Lennox MPA009S4S Service Manual page 73

M 3
5
DC MOTOR
FAN
DRIVER MODULE
WHITE
BLUE
BLACK
Figure 41. MCFA024S4-1P Unit Wiring Diagram
INDOOR UNIT MAINBOARD
5
CN13
DC MOTOR
DRIVER MODULE
FAN1
CN3
3
M
FAN
CN19 CN16
(E)
X Y S1 S2
Y/G
To CCM
Comm.Bus
Y/G
Figure 42. MCFA036S4-1P Unit Wiring Diagram
INDOOR UNIT MAINBOARD
Ceiling-Floor Type
CN15
CN21
CN24
CN3
CN23 CN33
ON/OFF ALA RM
FILTER-BOARD
Remote Alarm
Control Output
CN8
Ceiling-Floor Type
CN18
CN21
CN24
CN10A
CN6
CN7
CN5
CN23 CN33
ON/OFF ALA RM
Ferrite bead
Remote
Alarm
Control Output
• • • • •
To outdoor This symbol indicates the element is
Comm.Bus
optional,the actual shape shall prevail.
73
• • • • •
This symbol indicates the element is
optional,the actual shape shall prevail.
RED
CN8
RED
CN18
Reactor
5 5
M
5
5
VSWING(INACTIVE)
SWING
10 5
DISPLAY TO WIRE
CN10A
BOARD CONTROLLER
CN6
4
BLACK
INDOOR COIL TEMP. SENSOR
WHITE
ROOM TEMP. SENSOR
CN5
WATER LEVEL SWITCH
Y/G
YELLOW
BLACK
RED
1 2 3
RED
RED
Reactor
5 5
M
M
5
5
M
VSWING(INACTIVE)
SWING
10 5
DISPL AY TO WIRE
BO AR D CONTROLLE R
T2
4
BLACK
INDOOR COIL TEMP. SENSOR
T1
WHITE
ROOM TEMP. SENSOR
T2B
OUTER PIPE TEMP. SENSOR
WATER LEVEL SWITCH
Y/G
BLACK
FILTER-BOARD
RED
Y/G
L1 L2
M
M
T2
T1
Y/G