As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER BLOCKOUT AND BOTH ENGINES RUNNING AFT CABIN TEMP FWD CABIN TEMP, FLT DECK TEMP EICAS MESSAGES DISPLAYED WITH DISCRETE LIGHTS ILLUMINATE.AC RETURNED TO GATE (BTB) AND MTX GROUNDED AC MTX EXECUTED BITE TEST OF ZONE TEMP CONTROLLER IAW FIM 21-61 FAULT TREE 803. BITE TEST PASSED INTERMITTENT FAULT. AND RETURNED AC TO SERVICE.