TM 9-4120-402-14
Table 4-3. UNIT TROUBLESHOOTING - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. FAN RUNS, BUT COMPRESSOR DOES NOT START.
Step 1. Check to see if HIGH PRESSURE CUTOUT switch has tripped.
PUSH and release TO RESET.
Step 2. Check operation of MODE selector rotary switch.
Turn switch to OFF/RESET, then turn to COOL.
WARNING
Disconnect input power before performing internal electrical troubleshooting.
Voltages used can be lethal.
CAUTION
Use disconnect switch (NOT POWER CABLE) to disconnect power to unit.
Damage to cable connector pins will result if cable is used.
Step 3. Check for loose or damaged electrical connectors, or damaged wires in wiring harnesses.
Tighten or replace connectors, or repair or replace damaged wires.
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