What was found
OPTO COUPLER (MOD-16) INSTALLED BY MFG IS MISWIRED, CAUSING OVER TEMP PROTECTION CIRCUIT TO BECOME INOPERATIVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
OPTO COUPLER (MOD-16) INSTALLED BY MFG IS MISWIRED, CAUSING OVER TEMP PROTECTION CIRCUIT TO BECOME INOPERATIVE.