DPF Critical Shutdown
system
Description
DPF conditions requiring APU shutdown were detected, and the unit alarms and shuts down.
Activation Conditions
DPF conditions requiring APU shutdown detected.
Unit Behavior
Alarm and shutdown.
Reset Conditions
All A26201 Activation Criteria removed and 15 minutes elapsed. See alarms listed below OR Alarm Reset OR Cycle Power
Corrective Actions
1. Check for additional alarms: 26200 DPF Loss of Comm, 26202 DPF Acknowledge Error, 26203 DM1 Exhaust Temp Sensor Fail, 26204 DM1 Exhaust Temp High, 26205 DM1 Exhaust Press Sensor Fail, 26206 DM1 Exhaust Press High Post Regen, 26207 DM1 Exhaust Press Extreme, 26208 DM1 Exhaust Press Snub Plug, 26209 DM Heater Fail, 26210 DM1 Gen Low Voltage, 26211 DM1 Heater Timeout, 26212 DM1 Gen Freq Fault. 2. Check Fuses – Check F8 fuse. Verify correct fuse and check fuse holder for damage. Replace fuse as required. Clear alarms, restart and check for repeat alarm (s).