As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AIRCRAFT RETURNED TO PHX. CLIMBING THRU FL210 GOT ECAM ANTI ICE STANDBY LEFT STATIC ANTI ICE STANDBY RIGHT STATIC WITH A BRIEF STONG BURING SMELL NO SMOKE. MAINTENANCE FOUND THE ELECTRICAL PROBE HEAT COMPUTER #3 TO BE BAD AND REPLACED IT PER AMM 30-31-34. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.