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Old 02-11-2024, 06:12 PM   #1
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Lost of ac power

At times I loose AC power. I checked shore line power and have power into the trailer. Checked all breakers and nothing is tripped. Then when power comes back on its own, I hear a click noise where fuse panel is and the AC/DC converter is. By time I get cover off to check things with my volt meter the power is back on. Has only happened a couple times. Any ideas? I have a 2018 Sandpiper 372LOK
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Old 02-11-2024, 06:22 PM   #2
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possible a bad automatic transfer switch
it's a relay / contactor that detects which power source you use
generator or shorepower are the usual

maybe a loose wire or a bad coil.
It's 120v so if you don't know how to check it safely
find someone who can do it.

some hints below on what to look for
https://www.google.com/search?q=vide...t=gws-wiz-serp
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Old 02-11-2024, 07:18 PM   #3
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Do you have an Electrical Management System that might be detecting a problem?
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Old 02-11-2024, 08:16 PM   #4
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I have no power management system or generator. I am going to kill power to trailer tomorrow and check all connections on back of panel and anything else I can find. It's just odd never know when it will do it and it's been over couple months since it did it till a couple days ago.
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Old 02-12-2024, 06:45 AM   #5
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Quote:
Originally Posted by Sandpiper2018 View Post
I have no power management system or generator. I am going to kill power to trailer tomorrow and check all connections on back of panel and anything else I can find. It's just odd never know when it will do it and it's been over couple months since it did it till a couple days ago.
Also, if you can, check the connections where your shore power plugs into your trailer. Check your shore cord and see if there's any obvious signs of heat or corrosion on the prongs.
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Old 02-12-2024, 09:05 AM   #6
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definitely look for loose and damaged connections

although you may not have a generator installed ..
there may still be a transfer switch on a 5th wheel if generator install was an option

ATS make a CLICK sound ..... when they are connected to a power source OR when they lose power
from either from a bad connection at or before the ATS
(if you have one... it will be between the power inlet plug and the breaker panel)

simple test... have someone listen as another person turns the pedestal breaker on/off
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