As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EQUIPMENT COOLING EXHAUST OFF LIGHT ILLUMINATED IN BOTH NORMAL AND ALTERNATE MODES. THE EQUIPMENT COOLING LOW FLOW SENSOR FAILED. REPLACED THE LOW FLOW SENSOR WITH A NEW AND IMPROVED ONE. PERFORMED EQUIPMENT COOLING EXHAUST SYSTEM TEST. NO FAULTS NOTED.