Lennox MLA018S4S-1P Installation Instructions

23
COMP
FM1
MAIN BOARD
RED
BLACK
U
V
W
Y/G
Y/G
L
L-PRO
T3
T4
CODE PART NAME
COMPRESSOR
HEAT1
4 WAY VALVE
COMP
EXV
ELECTRIC EXPANSION
VALVE
H-PRO
L-PRO
LOW PRESSURE SWITCH
HIGH PRESSURE SWITCH
T3
T4
OUTDOOR COIL TEMP.
SENSOR
OUTDOOR TEMP. SENSOR
P O W E R SU P P LY
H-PRO
SV
L
PFC INDUCTOR
COMPRESSOR
DISCHARGE
TEMP. SENSOR
RED
BLACK
V
U
CN19
CN51
CN55
W
EXV
BLACK
DRIVER BOARD
RED
7
7
YELLOW
BLUE
P-1
FM1
OUTDOOR DC FAN
CN53
CN20
CN34
CN3
CN4
CN10
CN40
CN22
CN44
CN8
CN9
CN7
CN2
CN1
CN5
CN54
CN52
CN33
ORANGE
ORANGE
M
5
CN6
SV
4 WAY
VALVE
ORANGE
ORANGE
CN12 CN11
BLACK
RED
BLUE
BLUE
BLUE
YELLOW
RED
BLACK
RED
BLACK
TO INDOOR COMM. BUS
XT2
YELLOW
GRAY
S1
S2
NOTEP lease use 2-core
shielded wire.
XT1
L1
L2
L1
L2
2
)(
1
( )
RED
BLACK
MAIN
TO INDOOR UNIT
POWER SUPPLY
HEAT2
HEAT1
CRANKCASE HEATER
PAN HEATER
HEAT2
Figure 36. 208/230V MPA036S4S-*P Outdoor Unit Wiring Diagram
CODE
PART NAME
COMPRESSOR
D
CT1
AC CURRENT DETECTOR
4-WAY VALVE
COMP
DCFAN1,DCFAN2
H-PRO
L-PRO
LOW PRESSURE SWITCH
HIGH PRESSURE SWITCH
T3
T4
OUTDOOR COIL
TEMP. SENSOR
OUTDOOR TEMP. SENSOR
DIODE MODULE
SV
L
PFC INDUCTOR
TH
HEATSINK TEMP. SENSOR
T5
DISCHARGE
TEMP. SENSOR
MAIN BOARD
OUTDOOR DC FAN
CN15
A
ELECTRONIC
EXPANSION
VALVE A
CN8
T5
01NC
RED
YELLOW
L-PRO
H-PRO
9NC
T4
T3
D
12
3
4
5
CN22
CN19
CN7
CN20
CN55
CN24
CN11
CN25
CN17
CN39
CN18
HEAT_D
HEAT_Y
SV
4-WAY
BLUE
BLUE
RED
BLUE
CN4
CN2
CN3
CN1
COMP
U
V
W
Y/G
DCFAN2
DCFAN1
5
5
CN6
CN5
CN8
CN15
CN9
CN14
7
5
CN6
CN3
L
YELLOW
YELLOW
U
V
W
BLUE
BLACK
RED
Y/G
CN39
WHITE
BLACK
BLACK
BLACK
RED
BLACK
RED
CN12
TH
TO INDOOR COMM. BUS
XT2
LLEY OW
ARG Y
S1
S2
NOTE：
shielded wire.
Please use 2-core
2
Y/G
P-6
CH5
CT1
L2
L1
MAIN POWER SUPPLY
XT1
TO INDOOR UNIT
L1
Y/G
RED
BLACK
XT3
1
( )
(
L2
)
2
1
( )
(
L2
)
2
HEAT_Y
CRANKCASE HEATER
PAN HEATER
HEAT_D
6
Compressor and Outdoor
Fan Control Board
Figure 37. 208/230V MPA048S4S-*P Outdoor Unit Wiring Diagram

Lennox MLA018S4S-1P Specifications

General

Brand	Lennox
Model	MLA018S4S-1P
Category	Air Conditioner
Language	English