimes used on curved roof RVs to provide a flat mounting surface.

Can anyone tell me if my original A/C has a leveling pan, and if so can it
be reused with the new A/C?

TIA

Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
 
>Well, no luck with tests Emery suggested so I guess its dead.
>
>Next question: When I called CW to make an appointment (and take advantage
>of their extra 10% off deal), the service guy says they can do it ONLY if
>it doesn't need a "leveling pan". This is appearently an adapter thingy
>sometimes used on curved roof RVs to provide a flat mounting surface.
>
>Can anyone tell me if my original A/C has a leveling pan, and if so can it
>be reused with the new A/C?
>
>TIA
>
>Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA

Dave - don't think that you'll need it. The GMC is relatively flat
where the air conditioner is and the original Norcold did not use
their optional pan system even though one was available. I think
something like the Airstream travel trailer use them because their
roof line is more curved at the center.

Emery
 
>Dave - don't think that you'll need it. The GMC is relatively flat
>where the air conditioner is and the original Norcold did not use
>their optional pan system even though one was available. I think
>something like the Airstream travel trailer use them because their
>roof line is more curved at the center.
>
>Emery

Thanks, Emery.

How's the vapor lock problem coming?

The plastic vents in the fender liners sound really promising.

Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
 
>Well, no luck with tests Emery suggested so I guess its dead.
>
>Next question: When I called CW to make an appointment (and take advantage
>of their extra 10% off deal), the service guy says they can do it ONLY if
>it doesn't need a "leveling pan". This is appearently an adapter thingy
>sometimes used on curved roof RVs to provide a flat mounting surface.

The mounting locations for A/Cs on the GMC is flat, or as near flat as matters.

>Can anyone tell me if my original A/C has a leveling pan, and if so can it
>be reused with the new A/C?

No it doesn't. I replaced mine last summer with a new higher efficiency
unit. The new A/C went on using only the mounting pieces that came with the
A/C. They included a foam gasket and that's it. It seals fine. I've had my
coach in heavy rain (12" in 24 hours) with no leaks.

Install's pretty easy - but they may need to re-cut the opening depending
on how yours was cut at the factory. Mine had rounded corners that
interfered with the new A/C.

Henry
PS make certain that they only use the mounting hardware provided with the
A/C - NO sheet metal screws.

>TIA
>
>Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
>
 
Dave,
I installed a new AC unit that I got from CW last summer and it doesn't
require a leveling pan. The area where the AC sits is almost flat and
the AC will mount using the pieces that come with it. Don't let them
try and sell anything that you don't need.

- --
J.R. Wright
GMC GreatLakers
77 Eleganza II
Michigan

>
> Well, no luck with tests Emery suggested so I guess its dead.
>
> Next question: When I called CW to make an appointment (and take advantage
> of their extra 10% off deal), the service guy says they can do it ONLY if
> it doesn't need a "leveling pan". This is appearently an adapter thingy
> sometimes used on curved roof RVs to provide a flat mounting surface.
>
> Can anyone tell me if my original A/C has a leveling pan, and if so can it
> be reused with the new A/C?
>
> TIA
>
> Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
 
Thanks guys. Its a new LOW PROFILE Duo-Therm for us, and no leveling pan.

Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
 
>Dave: where did you buy that low profile and how much, if you don't mind
>telling. Did you buy a heat strip? Dean Hanson's Hot Rod ( and in need of A/C)

Good ol' Camping World. Its $679 in their catalog, but with the 10%
President's Club discount and another 10% from a deal they're running if
you make the appointment by 7/11, it should only end up costing about $600
installed (unless we spring the for extra $110 for the extended warranty).
It comes with the heat strip.

Just hop in the hot rod & head down to San Martin and get cool. HTH

Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
 
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