TM 9-4120-371-14
Table 4-2. TROUBLESHOOTING (Cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. COMPRESSOR STARTS NORMALLY, BUT COMPRESSOR CIRCUIT BREAKER SOON TRIPS.
Step 1. Check to be sure fabric cover is rolled up.
Step 2. Check to be sure there is no restriction to air flow through condenser section.
Clean all obstructions from condenser inlet, outlet, and condenser coil.
CONDENSER AIR OUTLET
C O N D E N S E R AIR INLET
outlet.)
NOTE
Condenser fan and conditioned air (evaporator) fan are both driven by the same motor. If
one fan is operating and the other is not, check for loose fan on motor shaft. If both fans
are not operating, check for loose electrical connections, defective motor relay (K4), or
defective motor (B2).
Step 4. Check circuit breaker (CB1). Test circuit breaker. (See para 453.) Replace circuit breaker if
defective. Reset compressor circuit breaker and restart in COOL mode.
If circut breaker trips again soon after restart in COOL mode, do not attempt another
restart, and contact direct support maintenance for refrigeration system troubleshooting.
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