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Old 12-07-2022, 01:34 PM   #1
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No 12volt

I have a 2014 Thor hurricane 34e when I am disconnected from shore power none of me 12 volt systems work. I checked the batteries and they are fully charged. I have checked to make sure that the battery disconnect switch is in the use position. I have reset the 12 volt reset near the batteries. Does anyone have any ideas
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Old 12-07-2022, 01:46 PM   #2
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First off, Welcome to iRV2!

You should have a 12v relay in your system that is controlled by the disconnect switch. It's a special type called a latching relay that turns on and off without having continuous power to the coils. It's very common for this relay to have burned contacts and fail to pass power. Have someone turn the disconnect switch off and on while you listen for the relay. When you find it, it should have the same voltage to both of the large terminals when the power is supposed to be on. If not, the relay has failed. The other possibility is there is a high amperage fuse or circuit breaker in the 12v system that has blown or tripped.
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Old 12-07-2022, 09:24 PM   #3
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First off, Welcome to iRV2!

You should have a 12v relay in your system that is controlled by the disconnect switch. It's a special type called a latching relay that turns on and off without having continuous power to the coils. It's very common for this relay to have burned contacts and fail to pass power. Have someone turn the disconnect switch off and on while you listen for the relay. When you find it, it should have the same voltage to both of the large terminals when the power is supposed to be on. If not, the relay has failed. The other possibility is there is a high amperage fuse or circuit breaker in the 12v system that has blown or tripped.
Any idea where the relay would be or what it looks like
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Old 12-07-2022, 09:44 PM   #4
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Any idea where the relay would be or what it looks like
It should be fairly close to your house batteries. Here are two examples of what one may look like. Just do a search on Amazon for Latching Relay and there will be possibilities.
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Old 12-07-2022, 10:24 PM   #5
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I have a 2014 Thor hurricane 34e when I am disconnected from shore power none of me 12 volt systems work. I checked the batteries and they are fully charged. I have checked to make sure that the battery disconnect switch is in the use position. I have reset the 12 volt reset near the batteries. Does anyone have any ideas
Under the hood you will have a BCC (Battery Control Center) where your (3) relays are located. Go to the website and find the model you have under "Our Products" and read up on it... you need to have and use a multimeter for best effect.
Typically inside the BCC there is a 50A 'push to reset' breaker in the lower LH corner that feeds the DC fuse panel in the motorhome, maybe yours popped.


EDIT: Do you hear the relay "clunk" when operating either the chassis or house disconnect switches?
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Old 12-09-2022, 11:56 AM   #6
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Update I unplugged the motor home from shore power and plugged it back in than I waited about a minute than unplugged it and the 12 system works has anyone heard of this before
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Old 12-09-2022, 12:14 PM   #7
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Update I unplugged the motor home from shore power and plugged it back in than I waited about a minute than unplugged it and the 12 system works has anyone heard of this before
No.
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Old 12-12-2022, 08:26 PM   #8
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Update I unplugged the motor home from shore power and plugged it back in than I waited about a minute than unplugged it and the 12 system works has anyone heard of this before
So you are running unplugged off of the inverter? For your 120v I mean
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Old 12-13-2022, 02:21 PM   #9
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I unplugged the motor home to go on vacation and none of my 12 volt systems worked I checked all of the resets and nothing worked. So I plugged the motor home back into my shore powers for about a minute than I unplugged it and all my 12 volt systems worked
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