Waters SFE CO2 machine communication error

One of our machines keeps setting off the alarm for co2 pump communication error. This has been ongoing for almost two weeks. Have done the cycle reset process far too many times. Turned off everything, unplugged every component…… and still has the communication error. Just curious if anyone else had this ongoing issue and what fixed the issue. Will continue the cycle process in hopes it will eventually work. Thanks

What did Waters say?

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Have u used tested to see if the communication wires have continuity or used an oscilloscope or logic analyzer to look at what’s on those com lines

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