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Old 09-05-2016, 04:26 PM   #1
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Converter??? Or what??

Hey folks. Just bought my first Motorhome, a 2001 Georgie Boy Cruise Master. Took it out for the first time this weekend. Everything was good until the second day when I noticed my carbon monoxide units beeping, my fridge throwing a code and my lights were very dim. I know the converter is suppose to convert these over but I don't think it's working. I'm figuring everything was good until the batteries started to drain.
Question is, how do you check a converter to make sure it's working? The 2 30 amp fuses on it are good. Is there another fuse to check?
There is a plug that comes off the converter that I plugged in and it seemed to somewhat charge the batteries. It gave me a little juice but would not last long.
Is the converter suppose to make a noise? It isn't even humming or anything?
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Old 09-05-2016, 04:42 PM   #2
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Some converters are 'hard wired' to an 120V AC circuit breaker and some use a standard electric plug.

Sounds like yours is a plug in style
With it being unplugged the RV Batteries were supplying ALL 12V DC demands until they got drained

When you plugged converter power cord in it tried to charge batteries
Previous owner may have unplugged converter because it is bad

With 120V AC power to converter (plugged into a working outlet) the converter should have a 12V DC output of 13.2V MINIMUM. Less than that and converter has failed. (readings taken at converter terminals where battery cables connect with battery disconnected)

If batteries are deeply drained converter may go into 'overload' ---no DC output
So disconnect batteries before testing and if necessary recharge batteries via portable charger......at least until you get converter functioning or replaced

Just FYI
Those 2 30A fuses are 'reverse polarity' fuses.
They blow when batteries are connected backwards
If blown the batteries can not feed DC Dist Panel and converter can not recharge batteries
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Old 09-05-2016, 04:57 PM   #3
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Ok, kinda feel stupid now. I see a 110 outlet in where all my power stuff is. The converter WAS NOT plugged in. So I'm guessing the converter was not working at all the first day.

Thanks for the reply
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Old 09-05-2016, 10:06 PM   #4
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One other thought.... some smoke alarms.. including carbon monoxide alarms have a limited shelf life based on the chemicals that make up the basic design of the alarm... when alarms have ""timed out"" they will start to chirp... and they have power and 12V's, the only way to service them is to replace them.... I've had to do this in my coach, could you be experiencing this as well....
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Old 09-07-2016, 09:23 AM   #5
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That is a good thought but my fridge was throwing a code, my wall mounted thermostat was not functioning either. I pulled the positive wire out of the converter, with it plugged in I tested that output with a multimeter. There was absolutely nothing, nota, zero reading. I'm pretty sure it is shot. I'm going to order a new one.
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Old 09-07-2016, 10:00 AM   #6
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Another Possibility Maybe?

That last comment you made about the frig and thermostat reminded me about a recent problem on my 1996 Discovery. Although I didn't test them individually, replacement of my four six-volt house batteries solved the problem. Just a thought
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Old 09-08-2016, 12:46 PM   #7
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Speaking of house batteries, I have 4 12volt deep cycle in mine. PLUS my cranking battery. Is it really necessary to have 4???
We always camp were there is electric service so I don't see why I would need 4. I do have bigfoot jacks but I would think 2 batteries would be enough. What are your thoughts on this?? Is 4 house batteries normal for a motorhome??
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Old 09-08-2016, 12:50 PM   #8
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Quote:
Originally Posted by LVFISHN View Post
Speaking of house batteries, I have 4 12volt deep cycle in mine. PLUS my cranking battery. Is it really necessary to have 4???
We always camp were there is electric service so I don't see why I would need 4. I do have bigfoot jacks but I would think 2 batteries would be enough. What are your thoughts on this?? Is 4 house batteries normal for a motorhome??
Yes, quit normal for 4 house......if not more........to give the option for "All" to camp off the grid if they choose.......yes, you can cut back to 2 house if you choose.
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Old 09-08-2016, 01:12 PM   #9
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Most RV's I have owned and those I know have 2 house batteries. This is plenty for normal use where you don't do a lot of boon docking.
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Old 09-08-2016, 03:46 PM   #10
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That is my intentions when these go bad. I want to just use 2. We would prob never boon dock. if we did it would be for 1 day or less and I have a generator.
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