Been chasing this gremlin for about 2 weeks. It is not consistent as in where in the hoist-way I find the unit down. She is faulting out on a 1021, inspection indicates an invalid I/O condition. In the normal operation inputs: CON3A-1 “INCTM” and CON3B-4 “INHAM” are high with 24VDC for it to run. However I find unit down with all 7 inputs: INCTU, INCTD, INCT, INCTU2, INCTD2, INHA, and INHAM are high.
I have checked wires from the car top, verified voltage on the S24-2 card and traced every plug back to the CWIK board in the car operating panel. I have found nothing. However if I unplug CONA or CONB from the S24-2 board this fault will appear. It’s almost like I am intermittently loosing voltage to the board.
Not sure where to look next.
Last edited by Alpha1G; 12/19/22 03:46 PM.