What this code means

This alarm occurs when both the travel demands (Fwd and Bwd) are active at the same time.

Applies to: ZAPI AC-0 SSL Sensored inverter (traction configuration).

Possible causes / checks (from the source)

Check the wiring of the Fwd and Bwd travel demand inputs (use the readings in the TESTER to facilitate the troubleshooting). A failure in the logic is possible too. When you have verified the travel demand switches are fine working and the wiring is right, it is necessary to replace the controller.

Need the part?

If diagnosis points to a failed sensor, solenoid, controller or harness part, send us the code (MDI-PRC 80), machine model and serial number — we quote genuine and OEM replacement parts for export.