TM9-4120-370-14
TO35E9-229-1
TABLE 4-2. TROUBLESHOOTING (cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 1. Check to see if high-or-low-pressure cutout switch (S5 and S6) is tripped.
Press, then release reset buttons.
Disconnect input power before performing internal electrical troubleshooting.
Voltages used can be deadly.
Step 2. Check for loose or damaged electrical connectors, or damaged wires in wiring harnesses.
Tighten or replace connectors, or repair damaged wires.
Step 3. Check operation of compressor motor thermal overload, overcurrent protector.
Test protector. Contact direct support maintenance for compressor replacement if protector is open.
Step 4. Check operation of mode selector switch (S).
Replace switch if defective.
NOT START AFTER TIME DELAY.
Disconnect input power before performing internal electrical troubleshooting.
Voltages used can be deadly.
Step 1. Check for loose or damaged electrical connectors, or damaged wires in wiring harnesses.
Tighten or replace connectors. or repair damaged wires.
Step 2. Check operation of time delay relay (K6).
Replace relay if defective.
Step 3. Check operation of compressor motor relay (K9).
Replace relay if defective.
Step 4. Check operation of circuit breaker (CB1 ) primary contacts.
Replace circuit breaker if defective.
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