As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT WAS NOT GROUNDED. **AHM ALERT** CLASS 07. DOOR 4 LEFT HAND REMOTE WELS CONTROL UNIT CONFIGURATION DOES NOT AGREE WITH OTHER WIRELESS EMERGENCY LIGHTING SYSTEM CONTROL UNITS. WITH FAULT CODE 33-12107 TIME 1630.21 CYCLES 180. REPLACED WELS CONTROL UNIT PER AMM 33-51-07 AND ALL TESTS PASS.