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Old 02-24-2018, 12:47 AM   #1
John the Basque
 
2016 30' International
Chaska , Minnesota
Join Date: Jul 2017
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Stock power converter blowing 30A fuses

I have a 2016 Serenity 30’ 50A service. The stock power converter is no longer charging my batteries. The unit is blowing the pair of 30A fuses. I disconnected shore power and switched to store mode. Installed new fuses, as soon as I switched from “store” to “use” the fuses blew again. Any ideas as to why? Thanks in advance.
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Old 02-24-2018, 03:56 AM   #2
Rivet Master

 
2014 20' Flying Cloud
Sag Harbor , New York
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Sounds like your converter may have gone bad IMO, but this is just a lay opinion. Hopefully an expert will check in later this morning. Further info may be in these search results for "converter bad 2016" --

https://www.google.com/search?q=conv...=airforums.com

Is your shore power setup the same as has worked alright before? By 30 amp "fuses" are you referring to a house/garage old-fashioned fuse panel [vs. a more modern circuit breaker panel]? Any chance there is a loose connection in your 120-volt wiring? How about the shore power plug and outlet, are they in good condition?

If "fuses" refers to the Airstream's 12-volt distribution panel, I thought that had circuit breakers not fuses? Maybe the confusion is all mine, but perhaps you could clarify the terminology/location of the "fuses." Thanks.

Good luck!

Peter
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Old 02-24-2018, 06:54 AM   #3
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Either the batteries are connected in reverse polarity or the converter is bad.
I am refering to the fuses in/on the converter itself.
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Old 02-24-2018, 07:03 AM   #4
John the Basque
 
2016 30' International
Chaska , Minnesota
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Stock power converter blowing 30A fuses

Shore power not involved, batteries not connected in Reverse. Fuses are green auto type located on far right side of converter stacked. Read my original post carefully don’t guess.
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Old 02-24-2018, 07:05 AM   #5
John the Basque
 
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More interest in “root” cause possibilities
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Old 02-24-2018, 09:18 AM   #6
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A guess: You have a dead short either within the output of the converter or in the wiring to the batteries. Take a meter and check from the fuses on.
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Old 02-24-2018, 10:07 AM   #7
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Are the batteries shorted out, internal battery short?
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Old 02-24-2018, 10:36 AM   #8
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Remove and insulate the battery connection, at the battery. Either positive or negative will do. Put in new fuses and try again. If the fuse holds at the converter then measure the voltage with a meter at the converter. If you have 12v lighting in the AS then you have a bad battery. If not then it becomes a little more involved. You could then remove cables going to the battery at the converter and then measure the voltage with a meter at the converter. If good then you have an AS problem.
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Old 02-24-2018, 12:42 PM   #9
John the Basque
 
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Thanks Vich the batteries are brand new installed yesterday
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Old 02-24-2018, 01:23 PM   #10
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Those two fuses being blown is suggestive of reverse battery (now or earlier) - However it may be the converter itself. Easiest way it find out is to remove cables going to battery at the converter (be sure to insulate or disconnect at the battery), then turn on shore power (converter input) and measure output voltage of converter. If output of converter is >13V then you most likely have an problem at or near the batteries.
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Old 02-24-2018, 02:14 PM   #11
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Betcha its either the newly installed batts or the connections.
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Old 02-24-2018, 03:03 PM   #12
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Quote:
Originally Posted by johare22 View Post
Thanks Vich the batteries are brand new installed yesterday
Did the problem start only after you installed the new batteries? Or did the problem exist before this, with the old batteries?
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Old 02-24-2018, 03:50 PM   #13
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Just replaced mine

I have a 2017 International Serenity 30 and I noticed my converter fan was running 24 hours, never turned off. This was not normal. Called the dealer, they said sometimes it happens, don’t worry about it.
Then I called Airstream, they said it can happen. I looked at my battery level on the Sea-level meter, showed 12.0 Volts. Airstream tech said that’s a problem, it should read 13.6 - 13.8V while plugged into shore power with battery disconnect switched to “Use”. I had my batteries tested, they were good . My dealer then replaced the converter under warranty.
I learned a lot , and now better understand how to monitor my batteries and the converter. Sounds like your converter has gone bad too. It’s a quick easy replacement. I would recommend you replace yours with a new 3 stage that won’t over charge your batteries if you stay plugged to shore power for long periods.
Good luck!
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Old 02-24-2018, 04:33 PM   #14
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What brand and model number is the converter?
Can you post a pic of the fuses you are referring to?
Showing where they are located.
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Old 02-24-2018, 07:39 PM   #15
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FWIW, I have had bad batteries blow the converter's output fuses. Changed batteries and fuses and everything was OK. Had a friend who installed his batteries backward and got the same result as you. Better recheck the battery connections. You probably did not harm the converter. That's what the fuses are for. While you are at it check you battery output circuit breaker or fuses. They could now be blown and gone from reverse polarity.
guskmg
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Old 02-25-2018, 12:59 PM   #16
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So, did you find the problem yet?
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Old 02-26-2018, 01:27 AM   #17
John the Basque
 
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Quote:
Originally Posted by OTRA15 View Post
Did the problem start only after you installed the new batteries? Or did the problem exist before this, with the old batteries?


Problem existed prior to new battery install was fine a month ago. Suspect converter, no cable issues going into unit need to check wiring harness coming in from A frame but that is more involved.
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Old 02-26-2018, 01:32 AM   #18
John the Basque
 
2016 30' International
Chaska , Minnesota
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Quote:
Originally Posted by guskmg View Post
FWIW, I have had bad batteries blow the converter's output fuses. Changed batteries and fuses and everything was OK. Had a friend who installed his batteries backward and got the same result as you. Better recheck the battery connections. You probably did not harm the converter. That's what the fuses are for. While you are at it check you battery output circuit breaker or fuses. They could now be blown and gone from reverse polarity.

guskmg


The polarity is not the issue here. This the old batteries just prior to removal and replacement. After 2 years hard use.
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Old 02-26-2018, 01:36 AM   #19
John the Basque
 
2016 30' International
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Quote:
Originally Posted by xrvr View Post
Betcha its either the newly installed batts or the connections.


I’ll take that bet, problem existed prior to new batteries, worked great for the last 2+ years until this past week.
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Old 02-26-2018, 01:41 AM   #20
John the Basque
 
2016 30' International
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Quote:
Originally Posted by TG Twinkie View Post
What brand and model number is the converter?
Can you post a pic of the fuses you are referring to?
Showing where they are located.


Fuses are a pair in upper left corner of fuse / electric panel, they are green with 30 printed on the facing edge. They are above all other fuses and circuit breakers and isolated from the operational panel.
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