FAN MOTOR CONTROL (A177) PULSE−WIDTH MODULATION (PWM)
CFM Profile Pin Select
JUMPER | JUMPER | LED | |
OFF | ON |
| |
|
|
|
|
CONTROL BOX
HEAT PUMP
CONTROL (A175)
GREEN
YELLOW
VERIFY DC VOLTAGE OUTPUT USING FAN PWM OUT AND COM TERMINALS. SEE TABLE 16 FOR OPTIMAL DC VOLTAGE BASED ON CFM PROFILE USED.
| J2 |
COM | COM |
| |
| PARK |
| FAN PWM OUT |
| FAN PWM OUT |
RED
RED
YELLOW
HIGH PRESSURE SWITCH (S4)
YELLOW
J2
GREEN |
|
RED |
|
RED | B4 FAN |
| |
BLACK MOTOR | |
BROWN |
|
YELLOW
BLUE
BLACK
YELLOW
YELLOW
FAN MOTOR
CONTROL
SEE TABLE 16 FOR CFM PROFILE
SELECTION OPTIONS.
HEAT PUMP CONTROL (A175)
Figure 34. Fan Motor Control, Wiring, Jumper Settings, Testing and LED Location
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