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Old 07-14-2014, 12:12 PM   #1
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EMS Display Readings

My EMS display does not recognize a 50 amp service. It displays 30 amps instead. I have power to all appliances and fixtures. Seems like it might be a bad board. Does anyone have any quick fix recommendations? 2006 Winnebago Vectra. Any help would be greatly appreciated!
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Old 07-14-2014, 12:46 PM   #2
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I don't think it will actually show the number '50'. Our previous Itasca DP did not and our current 08 Essence Damon does not. '30' does show up and it will actually show the amount of power being pulled. On fifty amp it does not. Probably nothing wrong with your unit

Read your post again. Is it show 30 when plugged into 50 amp? If so, have you checked the breakers in your main panel?
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Old 07-14-2014, 01:05 PM   #3
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Yes, you are correct. It did not display anything when I was plugged into a 50 amp service before but now it shows 30 amps. All breakers have been checked and all appliances work fine.
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Old 07-14-2014, 01:07 PM   #4
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My EMS does not show 50 amps. It goes dark. 30 amp it is lit up and displays "30".
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Old 07-14-2014, 08:25 PM   #5
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try the disconnect on the dash and see if it resets. Thats what I did a couple nights ago when the whole display was dark connected to 50 amps. Worth a shot.
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Old 07-14-2014, 08:49 PM   #6
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Mine is the same. A few years ago it stopped being blank when plugged into 50A and always shows 30A and the amperage draw, including shutting down the appliances when it goes above 30A. Fortunately, the amperage reading is erratic - I can have the AC, Microwave, fireplace, and W/D going and it may only read 12 amps, so it seldom goes into it's shutdown routine. I've tried all the usual fixes (unplugging inverter, circuit breaker resets, all the suggestions on this forum), but nothing works. I just live with it, it's not worth it to me to replace the circuit board and have it happen again.
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Old 07-15-2014, 07:38 AM   #7
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Check to see that all the circuit breaker n your panel are turned on. The EMS uses two sense lead connected to both sides of the breaker panel to sense 50 amp service. These leads are
connected to two of the breakers and if one of them is turned off, the EMS will indicate a 30amp service.
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Old 07-15-2014, 09:20 AM   #8
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Quote:
Originally Posted by yworry View Post
My EMS display does not recognize a 50 amp service. It displays 30 amps instead. I have power to all appliances and fixtures. Seems like it might be a bad board. Does anyone have any quick fix recommendations? 2006 Winnebago Vectra. Any help would be greatly appreciated!
This vintage coach did have some bad PC boards from Intellitec. I replaced ours many moons ago when the board went bad with the same indications you have. Intellitec supplied board, no charge.
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