Run capacitor
Fig.10-2
WARNING:DISCONNECT ALL POWER TO THE OUTDOOR UNIT BEFORE BEGINNING THIS
TEST
.
ELECTRICAL
The motors in both the outdoor unit and indoor unit are similar .Outdoor motors have one speed while
The fan motor has both “Run” and “Start “windings .Extended run windings furnish a choice of speeds
with indoor products. Use an Ohmmeter to troubleshooting motors.
Fig.10-3
1. Be sure power is off to the motor.
2. Disconnect the motor wires.
3. Place one ohmmeter lead on
common
and the other on
start
.The meter should show continuity.
4. Place one ohmmeter lead on
common
and the other on
run
. The meter should show continuity with
less resistance.
5. Leave one meter lead on c
ommon
and touch each remaining lead. Each should indicate continuity.
6.
7.
MECHANICAL
Some compressors require the assistance of a hard start kit to start, it is urgest to consult the
indoor motors usually are multi-speed. All fan motors require a capacitor for the best torque and efficiency.
If
the motor is replaced,
replace the capacitor at the same time.
information.
compressor manufactores recommendations for start kits. follow the manufactores installation
MOTORS:
ELECTRICAL CHECK TO TEST FAN MOTOR:
If a winding does not show continuity, the motor has failed and must be replaced.
may be caused by excessive water. Lubrication can be washed out of permanently lubricate bearing.
If the motor needs replacing, replace the capacitor as well.
Fan motors can fail for a number of reasons, including failure bearing loss due to a lack of lubrication. This
If a motor fails, replace it with cimilar motor having
the same rotation horse power, RPM and electrical
26
Central Air Conditi
oning
Model: Heat Pump,
HR13-D2
Motor
