Topic-icon ATA 21-50, MD-10 Pack Outlet Temp Sensor

7 years 11 months ago - 7 years 11 months ago #30 by
#3 pack on a MD-10. When turned on, immediately drives to full hot and over-temps.

Compared pins "e" and "f" (both little) at pack temp controllers. These connect to the outlet temp sensor. Found #3 open while #1 & #2 read approx 1.7k ohms. Shot the sensor directly to eliminate wiring.... it was open.

MD-10-10 ATA 23-50 Pack Temp
Schematic 21-50-1
Last edit: 7 years 11 months ago by .

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