As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL RELAY TEST FAILED. NUMBER 1 FAN OVERHEATED AND STOPPED, DET FAN PRESSURE SWITCH HAD ALSO FAILED DUE TO A PIN BEING BENT ON THE PRESSURE SWITCH. REMOVED AND REPLACED FAN AND DET AIR PRESSURE SWITCH. OPS CHECK GOOD. OK FOR SERVICE.