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TM5-4120-387-14
TABLE 3-1. TROUBLESHOOTING (Cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 6.
With unit operating in COOL mode, check condition of refrigerant in
sight glass.
If indicator color is in the yellow zone or numerous bubbles
appear in window, turn selector switch to OFF and notify your
supervisor and Direct Support Maintenance.
5.
REDUCED HEATING 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 operation of Temperature control thermostat.
Set control to fully INCREASE; then, if condition improves,
adjust properly.
3-11
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