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Old 08-19-2016, 01:02 PM   #1
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Winnebago Vista electrical is out

We purchased a 2016 Vista LX 30T. Preparing for our first trip, the shore power went out. Returned the Vista to the dealer for warranty repair (total 190 mile round trip). They kept it several days, replaced the transfer switch. We went to pick it up. On way home I wanted to cool down the cabin, so pulled over and started generator. It ran about 30 seconds and died. Tried once more, same result. I reasoned maybe generator wasn't was getting fuel, air filter, etc. Typical small engine diagnosis. Got back home, plugged into shore power, tripped the 30 amp breaker on house circuit. Googled Onan generator troubleshooting and saw that it displays error codes. Showing error code 27 - voltage sense. OK, must be a short circuit. Trying to be logical, I disconnected shore cable from transfer switch, perhaps the shore cable was damaged. All OK. Wary of voiding warranty, I stopped there. I preparing to return to dealership, I noticed that the cabin batteries were discharged. Just took RV back to dealer for repair, they seem baffled. Has anyone heard of similar problems? The one thing that I learned from this is to verify shore power, generator power and dc power works before leaving dealership. Thanks in advance for any advice or insights you may have.
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Old 08-19-2016, 01:46 PM   #2
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Hi, It sounds to me that someone wired the transfer switch in correctly. Keep in mind that at rest the transfer switch is on generator power. When you plug in shore power it activates.

You can go on the winnebagoind.com website and download a wiring diagram of your transfer switch and then compare it to how it is wired, making sure first that generator is not running and not plugged into shore power.

When trying to start Generator does it turn over or do you hear clicking? If it runs check the circuit breakers on the generator.

When you connect to shore power you should hear a click from transfer switch.

I hope this helps.

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Old 08-19-2016, 04:30 PM   #3
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Quote:
Originally Posted by Tom-NC View Post
Hi, It sounds to me that someone wired the transfer switch in correctly. Keep in mind that at rest the transfer switch is on generator power. When you plug in shore power it activates.

You can go on the winnebagoind.com website and download a wiring diagram of your transfer switch and then compare it to how it is wired, making sure first that generator is not running and not plugged into shore power.

When trying to start Generator does it turn over or do you hear clicking? If it runs check the circuit breakers on the generator.

When you connect to shore power you should hear a click from transfer switch.

I hope this helps.



The generator starts and runs but dies after about 30 sec. I will check on wiring diagram for transfer switch. I didn't realize that the generator had circuit breakers. This does help. I'll check on it

Thanks
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Old 08-26-2016, 05:14 PM   #4
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The generator starts and runs but dies after about 30 sec. I will check on wiring diagram for transfer switch. I didn't realize that the generator had circuit breakers. This does help. I'll check on it

Thanks
The problem has been solved. Apparently when the dealership replaced the original transfer switch, the tech broke a wire(s) in that junction box causing a short circuit. Fixed that and the shore power and generator all work properly.

Thank you to everyone who replied.

Terry
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Old 08-26-2016, 05:28 PM   #5
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Hi, It sounds to me that someone wired the transfer switch in correctly. Keep in mind that at rest the transfer switch is on generator power. When you plug in shore power it activates.

I think you have that backwards. When the Gen starts the transfer switch senses the voltage and after a brief delay engages and send voltage to the MH. Would they really wire it so the Gen is under load at startup?
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