Table 4-1. Troubleshooting (continued)
TEST OR INSPECTION
INSUFFICIENT COOLING (continued)
Inspect and test pressure equalizer solenoid valve (paragraph 3-13c).
Repair or replace damaged or defective pressure equalizer solenoid valve
Replace dehydrator (figure 4-16).
Restriction in liquid line.
evacuate system (figure 4-4), and recharge the system with refrigerant
REFRIGERANT SYSTEM CONTINUOUSLY LOOSING REFRIGERANT
Using available leak detector, check refrigerant tubing and components for leaks.
Repair leaks if possible. Replace unrepairable tubing or components.
Check for defective pressure relief valve (paragraph 4-13).
Replace defective pressure relief valve.
AIR CONDITIONER NOISY DURING OPERATION
Check air conditioner operating pressures for excessive refrigerant in system (table 4-3).
Release excess refrigerant from system until the proper charge is attained
between rotating compressor components.
Replace compressor (paragraph 4-22).
Inspect expansion valve and check superheat (paragraph 4-15).
Repair or replace damaged or defective expansion valve.
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