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05-04-2012, 10:17 PM
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#1
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Senior Member
Tiffin Owners Club
Join Date: Oct 2011
Location: Holly Springs, MS
Posts: 100
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Air Conditioner Not Running on Generator Power
My rear a/c unit runs fine on both 50amp shore power and when running on generator power. However my front unit won't come on when on gen power. I can hear the "click" of the thermostat when I turn the control cooler but nothing runs. On 50amp shore power it works perfectly. Anyone have an ideas as to what to check? Thanks in advance for your time.
36' Allegro Bay Ford Triton V10
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05-04-2012, 10:40 PM
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#2
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Senior Member
Monaco Owners Club Tiffin Owners Club
Join Date: Mar 2001
Posts: 315
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There should be 2 breakers on your genny. Make sure both are flipped to on.
DICK
__________________
2010 Phaeton QTH 40'
2017 GMC Sierra Crew Cab pickup 4X4
Recon, D,2/7, 1st Cav '65
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05-05-2012, 07:06 AM
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#3
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,704
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If you look closely, I suspect you will find a few other things aren't working as well. Either the generator's own breaker for one power "leg' is tripped, or your auto transfer switch has a stuck relay and isn't switching from shore to genset on one side.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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05-05-2012, 10:06 PM
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#4
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Senior Member
Tiffin Owners Club
Join Date: Oct 2011
Location: Holly Springs, MS
Posts: 100
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Thanks
Thanks for the help. It was indeed one of the gen breakers. Not sure what tripped it originally but it's staying on now. Nice to have this forum for new RVers like me.
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05-09-2012, 09:25 AM
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#5
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Junior Member
Join Date: May 2012
Posts: 1
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Same problem! No AC on Gen power :(
I have the same problem, but none of the breakers are flipped.
The washing machine also won't even power on, much less work. I know there are some outlets also not functioning.
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05-09-2012, 02:34 PM
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#6
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Senior Member
Country Coach Owners Club
Join Date: Jan 2006
Location: Northern California
Posts: 5,868
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Quote:
Originally Posted by JNTx3
I have the same problem, but none of the breakers are flipped.
The washing machine also won't even power on, much less work. I know there are some outlets also not functioning.
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See the second item in Gary's quote. It is likely your transfer switch.
This assumes that your problem is also with genset power only. If your problem is with both shore or genset power, then check the inverter for popped breakers and for a GFI outlet that may be tripped.
__________________
Dean
1995 38' CC Magna #5280 **** Sold after 21 years of enjoyment.
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05-10-2012, 08:21 AM
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#7
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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If your rig is 50 amps. Then not only the Front A/C but some other stuff is affected, and it';s a breaker on the generator.
If your rig is 30 amps, check the FRONT/REAR switch that selects which A/C works on 30 amps. It may be in the "REAR" position,
The REAR A/C is powered via the generator directly on 30 amp units with 2 A/C's when running on Generator (Of course they may have wired it backwards) . the front one via the aforementioned switch, (Both on shore and generator power). Said switch does not exist on 50 amp rigs.
__________________
Home is where I park it!
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05-10-2012, 12:10 PM
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#8
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Senior Member
Join Date: Apr 2012
Location: Louisville, KY
Posts: 1,489
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Junction box
Also, most motorhomes have a junction box coming off the generator that goes to the transfer switch. I had a wire nut fall off there once and lost a leg on the generator.
__________________
Mark Anderson - FMCA 351514 - NRVIA Certified Level 2 Inspector
Louisville, KY
2011 Tiffin Phaeton 40QTH
2006 Jeep Commander
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05-11-2012, 06:30 AM
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#9
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Registered User
Join Date: Aug 2011
Location: Western New York
Posts: 899
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Damn hair dryers and ac's running at the same time will trip those breakers often.
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