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Thread: EMS 50 High Voltage Cutoff ???
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04-18-2019, 10:43 AM #21
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Mark - 2018 Solitude 310GK - 2017 F-350 diesel SRW short box - Pullrite Superglide hitch
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04-18-2019, 11:42 AM #22
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2017 Ford F-350 DRW 6.7L Platinum
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04-18-2019, 11:53 AM #23
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Well a simple test of the voltage at the box will give the answer. I find it strange that this code is only happening at what I would call quite hours. To me it sounds like it’s calibrated correctly
2018 F-350 6.7L diesel SRW CCSB Lariat with OEM rolling tonneau
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04-18-2019, 12:28 PM #24
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I read @Coheeba's original message as saying that he had measured voltage of 133-134 volts on leg 2 of his supply.
Maybe I'm wrong about that; maybe he just read the high voltage report from the EMS display.Mark - 2018 Solitude 310GK - 2017 F-350 diesel SRW short box - Pullrite Superglide hitch
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04-18-2019, 12:33 PM #25
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I seem to be the contrarian today--not intentional!
A high voltage during quiet hours is what I'd expect. The load on the grid goes down (people aren't using electricity) so the voltage goes up. That's why when everyone and their brother is running their air conditioners there are "brown outs" (low voltage).2017 Ford F-350 DRW 6.7L Platinum
2019 315RLTS (purchased 16 Jul 18 from Campers Inn RV in Byron, GA)
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04-18-2019, 02:49 PM #26
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04-18-2019, 03:03 PM #27
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This is my point. If the voltage from the pole is normal then quite time would read ~120. I’d expect that his EMS would read a low voltage code during peak hours. This is not the case. He’s getting high voltage readings. If calibration isn’t the issue then he’ll likely get readings in the 110s.
2018 F-350 6.7L diesel SRW CCSB Lariat with OEM rolling tonneau
Pullrite Superglide OE Series #2914, Titan 55Gal Tank(midship)
2018 Momentum 354 M-Class no mods yet.
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04-18-2019, 06:06 PM #28
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Monty and Nena, with our 4 legged friend Allie
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04-18-2019, 08:02 PM #29
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04-18-2019, 08:49 PM #30
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Too many questions...
The voltage in original post was read off the EMS monitor not a meter.
The tech told me to check the incoming voltage to see if it matches the monitor. If not the board needs to be calibrated, I suspect that it is accurate but I will check. I can’t do it for a few days as I keep it at a storage lot and have to bring it home to get power.
As I said earlier, especially in rural areas, the power companies will push higher voltages to compensate for high demand which lowers the voltage. That’s why I would see higher voltages at night when there is low demand.2019 GMC 2500 HD Denali
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