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Has anyone ever experienced this on EST3.....

Almost Every time the RESET Button is hit in Fcc a Trouble comes up. (25.00.0602 - GroundFault CPU 2nd Floor)

Yes, I a have had similar problem. We discovered that a printer cable on the port 2 of the 3rd panel in the network had an intermmittent ground. And it only showed up when we did a master reset. Check if RS232 ports. Also could be an intermittent ground on RS485 channel.