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Old 04-20-2014, 05:41 AM   #1
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Question Battery change out

Has anyone ever changed batteries in a 2006 Phaeton QSH? We just got this RV (new to us) and I'm afraid I'm on a steep learning curve. My batteries appear to be fully charged but still can't open slide-outs. A few friends say it's the battery amp hour capacity causing this problem. The batteries may be 8 years old so it may be time to change them out. Anyone run across the problem before?

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Old 04-20-2014, 05:49 AM   #2
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I'd say if they are fully charged that's not the problem although they are getting some age. Are you suppose to have your rig running or just the key on. Have you tried plugging it in? Are they trying to come out if not possible fuse.

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Old 04-20-2014, 05:54 AM   #3
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Way different coaches, But, mine says to have the engine running when putting slides in or out.
2004 National Sea Breeze LX8375, Towing a 2012 Liberty.
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Old 04-20-2014, 04:01 PM   #4
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Mine requires the rig to be running as well when the slides are operating.

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Old 04-20-2014, 04:42 PM   #5
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Mine can't be running for the slides to work.
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Old 04-20-2014, 08:32 PM   #6
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Also, some slides require the parking brake to be set.
Jan and Bob

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Old 04-20-2014, 08:35 PM   #7
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Different motorhome, but ours requires the air levelling system power to be turned first.
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Old 04-20-2014, 08:43 PM   #8
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If none of the above work and you think it is batteries...remove the negative post coming from your battery bank for 24 hours. Then measure with a voltmeter at the BATTERY posts for voltage. A good reading would be 12.6V or better. A bad reading would be 12.2V or less. Something in between is showing wear.
Frankly...I doubt it is your batteries...unless they are really dead, you should be seeing something TRYING to happen...but it is a useful exercise for you anyway...and you should check the distilled water levels while you're there!
Good luck!
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Old 04-21-2014, 06:31 PM   #9
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Mine says to have the engine running, but they work fine with it off.
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Old 04-21-2014, 06:47 PM   #10
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I continue to be fascinated by the statement: "engine must be running to deploy slides," really????? Can someone give me the definitive explanation of why your engine has to be running--I am all ears on this one.
Ignition on/aux, HWH on, jacks down, parking brake on, interlock disengaged, etc., are just some of the protocals for slide ops--suggest you find a local RV expert to survey your rig with you. Eight year old bats [wet cell] are at or near the end of their useful life but think we are all mostly guessing about your particular situation.
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Old 04-22-2014, 11:56 PM   #11
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The slide motor is a heavy drain on the batteries causing a voltage drop. With the engine running the alternator is supplying power to the batteries making it easier on the slide motor. At least that's the way it works on my coach. My slide operates fine just on the batteries alone. However, with the shore line connected or the engine running I can tell the difference.

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Old 04-23-2014, 07:00 AM   #12
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On my 2009 Phaeton, my slides won't operate with the engine running but I do have to have the key turned to accessory. Different years were wired differently unfortunately. So my suggestion is to plug in the coach, turn the key to accessory and then try to open the electric slides. Over on the Tiffin RV Network it seems there are a lot of combinations for the different model years. Key on accessory, engine running, etc. However, I will say this, if those batteries are 8 years old they probably need replacing for sure. My first set died at 4 years because I let them drain too low too many times while boondocking before I became educated to set the inverter to start the generator when they reach 12.0 volts. They may charge fully but won't hold a charge for any length of time.
Mel (Melanie) and Harry
2009 Tiffin Phaeton 40QTH
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Old 04-23-2014, 07:31 AM   #13
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My front slide will operate with engine on or off. However my rear slide will not operate with engine running. Not sure why. But I like to have shore power on because it does pull some juice.
Oh also found out my front slide will not operate if someone leaves a basement door on that side open. Won't mention any names.
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Old 04-23-2014, 08:11 AM   #14
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Bottom line, batteries 8 years old need to be replaced. 4 years is iffy, 5 years pushing the limit, 8 is living on borrowed time with no ability to store amperage. Plug into shore power or run generator to operate slides.

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