S-16C Checking Ecm Motor Windings; Checking Eem Motors - Daikin DP14UM Service Instructions Manual

SERVICING
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.
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. 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
continuity 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.
WARNING
WARNING
Motor
Connector
(3-pin)
Winding Test

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.
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.
Motor OK when
R > 100k ohm
(3-pin)
15