TM 9-4120-402-14
Table 4-3. UNIT TROUBLESHOOTING - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. REDUCED COOLING CAPACITY.
Step 1. Check that all doors, windows, and other openings in the room or enclosure are tightly closed.
Tightly close all openings.
Step 2. Check position of potentiometer TEMPERATURE control.
Set control at maximum COOL; then, if condition improves, adjust properly.
Step 3. Check that the louvers in the conditioned air intake and discharge grilles are properly adjusted.
(Must be open.)
Adjust louvers properly.
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