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TM5-4120-376-14
Table 3-1. OPERATOR/CREW TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WARNING
Be careful when working with high voltage. Failure to comply can result in
serious injury or death.
1. AIR CONDITIONER FAILS TO OPERATE IN ANY MODE.
Step 1.
Check to see if main power cord is plugged in.
Connect power cord to a source supplying 208 VAC, 3 phase, 50/60 Hertz power.
Step 2.
Check to see that power supply circuit breaker is in the ON position.
Place circuit breaker in the ON position.
Step 3.
Check to see if mode selector (1) is in the VENT position.
Place mode selector in VENT position.
Step 4.
Check to see if control circuit breaker (2) is in the ON position.
Place control circuit breaker in the ON position.
Step 5.
Check to see if compressor circuit breaker (3) is in ON position.
Place compressor circuit breaker in the ON position.
3-2
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