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Old 08-16-2016, 09:31 PM   #1
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Solar Panel Stopped Working

Recently installed solar panel and has been working great. Following a two week trip - the trailer was parked for maybe a week and the batteries were dead. Looked at the interior solar panel and it was showing some numbers but there were no lights like there normally would be. I checked the connection on the top, read the manual, checked the connections behind the interior panel, and all connections around the battery. Everything seems fine. Also cleaned glass.

Anyone more familiar with solar have any suggestions.
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Old 08-17-2016, 05:48 PM   #2
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Recently installed solar panel and has been working great. Following a two week trip - the trailer was parked for maybe a week and the batteries were dead. Looked at the interior solar panel and it was showing some numbers but there were no lights like there normally would be. I checked the connection on the top, read the manual, checked the connections behind the interior panel, and all connections around the battery. Everything seems fine. Also cleaned glass.

Anyone more familiar with solar have any suggestions.
Without some voltage readings it is hard to offer any advice. Voltage readings in and out of the solar charge controller during daylight? Controller had numbers but no lights, what were the numbers? What were the lights that you expected to see? Does the battery charge normally using the converter/shore power?

Also, anything left on during the week in storage that would discharge more than the solar could replenish?
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Old 08-17-2016, 07:37 PM   #3
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Solar Not Working

Thank You. I will get back to you regarding each point you made.
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Old 08-19-2016, 04:42 PM   #4
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Solar Problems

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Thank You. I will get back to you regarding each point you made.
So you put me on the right path. It seems if the battery gets too low it will not accept a charge from the solar. I plugged it in for a day, then unplugged it, and the solar is running fine.

I still do not know what drained the battery so bad in the first place but at least the problem has been redefined.

Thank You.
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Old 08-19-2016, 04:45 PM   #5
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Without some voltage readings it is hard to offer any advice. Voltage readings in and out of the solar charge controller during daylight? Controller had numbers but no lights, what were the numbers? What were the lights that you expected to see? Does the battery charge normally using the converter/shore power?

Also, anything left on during the week in storage that would discharge more than the solar could replenish?
The numbers were the led voltage reading which was 20+, and the lights were power, charging, and state of battery. And yes, it charges normal using the converter.

Thanks for your help. As I said prior it put me on the right path.
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Old 08-19-2016, 05:42 PM   #6
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The numbers were the led voltage reading which was 20+, and the lights were power, charging, and state of battery. And yes, it charges normal using the converter.

Thanks for your help. As I said prior it put me on the right path.
Solar panels in of themselves are pretty much bullet proof. Actually you can shoot a hole through it and it will still work, only with a small diminished capacity. All those little silver traces are redundant wiring in the panel to keep it working. If you have sun you have a working panel. Some have a blocking diode that may go out but they have pretty much been phased out with the modern charge controllers.
First place to look for problems with a solar system is the battery or batteries. You know that now
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Old 08-19-2016, 06:05 PM   #7
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A battery that has gone totally dead was likely damaged because they aren't supposed to be discharged to death like that. Maybe the panel amperage wasn't enough to overcome some resistance caused by battery damage, or maybe the solar charge controller has a minimum voltage level it wants to see before it allows current to pass through. Then the converter was able to get some level of charge to the battery because it can push out a lot more amps, then the solar could take over again. Totally guessing here though. I would be suspect of that battery's health if it had been allowed to discharge down to 0.
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