Haier MRV II - R22 System

- 139 -
1.2 R22 system
1.2.1 Master unit: AU96NMTAHA, AU78NMTAHA
1.2.2 Slave unit: AU96NMTAAA, AU78NMTAAA
M
fan motor
4-way
valve
spray
valve
unloading
valve
fan
oil
equalization
valve
pressure
equalization
valve
oil
return
valve
crankcase
heater
PTC
transformer
power block
communication
terminal block
communicate
to indoor
Forbidden to connect high voltage electricity.
communicate
to slave unit
M
P
P
LD3LD1 LD2
LD4
4
5
SW5
SW3 SW4
SW6 SW7 SW8
P
250
VACT8A
250
VACT3.15A
fuse
relay
SW1
CONNECTING PCB
SW2
+
~
( )
-( )( )
~
-
electrolytic
capacitor
concrete
resistor
reactor
concrete
resistor
electrolytic
capacitor
~
+
( )
( )
-
+
power module
INVERTER PCB
0010524242
R
R
R
GR
R
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
oil temp.
sensor
suction
sensor
W
W
W
W
W
W
W
high pressure
switch
low pressure
switch
inner thermal
protector
BL
BL
BL
BL
BL
BL
BL
B
BR
BR
fuse
BL
BL
BL
G
G
G
B
B
B
B
GR
GR
GR
B
B
R
R
R
R
R
R
R
R
R
mutual transducer
high
pressure
sensor
low
pressure
sensor
discharging
sensor
ambient
sensor
defrost
sensor
EEV
R
R
R
R
R
Y
YO
Y
R
W
B
BB
B
L
BL
BL
Y
Y
Y
B
Y
Y
BR
G
BR
B
power supply: 3N~, 380V, 50Hz
B
C
compressor
filter
capacitor
current
detector
W:white R:red BL:blue Y:yellow B:black
G: green BR:brown GR:gray O: orange
Part 4
21
CN15 W
LPS
CN14 R
HPS
CN10 R
SV1
CN13 Y
S
V
2
CN6 Y
S
V
5
CN5 R
S
V
4
CN12 BL
4WV
CN9 BL
SV7
CN8 G
A
H
CN7 G
C
H
CN4 G
M
G
-
S
W
CN11 W
SV3
2
1
3
2
1 3
2
1 3
2
1
3
2
1 3
4
2
1
3
2
1
34
2
1 3
4
2
1
3
21
3
21
G
G
1
2
L
R
W
4
solenoid
valve
solenoid
valve
4-way
valve
spray
valve
unloading
valve
oil
equalization
valve
oil
return
valve
heater
heater
low pressure
switch
power block