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Page Title:
COMPRESSOR STARTS, BUT GOES OUT ON OVERLOAD. |
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 TM5-4120-384-14
TROUBLESHOOTING-Continued
Table
4-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test compressor motor by checking continuity
of
the
Step
9.
following pins at the compressor electrical
(See fig. 4-4 for pin
receptacle.
identifications.)
(1)
Pins A and B, B and C, and
C
and
A.
Continuity should exist.
(2)
Pins A, B, and C and compressor
housing.
No
continuity should exist.
Pins D and E.
Continuity should exist when
(3)
compressor is cool enough for internal
If compressor is
thermostat to be closed.
hot, let cool and retest.
Report faulty
motor
to
direct
support
maintenance.
COMPRESSOR STARTS, BUT GOES OUT ON OVERLOAD.
6.
(See
Observe
fan
motor
for
failure.
Step
1.
Replace bad motor.
Check
for
high
head
pressure.
Step
2.
Check
fan
for
Clean condenser coil
and
louvers.
proper operation.
EVAPORATOR AIR OUTPUT VOLUME LOW.
7.
(See
Step
1.
Check for dirty
or
damaged
filter
or
louvers.
Clean or replace filter.
Clean
or
replace
louvers as required.
Step
2.
Check
for
dirty
or
iced
coil.
Deice
and
clean
coil.
4-34
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