No Comm From Micro To Display

Main microprocessor cannot communicate with the display module over the CAN bus; the unit requires shutdown and, if active 2 minutes, shuts all modules except the display.

If alarm 21100 “NO COMM FROM ANY BOARD TO MAIN MICRO“ is not active and main microprocessor cannot communicate with the display module over the CAN bus.

Engine and Electric Operation: Required Shutdown. If alarm remains active for 2 minutes issue a shutdown command to all modules except the display.

Auto reset when CAN communication is restored, or alarm may be manually reset by turning the unit off, then back on again.