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Only 1 AC runs on gen, Both will run on shore
08-10-2011, 08:53 AM
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#1
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Junior Member
Join Date: Dec 2008
Posts: 5
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Long time reader, first time poster. Have learned a lot, but I have a puzzle I can't solve. I have a 2000 Southwind Storm, 30 amp, with Intellitec shed system. When the gen is running, the front AC with not do anything, but the rear runs fine. When I switch to shore power both will run fine. Switch back to gen and the front dies. Everything else in the coach is fine on gen or shore. Any ideas would be appreciated as it's hot and football tailgating is coming up fast.
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08-10-2011, 09:22 AM
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#2
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Member
Join Date: Jun 2011
Posts: 60
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Quote:
Originally Posted by oldpoke76
Long time reader, first time poster. Have learned a lot, but I have a puzzle I can't solve. I have a 2000 Southwind Storm, 30 amp, with Intellitec shed system. When the gen is running, the front AC with not do anything, but the rear runs fine. When I switch to shore power both will run fine. Switch back to gen and the front dies. Everything else in the coach is fine on gen or shore. Any ideas would be appreciated as it's hot and football tailgating is coming up fast.
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Got enough generator capacity to pull both A/Cs, especially on compressor start up?
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2007 K-Z 35 Toyhauler, 2006 Chev 2500HD Duramax, 2005 H-D Road King Classic, 2007 Mini-Schnauzer "Scooter"
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08-10-2011, 09:25 AM
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#3
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Senior Member
Newmar Owners Club Ford Super Duty Owner
Join Date: Sep 2008
Location: Chilliwack, BC
Posts: 976
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Think it's done on purpose. Your GEN might not have enough power to run BOTH.
TW
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08-10-2011, 09:30 AM
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#4
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Senior Member
Join Date: Jan 2008
Location: New Hampshire
Posts: 283
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How big is the genny...Is this the 1st time it has happened...Check breakers on generator...
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08-10-2011, 09:40 AM
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#5
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Junior Member
Join Date: Dec 2008
Posts: 5
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My gen is an Onan 5500W. All worked well when I parked it last.
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08-10-2011, 10:06 AM
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#6
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Senior Member
Join Date: Jan 2008
Location: New Hampshire
Posts: 283
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Well that generator will give you about 45 amps so I doubt that you are overloading it...Are there breakers on it...
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08-10-2011, 10:34 AM
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#7
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Junior Member
Join Date: Dec 2008
Posts: 5
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Quote:
Originally Posted by movin-on
Well that generator will give you about 45 amps so I doubt that you are overloading it...Are there breakers on it...
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30 amp breakers on the gen. They are NOT tripping, I reset them to make sure. I assume if they trip I would not have power to anything. What gets me is the fact the front AC will not even try to come on ( no fan, no hum no nothing) with the gen. I try it alone and not with the rear AC.
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08-10-2011, 10:45 AM
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#8
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Member
Join Date: Oct 2002
Location: Brownsville Tx. 78526
Posts: 70
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Sounds like one contact on the generator transfer switch is not making contact.Happened on mine.
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Ron
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08-10-2011, 10:52 AM
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#9
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Junior Member
Join Date: Dec 2008
Posts: 5
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Quote:
Originally Posted by ronmc
Sounds like one contact on the generator transfer switch is not making contact.Happened on mine.
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Where are the contacts located ?
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08-10-2011, 11:04 AM
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#10
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Senior Member
Join Date: Jan 2008
Location: New Hampshire
Posts: 283
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Quote:
Originally Posted by oldpoke76
30 amp breakers on the gen. They are NOT tripping, I reset them to make sure. I assume if they trip I would not have power to anything. What gets me is the fact the front AC will not even try to come on ( no fan, no hum no nothing) with the gen. I try it alone and not with the rear AC.
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Not sure on this but one of those 30 amp breakers on the genset goes to your main breaker panel and the other may control one of your ac's via the transfer switch...
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08-10-2011, 11:15 AM
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#11
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Member
Join Date: Oct 2002
Location: Brownsville Tx. 78526
Posts: 70
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In transfer switch,look where power cable connects.
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Ron
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08-10-2011, 11:16 AM
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#12
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Senior Member
Join Date: Jan 2008
Location: New Hampshire
Posts: 283
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Quote:
Originally Posted by oldpoke76
Where are the contacts located ?
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Follow your shore power cord into your rig...The first thing it sould be connected to is the transfer switch...there are relays in it that direct power from the genny or shore power to your main breaker panel and the 2nd ac if it is wired that way...Sometimes these relays get stuck...Sometimes giving the transfer switch a whack with a rubber mallet wakes it up (releases the stuck relay)...If you are comfortable using a voltmeter, check what is going in and coming out of the transfer switch with the generator running...
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08-10-2011, 11:39 AM
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#13
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Junior Member
Join Date: Dec 2008
Posts: 5
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Quote:
Originally Posted by movin-on
Not sure on this but one of those 30 amp breakers on the genset goes to your main breaker panel and the other may control one of your ac's via the transfer switch...
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Movin on.....You're a genius.... thanks.....My Onan has two breakers..One has a white toggle the other is black... I had both pushed to the rear, but when I pulled the white one forward and the black one to the rear all things work fine... never saw breakers that need to be in opposite directions. before. Oh well, my puzzle is solved. Thanks to all for your help.
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08-10-2011, 01:46 PM
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#14
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Senior Member
Join Date: Jan 2008
Location: New Hampshire
Posts: 283
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Quote:
Originally Posted by oldpoke76
Movin on.....You're a genius.... thanks.....My Onan has two breakers..One has a white toggle the other is black... I had both pushed to the rear, but when I pulled the white one forward and the black one to the rear all things work fine... never saw breakers that need to be in opposite directions. before. Oh well, my puzzle is solved. Thanks to all for your help.
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You're welcome...Glad I could help and it was an easy fix... 
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