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Re: power distribution board red light stays on
The red light is supposed to indicate that there is an electrical load connected to the PDB output and the circuit breaker for that output is open (or missing).
If there is nothing connected to that position's red Wago connector but its red light is on, there is something wrong with your Power Distribution Board.
A brief loss of communication is very suspicious. How brief is it? Less than a second, a second or two, fifteen seconds, or what?
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