MCAC-HTSM-201906 Midea R410A Direct Heating Type HPWH 50Hz Technical Manual
22
Figure 2-6.2:Wiring diagram of RSJ-200/SZN1-540V1
Yellow
Circulating
Pump
CN31
POWER
CN32
TRANS IN
COMPA COMPB
CN13
CN41
CYC-PUMP HEAT
CN24
ALARMFROST-HEAT
CN25
EXV
CN28
WEEV
CN36
POWER
CN38
TRANS OUT
CN3
Pro_Water
CN2
ON/OFF
CN39
QE P
CN40
CN15
PRO-L
CN21
PRO-H
CN35
T5
CN34
T1
CN26
Th
CN27
Tp
CN29
T7
CN30
T6
CN37
T4 T3
FAN_H FAN_L
CN42
HEAT-R
Transformer
Electric
Expansive valve
Main Control Board
White Black
Yellow
CN43
T6b
S1
SW1
CHECK
4-WAY
CN16
SV1
CN17
CRANK
CN11
SV2 ON
CN57
SV2 OFF
CN56
CT1
CN7
FANH FANL HEAT-R
Red
4-WAY
R
e
d
W
h
i
t
e
B
l
u
e
Black
CT1
AC Contactor I
R
e
d
Black
R
e
d
W
h
i
t
e
B
l
u
e
Current Leakage
Protector
B
l
u
e
QEP
ON
34
DIP
2
ON
34
DIP
2
S3
1
S1
ADDRRSS
Default
Settings
Y/G
Power Input
Crank
E-heating
A B P Q E W1 W2 W3 W4 G S1 S2 O1 O2 M1 M2
CN3
CN1
CN2
A1
A2
1
3
5
2
4
6
CN1
CN2
CN3
CN4
CN5
CN6
RY1
RY2
L
A B C N C1 C2 H1 H2 A1 A2
B
r
o
w
n
Electric
Auxiliary Heater
T7
Th TP
5
4
4
White
FAN Drive board
8
9
A
B
C
D
E
F
7
6
5
4
3
2
1
0
Y/G
SV2
T6
ON
34
DIP
2
ON
34
DIP
2
S3
1
Warm water valve
SV1
Compressor
Fan
Capacitor
Black
Black
Low wind
High wind
R
e
d
W
h
i
t
e
B
l
u
e
R
e
d
W
h
i
t
e
B
l
u
e
Black
B
l
u
e
Black
Black
Black
R
e
d
B
l
u
e
B
l
u
e
Black
R
e
d
R
e
d
W
h
i
t
e
B
l
u
e
Black
R
e
d
W
h
i
t
e
B
l
u
e
Black
AC Contactor II
W
h
i
t
e
Black
Black
R
e
d
B
r
o
w
n
B
r
o
w
n
B
l
u
e
B
l
u
e
B
l
u
e
B
l
u
e
B
l
u
e
W
h
i
t
e
W
h
i
t
e
W
h
i
t
e
B
l
u
e
B
l
u
e
R
e
d
W
h
i
t
e
B
l
a
c
k
R
e
d
W
h
i
t
e
Black
Yellow
R
e
d
R
e
d
W
h
i
t
e
B
l
u
e
Black
Passive switch signal output only,
can’t drive the device directly
Wire controller
power supply
Communicate with
wire controller
and other units
Please use shield wire to
connect and connect
shield terminal to
Water flow
switch
Remote
on/off
Host unit is valid and don’t connect to the slave unit
L
o
w
p
re
s
s
u
re
p
ro
te
c
tio
n
s
w
itc
h
H
ig
h
p
re
s
s
u
re
p
ro
te
c
tio
n
s
w
itc
h
A
i
r
s
u
c
t
i
o
n
t
e
m
p
.
s
e
n
s
o
r
Air discharge temp.sensor
I
n
l
e
t
w
a
t
e
r
t
e
m
p
.
s
e
n
s
o
r
O
u
t
l
e
t
w
a
t
e
r
t
e
m
p
.
s
e
n
s
o
r
r
e
f
r
i
g
e
r
a
n
t
h
e
a
t
i
n
g
p
i
p
e
t
e
m
p
.
s
e
n
s
o
r
A
m
b
i
e
n
t
t
e
m
p
.
s
e
n
s
o
r
E
v
a
p
o
r
a
t
o
r
p
i
p
e
t
e
m
p
.
s
e
n
s
o
r
Refrigerant heater
Blue
Red
Black
Refrigerant heater
Blue
Red
Black
B
r
o
w
n
B
l
u
e
B
r
o
w
n
B
r
o
w
n
W
h
i
t
e
Remote
Alarm
HL HL HN HN
B
r
o
w
n
B
r
o
w
n
Black Brown
120K
N
1
1
L
2
1
N
1
2
L
2
2
TCO
B
l
a
c
k
W
h
i
t
e
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