Table 3-6. Unit Troubleshooting Table. -- Continued
Test or Inspection
AIR-CONDITIONER (A/C) WILL NOT OPERATE OR COOL.
Entanglement in moving parts can cause serious injury or death.
Ensure A/C system is properly charged and has no leaks (Para 19-4).
Check to make sure A/C clutch (1) on A/C compressor is engaging when A/C is turned on
If A/C clutch (1) does not engage, replace A/C compressor (Para 19-8).
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical circuits, a
direct short may result. Damage to equipment and injury or death to personnel may occur.
Check A/C selector switch (2) in cabin for voltage (refer to FO-3).
If voltage is not present at A/C selector switch (2), replace evaporator fan switch (Para 19-10).
If A/C clutch (1) stays engaged, notify Direct Support maintenance to check refrigerant level