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    Pentair 400 NT - Need Troubleshooting Help

    I have a Pentair 400NT...... digital temp has been going out for a while. Then I went to turn on and I got the call for service error...... didn't mess with it for awhile..... had some time, so I figured I'd start troubleshooting again..... I have power to the board, but no LEDs..... I assume...