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SERVICING
30
S-16C CHECKING ECM MOTOR WINDINGS
APH15 M Series Only
WARNING
1. Disconnect the 5-pin and the 16-pin connectors from the
ECM power head.
2. Remove the 2 screws securing the ECM power head and
separate it from the motor.
3. Disconnect the 3-pin motor connector from the power head
and lay it aside.
4. Using an ohmmeter, check the motor windings for continu-
ity to ground (pins to motor shell). If the ohmmeter indi-
cates continuity to ground, the motor is defective and must
be replaced.
5. Using an ohmmeter, check the windings for continuity (pin
to pin). If no continuity is indicated, the thermal limit (over
load) device may be open. Allow motor to cool and retest.
16-pin
connector
5-pin
connector
3-pin motor
connector
S-16D CHECKING GE X13
TM
MOTORS
GPH15 M Series Only
The GE X13
TM
Motor is a one piece, fully encapsulated, 3 phase
brushless DC (single phase AC input) motor with ball bearing
construction. Unlike the ECM 2.3/2.5 motors, the GE X13
TM
features an integral control module.
Note: The GE TECMate will not currently operate the GE X13
TM
motor.
1. Using a voltmeter, check for 230 volts to the motor connec-
tions L and N. If 230 volts is present, proceed to step 2. If
230 volts is not present, check the line voltage circuit to
the motor.
2. Using a voltmeter, check for 24 volts from terminal C to
either terminal 1, 2, 3, 4 or 5, depending on which tap is
being used, at the motor. If voltage present, proceed to
step 3. If no voltage, check 24 volt circuit to motor.
3. If voltage was present in steps 1 and 2, the motor has failed
and will need to be replaced.
Note: When replacing motor, ensure the belly band is between
the vents on the motor and the wiring has the proper drip loop
to prevent condensate from entering the motor.
C
LG N
123
4
5
High Voltage
Connections
3/16"
Low Voltage Connections
1/4”
GE X13
TM
MOTOR CONNECTIONS
S-17 CHECKING COMPRESSOR WINDINGS
WARNING
HERMETIC COMPRESSOR ELECTRICAL TERMINAL
VENTING CAN BE DANGEROUS. WHEN INSULATING
MATERIAL WHICH SUPPORTS A HERMETIC COM-
PRESSOR OR ELECTRICAL TERMINAL SUDDENLY
DISINTEGRATES DUE TO PHYSICAL ABUSE OR AS A
RESULT OF AN ELECTRICAL SHORT BETWEEN THE
TERMINAL AND THE COMPRESSOR HOUSING, THE
TERMINAL MAY BE EXPELLED, VENTING THE
VAPOR AND LIQUID CONTENTS OF THE COMPRES-
SOR HOUSING AND SYSTEM.