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05-09-2019, 05:40 AM
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#1
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Established Member
Join Date: Jun 2016
Location: DeLand
Posts: 13
M.O.C. #18723
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No 12 Volt power when unplugged from 120
My 2010 3400rl is not getting any 12 v when I unplug the 120v. All the fuses & breakers in panel (Bathroom) test good. Battery load tested Good. Is there a fuse that I'm missing?
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05-09-2019, 06:25 AM
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#2
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,707
M.O.C. #7992
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Check your battery disconnect. If the key can not be pulled out it should be in the correct position to supply 12V to the unit.
__________________
2006 3000RK
2009 Ram 2500
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05-09-2019, 06:53 AM
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#3
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Established Member
Join Date: Jun 2016
Location: DeLand
Posts: 13
M.O.C. #18723
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Thanks Jim. I did check the battery disconnect, seems to be functioning. Turned it off and on, seems good.
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05-09-2019, 08:40 AM
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#4
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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The wording is confusing, however. If you can take the key out it's turned off.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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05-09-2019, 09:49 AM
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#5
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Established Member
Join Date: Jun 2016
Location: DeLand
Posts: 13
M.O.C. #18723
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Sorry, but yes it is turned on.
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05-09-2019, 10:07 AM
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#6
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Montana Master
Join Date: Sep 2017
Location: Tacoma
Posts: 1,567
M.O.C. #20475
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You need a volt meter and start testing 12 volt coming from the battery into the rest of the Rig. just because the battery cut switch seems to functioning does not mean that it is working. Do you have volt meter?
__________________
Bob & Carol Washington St
2017 HC HM352RL 2018 Dodge 3500 laramie CC LB 4x4
Curt Q25 with puck system, Factory air bags
Happy Trails
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05-09-2019, 11:23 AM
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#7
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Established Member
Join Date: Jun 2016
Location: DeLand
Posts: 13
M.O.C. #18723
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Yes, I have a meter.
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05-09-2019, 11:51 AM
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#8
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Montana Fan
Join Date: Jan 2019
Location: Sun City
Posts: 408
M.O.C. #23256
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Could the fuses on the back on your charger/converter affect this? I know it won't charge the batteries if they are blown, but I don't know they would prevent power from getting from your batteries to the coach if they are blown.
On our 2008 3400RL, the inverter is located under the bottom step going up to the bedroom. The fuses should be on the end of the charger/converter that is facing you when you take off the wooden grate.
__________________
Dave in AZ
2008 Montana 3400RL
2008 Dodge Ram 3500 Diesel Dually
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05-09-2019, 12:01 PM
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#9
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,171
M.O.C. #6433
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Oops! Didn’t read the whole post.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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05-09-2019, 05:36 PM
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#10
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Established Member
Join Date: Jun 2016
Location: DeLand
Posts: 13
M.O.C. #18723
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I'll check those fuse's. Did load test batt, it's good. The unit has been plugged in at my house. Was good when we parked it. We loaded up and unplugged and there was no 12v for the frig or anything else. Just had a hour trip so we were ok. But we'll be getting ready to head out west!! Thanks for your help....
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05-09-2019, 06:47 PM
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#11
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Montana Fan
Join Date: Aug 2012
Location: Fowler
Posts: 414
M.O.C. #12748
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Does your landing gear operate?
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05-09-2019, 10:29 PM
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#12
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,702
M.O.C. #12947
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It sounds like your auto reset breaker has had a total failure, opened up and has not reset itself. That would essentially be just like having the battery disconnect switch open(off).
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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05-10-2019, 05:13 AM
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#13
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Established Member
Join Date: Jun 2016
Location: DeLand
Posts: 13
M.O.C. #18723
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Yes, landing gear is working.
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05-10-2019, 05:15 AM
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#14
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Established Member
Join Date: Jun 2016
Location: DeLand
Posts: 13
M.O.C. #18723
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Do you know where I can find that "auto reset breaker"?
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05-10-2019, 07:50 AM
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#15
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Montana Fan
Join Date: Aug 2012
Location: Fowler
Posts: 414
M.O.C. #12748
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Try to bypass the disconnect switch, it could be faulty causing an open condition. Just guessing.
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05-10-2019, 08:13 AM
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#16
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,953
M.O.C. #5651
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Richard, the auto reset breaker is on the back wall of the battery compartment. Search here and there are also pictures some have posted.
__________________
Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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05-10-2019, 02:46 PM
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#17
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Montana Fan
Join Date: Jan 2009
Location: Mount Holly
Posts: 162
M.O.C. #9072
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Try disconnecting the cables from your battery clean connection and reconnect.
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05-15-2019, 02:27 PM
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#18
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New Member
Join Date: Dec 2008
Location: CRESTVIEW
Posts: 2
M.O.C. #9002
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My similar problem was corroded terminal eye connectors at the battery. Steel wool fixed it.
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06-16-2019, 02:32 PM
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#19
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Established Member
Join Date: Jun 2016
Location: DeLand
Posts: 13
M.O.C. #18723
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Update: Sorry for the delay in responding. Finally found time to get back into the problem and found that a 50A breaker on the wall in the battery compartment checked out good but when on 12 volt it would break. R&R and all is fine now. Thanks for all the response's....
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