SERVICING
40
WARNING
Discharge capacitor through a 20 to 30 OHM
resistor before handling.
Capacitance (MFD) = 2650 X Amperage
Voltage
S-16A CHECKING FAN AND BLOWER MOTOR
WINDINGS (PSC MOTORS)
The auto reset fan motor overload is designed to protect the
motor against high temperature and high amperage condi-
tions by breaking the common circuit within the motor, similar
to the compressor internal overload. However, heat gener-
ated within the motor is faster to dissipate than the compres-
sor, allow at least 45 minutes for the overload to reset, then
retest.
HIGH VOLTAGE!
Disconnect ALL power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do so
may cause property damage, personal injury
or death.
1. Remove the motor leads from its respective connection
points and capacitor (if applicable).
2. Check the continuity between each of the motor leads.
3. Touch one probe of the ohmmeter to the motor frame
(ground) and the other probe in turn to each lead.
If the windings do not test continuous or a reading is obtained
from lead to ground, replace the motor.
S-16C CHECKING ECM MOTOR WINDINGS
HIGH VOLTAGE!
Disconnect ALL power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do so
may cause property damage, personal injury
or death.
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 conti-
nuity to ground (pins to motor shell). If the ohmmeter
indicates 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.
Motor
Connector
(3-pin)
Motor OK when
R > 100k ohm
(3-pin)
WINDING TEST
S-16D CHECKING GE X13
TM
MOTORS
Applies to *PG15*****41A*
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
connections 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.
