This is the second customer I've gotten this error on. With the first, I tried replacing the PTC unit, but the error came back the next day. In order to avoid a U2 error by replacing the PCU PWB, we simply decided to swap out the machine. Now I have another customer with the same error. I'm headed out today to go replace the PTC unit, but can anyone give me some insight as to what the cause of this is? Two customers in rapid succession seems very odd to me.
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