As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 120KTS, THEY REJECTED TAKEOFF FOR WING ANTI-ICE CAUTION MESSAGE. MX DEFERRED WING ANTI-ICE TEMP SENSOR. WHILE PERFORMING RT WING ANTI-ICE VALVE OPS CHECK, NOTED RT MODULATING AND S/O VALVE OPERATING VERY DELAYED AND SLOW. R & R RT MODULATING AND S/O VALVE IAW CRJ900 AMM30-12-02-000/400-801. OPS CHECK AND LEAK CHECK GOOD. THIS CLEAR MEL. NO M FUNCTION. B1-007765