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There are good reasons the GOOD refrigeration Journeyman make more money! I have tried to take a good many experienced HVAC techs and throw them into the supermarket world. A bust every time! But,...

The factory default pascode is 8888 or 1234. From there on you really need a manuall or experienced tech to walk you through it on site.

Sell them an Einstein 2 RX300 (or 400) and round file that protocol PCS. They do a horrible job of managing load/capacity relationships and cycle those cute little scroll machines to death.