Mpa And Mpb Multi-Zone - Lennox MPA009S4S Service Manual

COMP
YELLOW
CODE
COMP
CAP1
EEV
FM1
H-PRO
L
L-PRO
SV
TS
T3
T4

11.3. MPA and MPB Multi-Zone

BLACK
RED
FM1
BLUE
3
Y/G
3
W
BLACK
V
RED
U
BLUE
RED
CN54
BLUE
CN51
CN53
BLUE
CN52
YELLOW
L
PART NAME
COMPRESSOR
FAN MOTOR CAPACITOR
ELECTRIC EXPANSION
VALVE
OUTDOOR DC FAN
HIGH PRESSURE SWITCH
PFC INDUCTOR
LOW PRESSURE SWITCH
4-WAY VALVE
DISCHARGE
TEMPERATURE SENSOR
CONDENSER
TEMPERATURE SENSOR
OUTDOOR AMBIENT
TEMPERATURE SENSOR
Figure 20. 208/230V MLA024S4S-1P Outdoor Unit Wiring Diagram
2
CN6
RED
CN11
CN12
BLUE
Figure 21. 208/230V MPA018S4M-1P Outdoor Unit Wiring Diagram
SV
4-WAY1
BLUE
BLUE
HEAT1
Crankcase Heater
HEAT2
Base Pan Heater
T3
T4
H-PRO
L-PRO
L-OUT
L1 L2
1(A) 2(A) 3(A) 1(B) 2(B) 3(B)
4 WAY
PAN
VALVE
HEATER
62
EEV
CN33
CN20
YELLOW
S
CN3
BLACK
CN2
CN4
CN10
CN22
CN40
P-1
Y/G
CN44
BLACK
CN5
CN6
RED
RED
BLACK
YELLOW
BLACK
RED
1 2 3 L1 L2
L1 L2
TO INDOOR UNIT POWER SUPPLY
Y/G
INDOOR COIL OUTLET
TEMP.SENSOR
T4 OUTDOOR
TEMP. SENSOR
OUTDOOR
T3
COIL TEMP. SENSOR
T5 COMPRESSOR
DISCHARGE TEMP.
B
ELECTRONIC
EXPANSION
VALVE
A
CRANKCASE
HEATER
RED
Y/G