Hello everyone, We have a Binary UHPL 1290 Infinity I that shows an error when we selec Chabnel A1 with any channel B (B1 or B2) it shows a "Valve Overcurrent" error and the pumps stop the flow and shows the error red light. This does not happen with the channel A2 with anny channel B. Witch is the cause of this error? Is posible to fix it without change parts?