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Old 11-21-2019, 08:52 AM   #15
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I would expect to see Absorb charging. This is further confirmation that your house battery voltages are low. Either due to bad batteries, bad cable connections or excessive current draw.

I would duplicate what you just did. Disconnect the shore power and let the inverter run for an hour. Then use the Magnum interface to read the voltage. Also use a voltmeter to read the voltage on the house batteries' terminal.

Its only a guess, but a reading below 12.6 would again confirm lower than expected battery voltage.

At that point, you will need a clamp meter to measure the current flowing through the house battery ground cables. If that number is small, then your batteries are not holding charge and need to be replaced.
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Old 11-21-2019, 03:59 PM   #16
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I will hopefully do these test tomorrow weather cooperating. I do have a clamp test meter. Would the solenoid that has been mentioned be located in the bay with the shore power cord. I have seen one mounted to the back wall. I have had the battery tray slid out a couple of times lately perhaps I've pulled a cable lose while opening or closing the tray and didn't notice.
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Old 11-21-2019, 04:21 PM   #17
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At this point, I don't think there is a solenoid / bird problem. Most likely, bad batteries.
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Old 11-21-2019, 06:14 PM   #18
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Quote:
Originally Posted by patrickemb View Post
Was raining today so I wasn't able to visually check battery voltage on the batteries. I was float charging and showed 13.5 volts and salesman switch showed same. I did have to take it to the tire shop to fix a slow leak on a tire. When I started the coach the inverter was off, pushed the button and turned it on. Went to the tire shop about 4 blocks away, stopped the engine while they did the repair. I was there 30 to 45 minutes. Started engine came home. Plugged back into 50 Amp shore. Checked ems and it was bulk charging. No longer than I was away that doesn't seem right to be bulk charging or is it?
As stated above you do not have an EMS system. If it says so on the panel it is miss identified. You have an electric control panel. Some coaches have a LOAD SHEDDING SYSTEM that the manufactures call an EMS. It has caused much confusion on RV sites with novices. EMS discussions on RV sites is an Electric Management Protection System. Google Progressive industries EMS. It protects from multiple AC electric related problems. You plug you RV into it or have it hard wired into the RV. I does not come from the factory.

Surge protector is another over used/misused term.
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