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Page Title:
COMPRESSOR STARTS BUT CUTS OUT ON OVERLOAD |
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 TM 5-4120-369-14
Troubleshooting - Continued
Table 4-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
COMPRESSOR STARTS BUT CUTS OUT ON OVERLOAD
Test condenser fan for motor failure.
Step 2.
Replace defective motor (paragraph 4-23).
EVAPORATOR AIR OUTPUT VOLUME LOW
6.
Step 1.
Check to see if evaporator fan speed switch is set at low speed.
Reset switch to HIGH speed.
Step 2.
Check for dirty or damaged filter or mist eliminator.
Clean or replace filter (paragraph 4-3). Clean or replace mist
eliminator (paragraph 4-9).
Step 3.
Check for iced or dirty evaporator coil.
De-ice by operating in low heat mode and clean coil (paragraph 4-5).
Inspect evaporator fan for defect.
Step 4.
Replace defective fan.
Test fan motor for faulty operation.
Step 5.
Replace motor (paragraph 4-21).
7.
CONDENSER AIR OUTLET VOLUME LOW
Step 1.
Check for dirty condenser coil or guard.
Clean coil and guard (paragraph 4-4).
Step 2.
Check to see if air outlet louvers are stuck in closed position.
Free louvers and control cable. Adjust control, or notify Direct Support
maintenance if actuating cylinder is not functioning properly.
Step 3.
Check for defective HIGH-LOW condenser fan thermostatic switch.
Replace switch (paragraph 4.26).
Step 4.
Inspect for defective condenser fan.
Replace fan.
Step 5.
Test for defective fan motor.
Replace motor (paragraph 4-23).
8.
AIR CONDITIONER FAILS TO HEAT
Step 1.
Check to see if mode selector switch improperly adjusted.
Reset selector LOW heat or HIGH heat.
4-8
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