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I am (hopefully was) having the same problem. Finally came home one day and the PCB board was dead and wouldn't power up. The transformer went out and since replacing it a few days ago we haven't had any issues. It might have been doing some strange things with the input voltage to the board...

Spoke too soon...it's locked up again but is still running the pump and pool/spa mode according to the programmed schedule. Display shows 6521 REV HH and doesn't respond to any key commands. We do have a spa side remote that has been inoperative since we bought the house a few years ago. It's...

I'm about 99% sure the wiring is good. The old stuff I pulled out was fine and I've checked and re-checked the new connections several times. I went home yesterday intending to do an extended test with my short "jumper" connecton just to eliminate all doubt but the controller had somehow...

Hi. I'm new here and tried doing a few searches without much luck on this subject. I have a Jandy RS6 controller in the house that "locked up" the other day. I hit the reset button on the side and all of the lights came on and stayed on. Made a short jumper to connect the panel out to the...