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Old 03-04-2019, 08:01 PM   #1
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Inverter or Batteries

2018 Cardinal 3825 FL: Went to put the slides in and go and only the two sofa slides would come in? The other three slides that are hydraulic and the hydraulic leveling system wouldn't work. Seems the inverter was turned off? Charged the two battaries and will check it in the morning. If there are still issues? How will I know if it is the inverter or battaries?
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Old 03-05-2019, 06:48 AM   #2
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First off, it would be the converter, not inverter. Converter switches AC 120V to DC12V to power 12V accessories and charge your batteries. Inverter does just the opposite to power your refridgerator while disconnected from Post.

Make sure your battery disconnect switch isnt turned off. It does not disconnect slides etc, but does disconnect the inside 12V appliances and the connection from the converter to keep your batteries charged. If you can remove the red key, it is off. Turn it 90 degrees. Happened to me is how I know....

Good luck
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Old 03-05-2019, 07:49 AM   #3
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On my fiver the slides and leveling all run on 12 volt. Not 110. All hydraulic.

One should carry a voltmeter in the rv to check batteries unless you have installed one.

Your batteries should read about 12.7 volts or so fully charged. Measure them several hours after charging. About 12 volts should be the absolute minimum for batteries or you are damaging them.

While charging the inverter sends 13.5 or more volts to the battery.

That is one way to check the converter.

My front jacks work with the main disconnect turned off. Do not know about the slides and rear levelers. Never tested them.
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Old 03-11-2019, 09:30 AM   #4
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Thank you all!
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Old 03-11-2019, 11:16 AM   #5
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the two front sofa slides are electric and are not connected to the hydraulic slides. if the hydraulic slides do not work it is probably one of two things: low battery or blown fuse. are you at a campground that has electric power. if so, plug into it and let the converter supply some additional 12 volt power. or you can do the same thing if you have a generator. third option would be to use jumper cables from your truck to the house batteries to get a boost to them. on our 3825 the lippert hydraulic slides are directly connected to the batteries so the battery disconnect switch does not affect the operation of the slides. do you have a remote for the slides, awnings, and outside lights? if you do the control unit for the lippert system is up in the front compartment over the batteries. it has the fuses for the slides, awning, and lights that it controls. these fuses re not in the fuse control panel. you might want to check those fuses. let us know how things get resolved
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Old 03-18-2019, 02:18 PM   #6
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I would never open or close slides or use leveling jacks without shore power or generator. Batteries also need to be fully charged. These are 12 volt systems and is a huge amperage draw! My second inverter and I have four Trojan 6volt batteries and with Residential refer and all the computers/TV's/etc. this works for me. (Solar and small 2k gen)
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Old 03-20-2019, 10:18 AM   #7
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so what happened?
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Old 03-21-2019, 03:45 PM   #8
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Sorry it took so long. The conver
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Old 03-21-2019, 03:49 PM   #9
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Sorry the converter switch was turned off. Turned it back on and also jumped the batteries. Once it charged it works great. Thank you all and especially the lesson on converter and. inverter.
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Old 03-21-2019, 04:43 PM   #10
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Quote:
Originally Posted by Stepdad1234 View Post
I would never open or close slides or use leveling jacks without shore power or generator.
Can't speak to leveling jacks but for my trailer the manual specifically states to "start the generator" (which I interpret as "make sure to have shore power connected") before extending or retracting slide (I only have one).

When I've had to retract my slide without power connected it is quite clear that the motor is running a lot slower and the process takes longer. More time, more drain.
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Old 03-22-2019, 06:30 AM   #11
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Originally Posted by TitanMike View Post
Can't speak to leveling jacks but for my trailer the manual specifically states to "start the generator" (which I interpret as "make sure to have shore power connected") before extending or retracting slide (I only have one).

When I've had to retract my slide without power connected it is quite clear that the motor is running a lot slower and the process takes longer. More time, more drain.
I've never heard the requirement to be on shore power. As far I am concerned, as long as your onboard battery is fully charged, there is no problem operating slides/jacks. I open the slides partially everytime we are at rest area, etc just to get around in the trailer.
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Old 03-22-2019, 06:32 AM   #12
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Sorry the converter switch was turned off. Turned it back on and also jumped the batteries. Once it charged it works great. Thank you all and especially the lesson on converter and. inverter.
Glad you got it figured out!!! And there was nothing to fix so, didnt cost you anything either. time to get out and camp!
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Old 03-22-2019, 11:23 AM   #13
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not to beat a dead horse, but what is the converter switch? do you mean the battery disconnect switch? the one with the removable red key? or do you mean the converter circuit breaker in the electrical panel?

as far as moving the slides / legs using battery power alone i do it when i have to. i try to keep the batteries fully charged and the 2 12 volt batteries have sufficient power to move the slides. did you know that the lippert control panel that operates the level up legs also has a battery voltage display? i use it to monitor the battery voltage and charge.
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Old 03-22-2019, 12:47 PM   #14
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Originally Posted by djousma View Post
I've never heard the requirement to be on shore power. As far I am concerned, as long as your onboard battery is fully charged, there is no problem operating slides/jacks. I open the slides partially everytime we are at rest area, etc just to get around in the trailer.
I read it in the manual that came with my trailer.

I pretty much do what you do when traveling but when I get to a camping spot I either plug in or start generator before opening slide. Figure I might as well begin the night with full batteries if boondocking.
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Old 03-22-2019, 05:36 PM   #15
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I do the same because I have 2 slides that are electric and three that are hydraulic.
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Old 03-22-2019, 06:07 PM   #16
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Originally Posted by whj469 View Post
I do the same because I have 2 slides that are electric and three that are hydraulic.
I'd wager that the power pack for the hydraulics draws a fair amount of power while it's running.
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Old 03-22-2019, 07:17 PM   #17
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I don't have the largest slides in the world but with 2 100A Battleborns and 700W of solar, I don't worry about it for a second not being hooked up. In fact, even when I dry camp, I rarely even bring a generator.
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Old 03-22-2019, 10:32 PM   #18
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There is a 30 AMP fuse in the power pack line.
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Old 05-08-2019, 03:12 PM   #19
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As the original poster I report: If the 2018 Cardinal 3825 FL sits for a few days, the auto leveling system and 3 of the five slides that are hydraulic will not work. I have to charge the batteries in the fiver from my truck for them to work. Almost as soon as I jump the fiver it works? On the control panel it indicates 13.6 V?
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Old 05-08-2019, 03:13 PM   #20
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It is plugged into 50 Amp.
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