H
I
J
K L
M
N O
P
a
b
c
A
B
C
G
D
E
F
a
b
c
d
A1
e
I-2576-2b (2/2)
A
S1 configuration on A1 board (VCH models)
a
Black connector
B
Thermostat
b
Green connector
C
Electronic board [A1]
c
White connector
D
Compressor 2
d
Yellow connector
E
YKTOOLN2 connection
e
Red connector
F
RS-485 connection
B1, B5
Suction probe
G
Shielded cable, 10 x 0,22 mm
2
B2, B6
Liquid probe
H
Electronic board [A2]
B3, B7
Discharge probe
I
Accessories connection
B4
Outdoor probe
J
Indoor fan motor trip switch
M1
Compressor
K
High and low pressure switch 1
M2
Indoor fan
L
Outdoor fan motor trip switch 1
M3
Outdoor fan
M
4-way valve 1
FC
Phase control
N
High and low pressure switch 2
O
Outdoor fan motor trip switch 2
P
4-way valve 2
Wiring diagrams
2
Unit wiring diagrams
2.5
55