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Old 09-27-2022, 04:42 PM   #1
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Front AC shed on 50 amp power

I am currently connected to a 50 amp pedestal - 117 - 121 volts on each leg- power supply appears to be good. Firefly indicates that the front AC is shed… rear AC is working fine and keeping everything cool for now, but…

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When I select Cool on the Firefly control panel after a short delay the fan starts but no cool air, the display flashes between Cool and Shed. I can turn off the rear AC and try again- same thing. No major loads are on. Batteries are full.

I did a complete reset of power… removed the plug from the pedestal, powered off chassis and coach batteries- inverter off and back on. No change.

Any thoughts?

Joe
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Old 09-27-2022, 04:53 PM   #2
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What comes to mind for me is an issue with your front A/C unit. A bad compressor can spike the amps to very high levels. This seems especially possible if when you turn off the bedroom A/C the front A/C won’t run on compressor.
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Old 09-27-2022, 05:40 PM   #3
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I guess a trip to the roof is needed. I have the necessary meters and tools to troubleshoot the electrical supply. I’m praying it is a capacitor…

With the firefly indicating the load was shed I wasn’t sure- but I guess a momentary surge trips the hi amp trigger in the firefly system.
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Old 11-20-2022, 07:14 PM   #4
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Question: What does shed mean?
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Old 11-20-2022, 10:25 PM   #5
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Quote:
Originally Posted by MakoMike View Post
Question: What does shed mean?
Some RV's have a Power Management System. It detects the electric power source and automatically shuts off appliances based on total amps being consumed to prevent tripping the main breaker, it's called load shedding.


I agree with creativepart's reply.
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