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4
Wiring diagrams
4.6
ARC/ARH 150 – 175 wiring diagrams
30
31
x2
R
24V
B
1
2
3
4
+
+
S4
14
15
16
17
c
B21
a
White
b
Black
A
S1 configuration on A1 board (VCH models)
B
Thermostat
C
Electronic board [A1]
D
Compressor 2
E
YKTOOL connection
F
RS-485 connection
G
Shielded cable, 10 x 0,22 mm
H
Electronic board [A2]
I
Accessories connection
J
Indoor fan motor trip switch
K
High and low pressure switch 1
L
Outdoor fan motor trip switch 1
M
4-way valve 1
64
32
33
EEV-1
a
b
c
d
5
6
7
8
9
10
11
12
13
EEVC-1
18
19
20
21
22
24
25
26
b a
SP-1
2
34
35
36
EEV-2
a
b
c
d
1
2
3
4
5
6
7
+
+
EEVC-2
S4
14
15
16
17
18
19
20
c
b a
B22
SP-2
c
Red
d
Green
N
High and low pressure switch 2
O
Outdoor fan motor trip switch 2
P
4-way valve 2
a
Black connector
b
Green connector
c
White connector
d
Yellow connector
e
Red connector
B1, B5
Suction probe
B2, B6
Liquid probe
B3, B7
Discharge probe
B4
Outdoor probe
B8
Supply probe
8
9
10
11
12
13
21
22
24
25
26
I-2650a (4/4)
ARH 150 y 175
ARC 150 y 175
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