As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ANTI ICE MASTER CAUTION ON TAKEOFF. REJECTED TAKEOFF. WING ANTI ICE VALVE LIGHTS REMAINED BRIGHT. REMOVED AND REPLACED ENGINE/WING ANTI-ICE MODULE PER AMM 30-11-41, PERFORMED WING THERMAL ANTI-ICE PANEL TEST SWITCH AND INDICATION. OPERATIONS CHECK GOOD. NO FAULTS NOTED.