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40MBAB: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
11
WIRING DIAGRAMS (CONT)
Fig. 16 — Wiring Diagram Sizes 36K - 60K Light Commercial Models
Table 4 — Wiring Diagram Sizes 36K - 60K Light Commercial Models
CODE
PART NAME
ECM
Indoor ECM Motor
CAP
Indoor Fan Capacitor
FAN
Indoor Fan Motor
T1
Room Temperature Sensor
T2
Coil Temperature Sensor
T2A
Indoor Coil Inlet Temperature Sensor
T2B
Indoor Coil Outlet Temperature Sensor
INDOOR UNIT
MAINBOARD
Y/ G
Cn1 8
CN2
3
Alarm
CN3
3
work
6
Cn1
0
CN
5
WATER LEVEL
CN4 6
T1
ECM
Cn15
M
4(3)
3
Cn34
CN4 3
UVLE D
Output
BLU E
RE D
RE D
TRAN S
CN2
2
RE D
CN
9
J1
CN2 9
T2
Cn1 2
3
HEA
TER
2
CN1 1
N
L
L and N :230VAC
SWITCH
Output:5VDC
Output:24VAC
Output:5VDC
Output:5VDC
Output:220V
AC
Output:12VDC
Output:24VAC
Output:15VDC
Output:220V
AC
Output:24V
AC
JR 1
CN
5
CN
4
Cn
1
CN 2
ON/OFF
Remote
Control
CN 6
CN 9
W1
CN1 0
DH
CN1 1
CN 7
2 WIR
E WIRE
CONTROLLER
CN1 4
4
48
5 POR
T
CN 3
E Y X
To CC M
Comm.Bus
Output:24V
AC
Output:24V
AC
15VDC
12VDC
15VDC
12VDC
5VDC
Output:24VAC Output:24VAC Output:24VAC Output:24VAC
DRY CONTACT
DRY CONTACT
L1
(
1
)
L2
(
2
)
S
(
3
)
RE
D
BLAC
K
YELLO
W
(WHITE
)
TO OUTDOOR UNIT
3
S
S and N :0-24VDC
Y/ G
2
2
CN 6
Output:5VDC
CN2
1
Output:12VDC
T2
A
T2
B
R C L
G Y1 Y/Y
2
B W
W2
E/AU
X
24V THERMOSTAT