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TM 9-4120-389-14
Table 4-2. UNIT TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. AIR CONDITIONER FAILS TO OPERATE IN ANY MODE.
Step 1.
Check to see if main power cord is plugged in.
Connect power cable to a source supplying 208VAC, three phase, 50/60 Hz. power.
Step 2.
Check to see if main power supply circuit breaker is in the ON position.
Place circuit breaker in the ON position.
Step 3.
Check to see if mode selector is in the VENT position.
Place mode selector in the VENT position.
If the air conditioner will not operate, check for a defective switch in accordance with para.4-
41.
Replace defective mode selector switch in accordance with para. 4-41.
4T2-1
4-40
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