As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ON DESCENT HAD A FAINT HOT ELEC SMELL. ON LANDING WE WERE UNABLE TO CONTROL THE COCKPIT TEMPERATURE IN AUTO OR MANUAL MODE. R & R 3 WAY VLV & TESTED IAW AMM 21-27-70-4. DURING MTSI COMPLIANCE FOUND VLV AT LOCATOR V21021 PARTIALLY OPENED. R & R VLV IAW AMM 21-61-02-4. CHECKS GOOD, ACFT OK TO CONTINUE.