As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PREFLIGHT FOUND "TEMP CONT VALVE CLOSE RIGHT" BREAKER POPPED. GROUNDED - YES. PERFORMED C/B INSP. RESET PER B737-9 AMM 20-60-01-850-801. C/B STAY IN NOTED. R/H PACK TEMP CTRL VLV IS ON MEL, PERFORMED MEL OPS PROCEDURE FUNCTION CK NORMAL.