As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU HAD SHUTDOWN, FAULT LIGHT ILLUM AND EICAS MSG. APU FAULT DISPLAYED. CREW COMMENTS: APU AUTO SHUTDOWN TWICE. ACP MEL 4911E. REPLACE AS PER AMM T-S 49-11-00 PAGE 150 FIGURE 112, DPI WAS NOT POPPED, REPLACED DELTA-P SWITCH AS PER MM, RAN APU, LOADED IT UP ELECTRIC AND PNEUMATIC OPS OK.