
Section 4 Component Teardown
4-7
Power Cord And Fan Motor Capacitor Removal
(Heater Equipped Models)
To remove the power cord and fan motor capacitor:
1. Disconnect power supply from unit.
2. Remove the front panel assembly. Pull the unit from
the cabinet wrapper/sleeve. Remove the blower
scroll front cover and left bulkhead partition screws.
Cut retaining straps securing the wiring harness in
the control box area.
3. Discharge capacitor.
4. Disconnect wire leads from fan motor capacitor.
5. Extract screw that secures the fan motor capacitor
to the bottom of the control box. Remove capacitor.
6. Disconnect power cord wire leads from capacitor and
terminal block.
7. Extract the two screws securing the power cord to
the bottom of the control box. (See Figure 4-13)
8. Extract the ground screw securing the power cord
ground wire to bottom of control box.
9. Cut any retaining straps securing power cord to unit,
then pull power cord from unit.
Capacitor Removal
4. Follow steps 1-3 above.
5. Disconnect wire leads from capacitor.
6. Extract screw securing the capacitor mounting strap
to bottom of control box and remove from unit.
Thermistor Removal
1. Disconnect power supply from unit.
2. Remove the front panel assembly. Pull the unit from
the cabinet wrapper/sleeve. Remove the blower
scroll front cover and left bulkhead partition screws.
Cut retaining straps securing the wiring harness in
the control box area.
3. Cut any retaining straps securing the thermistors to
other wires or components.
4. Disconnect thermistor wire leads from control board,
then pull from unit. (See Figure 4-14)
Figure 4-13. FAM Series With Heat
Shown with control board removed.
Terminal
Block
Power
Cord
Ground
Screw
Capacitor
Screw
Fan Motor
Capacitor
Screw
Screws
Transformer
To discharge the high voltage capacitor, wait for 60
seconds and then short-circuit the connection of the
high-voltage capacitor (that is the connecting lead of
the high-voltage rectifier) against the chassis with the
use of an insulated screwdriver.
CAUTION
Transformer Removal
The transformer is mounted to the lower section of the
control box compartment. The screws are accessible
only after the left bulkhead partition is re moved with
the electronic components.
1. Disconnect power supply from unit.
2. Remove left bulkhead partition.
3. Disconnect wire leads from transformer at the
control board.
4. Extract the two screws securing transformer to the
bottom of control box. (See Figure 4-13)
CN6
CN1
CN3
CN4
CN7
P4
P3
P2
P8
CN1
CN5
P7
L
M
H
Brown
Blue
Blue
Blue
Blue
White
White
White
Yellow
Yellow
Red
Red
Red
Red
Black
Green
Black
Black
RY7
RY6
Comp
4
4
3
3
C
S
R
Compressor
M
Cap.
Trans.
Display
Control
Board
Ambient Sensor
Evap. Sensor
Daht Sensor
M
Fan
Power
Heater
Figure 4-14. FAM Series With Heat
Wiring Schematic
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