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06-08-2016, 08:44 PM
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#1
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Senior Member
Join Date: Nov 2015
Location: Manhattan ks
Posts: 153
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Air Conditioner and Battery Question
I have a 2016 Eagle HT. I've used the air conditioner many time while spending time earlier this year in South Texas. But, I was always connected to shore power. So, the other day I fired up my generator and connected it to the trailer. But I had my battery disconnected. And when I tried to turn on the A/C nothing happened. But I was getting 120 volts at my 120 volt receptacles in the trailer. Went back out to the battery and turned on the battery disconnect switch and went back in and turned on the A/C and it came on just fine. So I guess my question is, is this normal. I was surprised that the A/C wouldn't work without the battery connected????
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06-08-2016, 08:52 PM
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#2
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Senior Member
Join Date: Dec 2010
Posts: 2,229
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I think the thermostat requires the 12 volt system.
__________________
2019 Airstream Flying Cloud 27FB
2012 321RLTS Eagle (sold)
2011 F350 CC SB
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06-08-2016, 09:50 PM
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#3
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Senior Member
Join Date: Dec 2014
Location: Akron
Posts: 3,209
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In a stick house A/C system the thermostat works on low voltage supplied by a small transformer in the HVAC system wiring. In an RV, the low voltage necessary for control is supplied by the RV's 12-volt house power system.
So dzwiss is absolutely correct, you need 12-volts to make the A/C work!
__________________
Rob R.
Akron, OH
2014 Seneca 37TS
Toads: 2019 Ford Edge ST or 2013 Ford Focus ST
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06-09-2016, 05:35 AM
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#4
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Senior Member
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
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You should not need the battery connected to run the air conditioner while connected to a generator. Your converter should be supplying the 12V system.
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
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06-09-2016, 05:40 AM
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#5
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Site Team
Join Date: Nov 2012
Location: Clearwater, FL area
Posts: 5,196
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Quote:
Originally Posted by tnchuck100
You should not need the battery connected to run the air conditioner while connected to a generator. Your converter should be supplying the 12V system.
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2x
Don
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06-09-2016, 06:50 AM
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#6
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Junior Member
Join Date: Oct 2015
Location: Cypress
Posts: 26
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Guessing he had used the battery disconnect switch, think only the smoke & propane detectors get power then...
Just came back from a trip where one of the folks converter went out, eventually the batteries died and a/c then quit... he ended up using a battery charger to get through the rest of the trip... I now keep a 10amp charger handy...
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2016 Pinnacle 38FLSA
2015 2500HD Duramax
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06-09-2016, 07:19 AM
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#7
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Senior Member
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
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Quote:
Originally Posted by mjgood
Guessing he had used the battery disconnect switch, think only the smoke & propane detectors get power then...
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1. The smoke detector has its own 9V battery and does not use the 12V system.
2. The propane/CO detector uses the same 12V system as the rest of the camper. The battery disconnect switch will remove power from the detector if there is no converter output.
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
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06-09-2016, 07:25 AM
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#8
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Senior Member
Join Date: Jan 2016
Location: Slidell
Posts: 142
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Battery switch turned off the 12v to the thermostat. This is normal operation. Must be on to work.
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2015 F350 4wd 6.7 Powerstroke, Firestone Airride
CM custom hauler bed
2016 Northpoint 377RLBH
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06-09-2016, 11:54 AM
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#9
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Senior Member
Join Date: Sep 2015
Location: Sioux Falls
Posts: 348
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Our trailer is the same way. We found that even after shore power is connected, we must have the battery switch on. I'm guessing it's because those A/C appliances still get their power from the inverter, and need DC power.
Quote:
Originally Posted by tld
I have a 2016 Eagle HT. I've used the air conditioner many time while spending time earlier this year in South Texas. But, I was always connected to shore power. So, the other day I fired up my generator and connected it to the trailer. But I had my battery disconnected. And when I tried to turn on the A/C nothing happened. But I was getting 120 volts at my 120 volt receptacles in the trailer. Went back out to the battery and turned on the battery disconnect switch and went back in and turned on the A/C and it came on just fine. So I guess my question is, is this normal. I was surprised that the A/C wouldn't work without the battery connected????
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__________________
U.S. Air Force (1979 to 1994)
2016 Jayco 29.5BHDS
2015 Ram 2500 (6.7L Cummins Diesel)
Queen Creek, Arizona
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06-09-2016, 03:09 PM
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#10
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Senior Member
Join Date: Nov 2015
Location: Manhattan ks
Posts: 153
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Reply from Jayco
Well, I contacted Jayco and here is their response taken from an email they sent me. "I have asked our line engineers about your concerns and with a response from them I can tell you that no the A/C will not function without the battery being connected. The thermostat gets its power from the battery at all times not the converter." So, there you have it. If your battery is dead, no A/C for you!!
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