As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING ODOR NOTED THROUGHOUT THE ACFT. ODOR DISSIPATED WHEN RECIC FAN WAS TURNED OFF. AFTER EXTENSIVE TROUBLE SHOOTING AND PART REPLACEMENT REPAIRED WIRE W090-018-24 REF WD21-61-01 BETWEEN CABIN TEMP CONTROLLER AND CABIN TEMP SELECTOR. FOUND WIRE SHORTED TO GROUND. REF GNMM 2-0-15-1. LEFT PACK AUTO TEMP CONTROL OPS CHECKS NORMAL. AC OK FOR SERVICE.