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Old 01-22-2016, 08:54 PM   #1
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American Eagle shore power issue

I have a 2003 American Eagle which has no house power without RV running. I knew my house batteries needed replacing soon as they werent holding a charge. I took the batteries out and found the fluid levels where very low so I topped them off. Since doing this they dont seem to take a charge at all. Today I connected to shop 50amp shore power (validated it was correctly wired). I expected shore power to handle the coach regardless of batteries, am I wrong?? I check fuses that I could locate....

any input is appreciated

Doug and Sheila
2003 American Eagle w/20ft trailer we use for motorcycles or SUV
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Old 01-22-2016, 09:05 PM   #2
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Batteries can be bad and hold down he converter/charger. However, I would first check to see if the converter/charger is working. Check it with a voltmeter. You should see around 12vdc (but could be much lower due to state i
If the batteries) and it will rise about a volt or so with charging occurs vs not.

Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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Old 01-23-2016, 11:44 AM   #3
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I would start by looking at your automatic transfer switch which I believe your age coach has. The ATS is what manages your electrical source - shore power, generator or battery. If shore power is going to the ATS but not out of the ATS then it has gone south. It can be rebuilt or replaced. If you are getting power through the ATS, then the problem is your charger/convertor/inverter. Power from the engine alternator does not go through the ATS and sends power directly to your 12 volt system so lights in the coach will work.

BTW- batteries that have had a lot of fluid boiled out of them are usually so damaged that the batteries need to be replaced.

Good luck.
Bob & Joan Alexander, 2010 Tiffin Phaeton 36 QSH, 2013 Jeep Wrangler (toad)
Lobo & Juniper (woof, woof)
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Old 01-23-2016, 12:13 PM   #4
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To see if shorepower is providing current to the batteries, use your voltmeter (a required tool for all Rvers) at the house battery terminals while shorepower is connected and your house battery switch is on.

If you do not read 14.4 dcv then the Shore power, Power Cord, transfer switch, Inverter/Charger, Battery switch or big fuses between the Inverter and Battery is/are not working.

Start at the shore power source and measure output of each item listed above.

If you do read 14.4 volts at the battery terminal connectors, then the battery is likely toast.

You did not mention if running the Generator would charge the batteries. If it does, then the transfer switch may be frozen or you do not really have shore power entering the coach (check the source and the cord).

Do not assume anything when dealing with electricity flow.
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Old 01-23-2016, 02:31 PM   #5
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power, shore power

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