TB-9-2320-279-13-1
TECHNICAL BULLETIN; AIR CONDITIONING SYSTEM
OPERATOR’S, UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LISTS
DECEMBER 2005
TB-9-2320-279-13-1 - Page 154 of 524
TB 9-2320-279-13-1
0014-4
AC COMPRESSOR DOES NOT SHUT OFF OR CYCLES CONSTANTLY - Continued
DRAFT
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KNOWN INFO
AC heater/evaporator blower operates.
AC compressor operates.
AC condenser core not blocked or damaged.
POSSIBLE PROBLEMS
AC compressor belts loose or damaged.
AC temperature control switch temperature
probe damaged or installed incorrectly.
AC condenser motor solenoid faulty.
AC condenser motor red wire faulty.
AC condenser motor ground wire faulty.
AC condenser motor faulty.
AC condenser assembly harness black wire
faulty.
AC harness wire 1155 faulty.
AC harness wire 1156 faulty.
AC condenser assembly harness green wire
faulty.
AC condenser motor solenoid ground wire
faulty.
2.
Are AC compressor belts
tight and free from damage?
Replace or tighten
AC compressor
belts as required
(WP 0022).
Verify
repair, go to Step 14
of this fault.
NO
YES
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TEST OPTIONS
Visual inspection.
REASON FOR QUESTION
If AC compressor belts are
missing, loose, or
damaged, AC compressor
will not operate properly.
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KNOWN INFO
AC heater/evaporator blower operates.
AC compressor operates.
AC condenser core not blocked or damaged.
AC compressor belts OK.
POSSIBLE PROBLEMS
AC temperature control switch temperature
probe damaged or installed incorrectly.
AC condenser motor solenoid faulty.
AC condenser motor red wire faulty.
AC condenser motor ground wire faulty.
AC condenser motor faulty.
AC condenser assembly harness black wire
faulty.
AC harness wire 1155 faulty.
AC harness wire 1156 faulty.
AC condenser assembly harness green wire
faulty.
AC condenser motor solenoid ground wire
faulty.
3.
Does AC condenser fan
operate when fan control
switch is set to an on position
and temperature control
switch is set to the coldest
temperature position?
Go to Step 5 of this
fault.
NO
YES
TEST OPTIONS
Visual inspection.
REASON FOR QUESTION
If AC condenser fan does not
operate, AC system will
not operate properly.
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