As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAULT LIGHT ILLUMINATED DURING APU START ATTEMPT AT FL340 DURING FIRST AND SECOND TRY. SUCCESSFUL CSS ACCOMPLISHED AFTER FAULT LIGHT EXTINGUISHED AT FL300. GROUNDED - YES. PER SEAMC DUE TO APU BEING DEFERRED FOR THIS ISSUE, CSS IS CONSIDERED UNSATIFACTORY. APU TO REMAIN ON 49-99A. SEAMC AUTHORIZED.