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Old 10-12-2019, 08:17 AM   #1
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Generator cycles power ON and OFF

The power has gone out all along the Outer Banks. Our motorhome has powered perfectly while the utilities ran. The power grid failed for now, so I turned on my generator, after moving the power cord. I do not have an auto transfer genny.

Details....itís a Generac 6500 and supplies power via a Progressive Industries power and surge protector. Thereís lots of fuel in the gas tank, the generator starts right up and continues to run, however the display from the PI display gives a PE5 display meaning Line 2 high voltage. For a brief few seconds the power comes on to the Microwave, a few clocks, and night lights, then shuts off. This pattern keeps repeating ON and OFF.

The generator ran perfectly and supplied power as recently as 2 weeks ago while dry camping. Iíve checked the generator buss fuse....tests ok with my meter. I flipped both line breakers OFF then back ON a couple of times to make sure theyíre not tripped. No change.

Any help appreciated.
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Old 10-12-2019, 08:21 AM   #2
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Myself I do not run a surge protector when on generator as I have found they don't always play nice with each other mainly I think do to how the natural system works. Have you tried it without the proctor in line?
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Old 10-12-2019, 11:18 AM   #3
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Quote:
Originally Posted by SeaDog View Post
Myself I do not run a surge protector when on generator as I have found they don't always play nice with each other mainly I think do to how the natural system works. Have you tried it without the proctor in line?
Been hardwired installed since we got the RV in 2010. Itís not removable like a portable in line unit.
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Old 10-12-2019, 11:52 AM   #4
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Assuming just AC power lost and genny continues to run typically is caused by output voltage and or frequency not maintained within parameters. Not familiar with Generac but troubleshooting guide is on line. See page 19
https://www.generator-parts.com/manu...-rv/075239.pdf

May not be your model but I would think the procedures are the same across the board.
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Old 10-12-2019, 03:02 PM   #5
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Since you have a voltmeter, unplug the generator from the motorhome and check the voltage coming from the generator on both lines. If it's all normal, consider flipping the slide switch on the PI EMS remote display to bypass it. I'm assuming you have that switch because it's on the current units.

If you have a unit without the remote display, there are instructions on their web site on how to open the unit and move a jumper wire to bypass it.

But do not do that if the voltages are not normal. That would be...expensive.

Ray
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Old 10-12-2019, 03:51 PM   #6
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Everyone out here on the Outer Banks is trapped from getting back to the mainland with flooded roads. Electricity was restored by morning but I found out I had the problem when I tried the genny.

I may try troubleshooting your way tomorrow. Thanks for the tip and Iíll report back here.
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Old 10-13-2019, 06:44 AM   #7
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May not be able to troubleshoot this issue for awhile.
The road is apparently open to leave the area and weíll be on the move to get back on schedule to return home.
Iíll report back here WHEN I get time to work the problem, but appreciate the info thus far.

Ken
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Old 10-15-2019, 12:13 PM   #8
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Stupid to say but check your oil they are set not to run long with low oil.
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