Checking Fan And Blower Motor Windings (Psc Motors); Checking Eem Motors - Daikin M Series Service And Troubleshooting

SERVICING
6. Place leads from C – FAN
7. Compare to capacitor rating label.
If the reading is within the tolerance listed on rating label
the capacitor is good.
If the reading is lower, the capacitor is bad and must be
replaced.
Testing Capacitance
Discharge capacitor through a 20 to 30 OHM resistor before
handling.
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
conditions by breaking the common circuit within the motor,
similar to the compressor internal overload. However, heat
generated within the motor is faster to dissipate than the
compressor, allow at least 45 minutes for the overload to
reset, then retest.
High Voltage!
Disconnect all power before servicing or
installing. 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.
WARNING
WARNING
If the windings do not test continuous or a reading is
obtained from lead to ground, replace the motor.

Checking EEM Motors

The EEM motor is a one piece, fully encapsulated, 3 phase
brushless DC (single phase AC input) motor with ball
bearing construction. The EEM motor features an integral
control module.
Motor
Connector
(3-pin)
Winding Test
Note: The GE TECMate will not currently operate the
EEM 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.
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