Table 3-1. Operator Troubleshooting

5-4120-386-14

3-4. TROUBLESHOOTING TABLES-Continued.

Table 3-1. Operator Troubleshooting - Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. INSUFFICIENT COOLING (Continued).

Step 5. Check liquid sight indicator to see whether there is sufficient

refrigerant in the system.

If sight glass is not full and clean report to Direct Support

Maintenance Personnel.

Step 6. Check to see whether evaporator fan switch is set at low speed.

Reset switch to high speed,

Step 7. Check to see that sufficient air is passing through condenser coil by

placing a piece of paper on the condenser guard. The paper should be

held against the guard by the air.

Remove any obstructions from condenser inlet and outlet.

Make sure that condenser louver outlet is open.

3. NO HEAT OR LOW HEAT.

Step 1.

See that mode selector switch is properly set.

Set switch on LOW HEAT or HIGH HEAT.

Step 2. Make sure that temperature selector switch is set correctly.

Reset switch.

Step 3. Check for sufficient air movement over heaters by placing a piece of

paper in front of the evaporator inlet louver. The paper should be held

against the louver by the air.

Remove any obstructions from evaporator inlet and discharge

louvers. Make sure that evaporator inlet louver blades are open.

3-3