Lennox MCA Series Service Manual

9
SWING MOTOR1
M
YELLOW
RED
M
5
1
2
3
BLACK
CN10A
8
OP TI ON
AL
ADAPTER BOARD
0
0
8
8
4
4
1
1
2
2
3
3
5
5
6
6
7
7
C
C
9
9
A
A
B
B
D
D
E
E
F
F
1
1
2
2
ON
ON
0
0
8
8
4
4
1
1
2
2
3
3
5
5
6
6
7
7
C
C
9
9
A
A
B
B
D
D
E
E
F
F
1
1
2
2
ON
ON
0
0
8
8
4
4
1
1
2
2
3
3
5
5
6
6
7
7
C
C
9
9
A
A
B
B
D
D
E
E
F
F
1
1
2
2
ON
ON
0
0
8
8
4
4
1
1
2
2
3
3
5
5
6
6
7
7
C
C
9
9
A
A
B
B
D
D
E
E
F
F
1
1
2
2
ON
ON
ENC2+S1
ENC2+S1
0~F
0~F
0~F
0~F
0~F
0~F
0~F
0~F
NETADDRESS
NETADDRESS
CODE
CODE
0~15
0~15
16~31
16~31
32~47
32~47
48~63
48~63
FOR SETTING NETADDRESS
FOR SETTING NETADDRESS
CN 50 1
CN 40 3
X Y E
To LVM
Comm.Bus
YELLOW
BROWN
RED
5
5
OPTIONAL
4
NOTE: COMPONENT IN
DASH LINE IS OPTIONAL
OR FIELD WIRING
CN 40 2
S5
FOR REMOTE ON/OF
FACTORY SETTING
MODE
REMOTE ON/OFF OFFREMOTE ON/OFF ON
(T1)
(T2)
DISPLAY BOARD
CN 3 (C N3
CN 2 (C N2 01 )
Wired Controller
Programmable
Wired Controller
Note: The programmable wired
controller and LVM use the same
port CN403.
Non-Programmble
Figure 8. 18K - 208/230VAC Indoor Unit Wiring Diagram
CN6
CN6
CN3
CN2
RED
RED
CN_TO
TRANSFORMER
CN5
INDOOR MOTOR
INDOOR MOTOR
INDOOR UNIT
TO OUTDOOR UNIT
CN_TIN
Y/G
BLUE
BLUE
5-WAY TERMINAL
MAIN BOARD
MAIN BOARD
WIRING DIAGRAM
WIRING DIAGRAM
2
1
1(2)3(4)
1(2)3(4)
2(4)
2
1
2
1
2
1
2
1
2
1
CN_L1
M
~
M
~
2
2
WHITE
WHITE
CN_N1
CN_S
FAN CAPACITOR BOARD
FAN CAPACITOR BOARD
PC1_1
PC1_1
PC2_1
PC2_1
1 2 3 4 5
1 2 3 4 5
SWING MOTOR
SWING MOTOR
M
M
5
5
1 2 3 4 5
1 2 3 4 5
CN10
CN10
T1_room
T2_pipe
CN4
CN4
3
3
WHITE
WHITE
WHITE
WHITE
3
3
1
1
2
2
1
1
2
2
3
3
0
0
8
8
4
4
1
1
2
2
3
3
5
5
6
6
7
7
C
C
9
9
A
A
B
B
D
D
E
E
F
F
1
1
2
2
ON
ON
0
0
8
8
4
4
1
1
2
2
3
3
5
5
6
6
7
7
C
C
9
9
A
A
B
B
D
D
E
E
F
F
1
1
2
2
ON
ON
0
0
8
8
4
4
1
1
2
2
3
3
5
5
6
6
7
7
C
C
9
9
A
A
B
B
D
D
E
E
F
F
1
1
2
2
ON
ON
0
0
8
8
4
4
1
1
2
2
3
3
5
5
6
6
7
7
C
C
9
9
A
A
B
B
D
D
E
E
F
F
1
1
2
2
ON
ON
ENC2+S1
ENC2+S1
0~F
0~F
0~F
0~F
0~F
0~F
0~F
0~F
NETADDRESS
NETADDRESS
CODE
CODE
0~15
0~15
16~31
16~31
32~47
32~47
48~63
48~63
FOR SETTING NETADDRESS
FOR SETTING NETADDRESS
DI SPLAY BOARD
8
8
Wi red Co ntroller
OPTI ONAL
ADAPTER BOARD
CN3(CN301)
CN501
CN403
X Y E
To LV M
Comm.Bus
YELLOW BROWN
RED
5
5
5
5
Pr ogrammable
Wi red Cont roller
OPTI ONAL
4
4
Note: The pr ogrammable wi red
controller and LVM use the same
CN2(CN201)
CN402
NOTE: COMPONENT IN
DASH LINE IS OPTIONAL
OR FIELD WIRING
S5
S5
FOR REMOTE ON/OF
FOR REMOTE ON/OF
FACTORY SETTING
FACTORY SETTING
MODE
MODE
REMOTE ON/OFF OFF
REMOTE ON/OFF OFF
REMOTE ON/OFF ON
REMOTE ON/OFF ON
Non-Programmble
port CN403.
Figure 9. 24K - 208/230VAC Indoor Unit Wiring Diagram

Lennox MCA Series Specifications

General

Brand	Lennox
Model	MCA Series
Category	Air Conditioner
Language	English