Table 3-1. Operator Troubleshooting

TM 5-4120-393-14

Table 3-1. Operator Troubleshooting

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

3. COMPRESSOR DOES NOT START IN COOL MODE. NO COOLING. CONDITIONED AIR FANS OPERATE, BUT

CONDENSER AIR FANS DO NOT.

NOTE

If power has just been connected to unit, a short (30 minute maximum during very

cold weather) warm up period is required. When compressor reaches a safe

operating temperature, it will come on automatically if the mode selector switch is

in the COOL mode.

Step 1. Check to see if HIGH or LOW PRESSURE CUTOUT switch has tripped.

Push and release cutout PUSH TO RESET buttons.

Step 2. Check to be sure fabric cover is rolled up.

Roll up and secure fabric cover.

NOTE

If cutout switch(es) continue to trip, contact unit maintenance.

Step 3. Check operation of mode selector switch.

Turn switch to OFF, then reset to COOL.

NOTE

Allow 30 seconds time delay before compressor starts.

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