25100@vector-8600mthigh
No Comm From Micro To Stp1
refrigeration
Description
The main microprocessor cannot communicate with the stepper valve module over the CAN bus, and the unit shuts down and alarms.
Activation Conditions
Main microprocessor cannot communicate with stepper valve module over the CAN bus.
Unit Behavior
Engine and Electric Operation: Shut down and alarm. The stepper valve module status LED may be on steady green (not pulsing) or red.
Reset Conditions
Auto reset when CAN communication is restored, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
Corrective Actions
Refer to the manual troubleshooting procedure.