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11-17-2018, 12:46 PM
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#1
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2 Rivet Member 
2018 27' International
Conroe
, Texas
Join Date: Aug 2018
Posts: 28
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Store/use switch not working
I just replaced my Group 24 Interstates with lithium batteries and added a battery disconnect switch. I also replaced the stock converter with a Progressive Dynamics 9160L for lithium batteries, as recommended by Battle Born.
Once I completed my installation and powered up the trailer, the store/use switch does not work either when plugged into shore power or disconnected from shore power. The switch will not click in either direction and the light on the panel is not illuminated.
My batteries are fully charged and everything in the trailer has power except the store/use switch. It appears this switch is stuck in the use mode. After reading other threads on the forum I suspect my problem may be the fuses on the relay switch are blown. have looked for the the relay switch to check the 5 amp fuses but have been unable to it on my 2018 27' International FB. I have looked under the bed, by the inverter, in the 12VDC distribution box to no avail.
Any other ideas where the relay switch might be or why switch is stuck?
Thanks,
Eric
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11-17-2018, 01:10 PM
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#2
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Rivet Master 
2012 30' International
1997 25' Safari
1967 20' Globetrotter
Burlington
, Ontario
Join Date: Jul 2009
Posts: 1,499
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I am only guessing. Mine is on the front wall about 8” off the floor. So check under the bed again In a place that is difficult to see and hard to get to.
__________________
Jim
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11-17-2018, 01:46 PM
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#3
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Rivet Master 
2007 22' International CCD
Corona
, California
Join Date: Jul 2013
Posts: 9,180
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In our rig, the fuses and use/store relay are mounted under the bed, all the way forward on the interior skin. Takes crawling under the bed to get to it after taking everything out of the storage area. It’s a huge pain to get to, and it’s dark and cramped under there.
__________________
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it. 
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11-17-2018, 02:01 PM
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#4
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2 Rivet Member
2018 27' International
Conroe
, Texas
Join Date: Aug 2018
Posts: 28
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I removed the entire bed top as I placed my new batteries there. The front right of the trailer has the inverter and the 12VDC distribution box. Nothing else there. See picture attached. 
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11-17-2018, 03:29 PM
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#5
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Rivet Master
2012 27' Flying Cloud
W
, New England
Join Date: Oct 2012
Posts: 7,402
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Odd. In mine - a 2012 27FB Flying Cloud - the relay is located exactly where your new lithiums are. Any chance the relay was removed/disconnected while installing the new batts?
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11-17-2018, 04:06 PM
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#6
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2 Rivet Member
2018 27' International
Conroe
, Texas
Join Date: Aug 2018
Posts: 28
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Quote:
Originally Posted by SteveSueMac
Odd. In mine - a 2012 27FB Flying Cloud - the relay is located exactly where your new lithiums are. Any chance the relay was removed/disconnected while installing the new batts?
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The picture you see is exactly what was under the bed. Nothing was removed from under the bed. It seems Airstream moves the relay around in any given model year.
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11-18-2018, 11:52 AM
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#7
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Stream of Consciousness
2014 27' FB International
Snoqualmie
, Washington
Join Date: Mar 2018
Posts: 9
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Stupid questions here... Are you on our off of shore power? Do you have the same problem either way?
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11-18-2018, 12:07 PM
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#8
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Rivet Master
2012 27' Flying Cloud
W
, New England
Join Date: Oct 2012
Posts: 7,402
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Quote:
Originally Posted by DTCOnyx
Stupid questions here... Are you on our off of shore power? Do you have the same problem either way?
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In the original post it’s mentioned that the problem exists whether on shore power or not.
This is puzzling. Where the heck is the relay? Could someone with the same year/make trailer flip theirs off/on and tell us where the relay sounds like it’s located based on the click?
Alternatively - is there a wiring diagram somewhere?
Dang!
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11-18-2018, 01:09 PM
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#9
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Rivet Master
2015 27' Flying Cloud
Newberg
, Oregon
Join Date: May 2015
Posts: 1,052
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I think you can call customer service at AS and they can take your vin and then tell you where it is. It may take some telephone tag, but they will figure it out.
Mike
__________________
2015 27ft FC FB
WBCCI #3960 
2019 F150 ecoboost
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11-18-2018, 02:05 PM
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#10
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2 Rivet Member
2018 27' International
Conroe
, Texas
Join Date: Aug 2018
Posts: 28
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I have the wiring diagram from my owners manual that shows the relay in the schematic. But the schematic does not show the actual location of the relay. I am going to call Jackson Center on Monday. They are usually quite helpful on these type issues.
Eric
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11-18-2018, 09:07 PM
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#11
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1 Rivet Member 
2013 27' FB Classic
flemington
, New Jersey
Join Date: Oct 2014
Posts: 9
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under the road side bed platform, all the way forward is a small panel with 4 screws. My 2013 27fb classic has inverter , solenoid and misc. wiring in that compartment.
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11-19-2018, 10:04 AM
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#13
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Senior Member
2012 27' FB Eddie Bauer
Sparks
, Nevada
Join Date: Mar 2014
Posts: 1,116
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The connectors right at my use-store switch we’re corroded, created the same symptom. You couldn’t see it until you pulled the connectors off of the terminals.
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11-19-2018, 12:33 PM
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#14
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Another stupid question...
Why a relay on the use/store switch...is the actual switch in another location? If so maybe ck the switch.
FWIW...ours is wired directly to the battery.
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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11-20-2018, 09:50 AM
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#15
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2 Rivet Member
2018 27' International
Conroe
, Texas
Join Date: Aug 2018
Posts: 28
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Just to give everyone an update Jackson Center has informed me the relay switch is behind the AC breaker panel. I will give an update once I actually locate it and test it. Thanks for all the input.
Eric
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11-20-2018, 03:52 PM
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#16
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GLCMRANGER - Sue
2016 25' International
Littlestown
, Pennsylvania
Join Date: Feb 2014
Posts: 334
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When you Identify the Switch Relay, there will be 2 5amp fuses on the top. I bet you blew one of the fuses when you were reconnecting your batteries...... it happened to me.
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11-27-2018, 03:04 PM
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#17
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2 Rivet Member
2018 27' International
Conroe
, Texas
Join Date: Aug 2018
Posts: 28
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I finally located the use/store relay on my Airstream. It is actually attached to the back of the AC panel where the converter is located. I checked all the connections and it appears the red wire (power wire to the switch) appeared to be a little loose. I tightened it up and the use/store switch works perfectly. 
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11-27-2018, 03:28 PM
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#18
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Rivet Master
2012 27' Flying Cloud
W
, New England
Join Date: Oct 2012
Posts: 7,402
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Congrats!!
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11-28-2018, 07:54 PM
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#19
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Stream of Consciousness
2014 27' FB International
Snoqualmie
, Washington
Join Date: Mar 2018
Posts: 9
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I have the same model AS as you do. Can you help me understand where the AC panel is.
Thank you... Dana
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11-28-2018, 08:31 PM
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#20
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2 Rivet Member
2018 27' International
Conroe
, Texas
Join Date: Aug 2018
Posts: 28
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The AC panel is located at the bottom of the pantry cabinet. There is a black face plate covering the circuit breakers.
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