COMPRESSOR STARTS NORMALLY, BUT HIGH OR LOW PRESSURE CUTOUT SWITCH SOON TRIPS. COOLING STOPS. (Cont)

TM 5-4120-393-14

Table 3-1. Operator Troubleshooting

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 4. Check to be sure that condenser fans are operating and that air is being discharged from condenser air

outlets.

If fans are not operating, shut unit OFF and contact unit maintenance.

Step 5. With unit operating in COOL mode, check condition of refrigerant in sight glass. Check after 15 minutes

of operation in full DECREASE and COOL mode.

If indicator color is in the yellow zone or numerous bubbles appear in the window, turn mode selector

switch to OFF and contact unit maintenance.

Step 6. Check that lower front panel is not loose or missing.

Lower front panel must be secure.

3-5