TM9-4120-398-14
TABLE 4-2. UNIT TROUBLESHOOTING-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. Check for clogged air filter.
Step 4. Check for defective thermostatic control switch (S2).
Step 5. Check for defective condenser fan motor.
If problem still exists, refer to supervisor.
EXCESSIVE COOLING.
5.
Step 1. Check for defective thermostatic control switch (S2).
Step 2. Check for defective time delay relay (K6.)
Step 3. Check for defective compressor motor starter (K3.)
If problem still exists, refer to supervisor.
6.
Check for unit loose on base.
Tighten hold-down bolts as necessary.
If problem still exists, refer to supervisor.
4-15