| [GMCnet] Caravan mark 4 Rooftop air [message #213035] |
Tue, 02 July 2013 13:43  |
Anonymous
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I didn't see a manual for this unit on bdub's page, is there a manual
available for it? or is it even worth trying to get running? Fan runs so
does compressor but no cooling, if I turn the thermostat all the way to
cool the compressor and fan bog way down like it's locking up.
Any Ideas?
Probably wouldnt take much to talk me into a new unit, this one sounds
like a hurricane inside the coach.
Thanks
Brian
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| Re: [GMCnet] Caravan mark 4 Rooftop air [message #213113 is a reply to message #213039] |
Wed, 03 July 2013 06:08  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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I bought a 13,500 Dometic heat pump - cos Frady made me a deal on it. If you only have one unit, you might want to look at a 15,000 instead, mine is marginal when the coach is on asphalt facing the sun. I have to cover the windshield to hold 70 degrees parked in the Georgia Auigust heat. Two 13,500s would be good. I have yet to find a 'quiet' one, they all will have fan noise.
--johnny
'76 23' transmode norris
'76 palm beach
________________________________
From: "brian@pimmlabs.com" <brian@pimmlabs.com>
To: gmclist@temp.gmcnet.org
Sent: Tuesday, July 2, 2013 3:22 PM
Subject: Re: [GMCnet] Caravan mark 4 Rooftop air
Ok, If I do replace the A/C who makes a good unit that has plenty of
cooling and is quiet?
Brian
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Caravan mark 4 Rooftop air [message #213120 is a reply to message #213035] |
Wed, 03 July 2013 07:46 |
rcjordan
Messages: 1913
Registered: October 2012
Location: Elizabeth City, North Car...
Karma: 1
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Senior Member |
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>13,500 Dometic heat pump
That's what JimB chose for mine. These will start on Dometic's new suitcase inverter gensets so that's a plus for expanding you choices for your power drawer if/when the time comes.
SOLD 77 Royale Coachmen Side Dry Bath
76 Birchaven Coachmen Side Wet Bath
76 Eleganza
Elizabeth City, NC
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| Re: [GMCnet] Caravan mark 4 Rooftop air [message #213129 is a reply to message #213035] |
Wed, 03 July 2013 09:10 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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Are you sure the compressor is starting? Sounds like it is 'bogging' the system as if it is not starting. Could just be a bad start capacitor or weathered connections on the push on faston terminals causing voltage drop under load. One is a cheap fix and second a very cheap fix. If not that then I'd replace unit. JWIWD.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Caravan mark 4 Rooftop air [message #213136 is a reply to message #213035] |
Wed, 03 July 2013 10:41 |
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Anonymous
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Yes the compressor is running, you could hear it 1/4 mile away LOL. It
stops if I turn the control off then starts as I turn the control cooler
until about 3/4 of the way to coolest and that is where the compressor
stalls and bogs the fan down as well. The compressor never stops running
so I think it has no charge but I don't understand the stalling part of
it. I'm running it on shore power with a 100' 14 gauge cord so it could
be possible that it's just browning out, but if it has no charge how
would it?
Brian
Are you sure the compressor is starting? Sounds like it is 'bogging' the
system as if it is not starting. Could just be a bad start capacitor or
weathered connections on the push on faston terminals causing voltage
drop under load. One is a cheap fix and second a very cheap fix. If not
that then I'd replace unit. JWIWD.
John Lebetski
Chicago, IL
77 Eleganza II
Source America First
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| Re: [GMCnet] Caravan mark 4 Rooftop air [message #213137 is a reply to message #213035] |
Wed, 03 July 2013 10:48 |
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Anonymous
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I was looking at the Dometic 15,000 and it is rated for the same genset
requirements as the 13,500. Will the Onan 4K run it ok? it is over the
ratings required but I thought I'd ask to see if anyone has this combo.
I'm not sure if the heat pump version would do much for me a lot of the
places we will be staying won't have hook ups.
Brian
I bought a 13,500 Dometic heat pump - cos Frady made me a deal on it.
If you only have one unit, you might want to look at a 15,000 instead,
mine is marginal when the coach is on asphalt facing the sun. I have to
cover the windshield to hold 70 degrees parked in the Georgia Auigust
heat. Two 13,500s would be good. I have yet to find a 'quiet' one,
they all will have fan noise.
--johnny
'76 23' transmode norris
'76 palm beach
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| Re: [GMCnet] Caravan mark 4 Rooftop air [message #213151 is a reply to message #213035] |
Wed, 03 July 2013 12:43 |
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Anonymous
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Nope not kidding, I plugged it in to start checking out the electrics
and failed to engage the brain before trying the AC. It was about 110
degrees in the coach when I thought hey maybe the AC works.........
Didn't think about it until I was typing that last post. I'll get a
bigger cord on it and see what happens. :(
You're kidding, right?
If not, then there's the first thing to fix. 100' for something in the
range of 20A should be bigger than #14 wire.
Cut the run to 50 feet AND go to a #12, OR go to a #10 cord.
Yes, it is probably "browning out" when the compressor starts to pump
some refrigerant.
'73 23' Sequoia For Camping
'73 23' CanyonLands For Sale
UA (Upper Alabama)
"Time is money. If you use YOUR time, you get to keep YOUR money."
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| Re: [GMCnet] Caravan mark 4 Rooftop air [message #213172 is a reply to message #213151] |
Wed, 03 July 2013 14:04 |
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WD0AFQ
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
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Senior Member |
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Yes, try a larger cord before you do damage. I am assuming your Onan is not working, or you could fire that up. Our 74 has a 6k Onan and it is only used to run our 15,000 Coleman, center mounted. Works great and has always cooled our coach in all kinds of heat. It is noisy. When someone comes out with a 15k quiet one I will buy the sucker. Its funny that I don't notice the noise until I turn it off. We cool the coach on high speed then turn it to low to maintain it.
Dan
3 In Stainless Exhaust Headers
One Ton All Discs/Reaction Arm
355 FD/Quad Bag/Alum Radiator Manny Tran/New eng.
Holley EFI/10 Tire Air Monitoring System
Solarized Coach/Upgraded Windows
Satelite TV/On Demand Hot Water/3Way Refer
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