As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT WTB OVERHEAT LIGHT ILLUMINATED ON TAXI OUT WITH LEFT PACK RUNNING ON APU BLEED SOURCE. PERFORMED QRH, LIGHT EXTINGUISHED WITH PACK OFF_ OK TO CONTINUE PER MEL 26-12-01 SP1 PERFORMED FIM 26-18 TASK 809 FOUND OPEN AT LOOP M1911. REMOVED AND REPLACED SENSE LOOP M1911 PER AMM 26-18-02. OPS CHECK GOOD.