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4.4 I Wiring diagram
U-V-W-N Power supply (380-415V/3N/50Hz)
PHC
Phase order controller
Earth
R0
Compressor casing resistance
1-2
Pump command (8A contact maximum)
R1-R2
Anti-freeze resistance (condenser)
3-4
Electric heater command (2A contact
maximum)
ST1
Water regulation sensor
5-6
Alarm command (2A contact maximum)
ST2
Anti-freeze sensor
7-8
Remote "on/off" contact
ST3
Defrost sensor
20S
4-channel valve coil
ST4
Fluid line sensor
A1
Regulation board
ST5
Compressor backflow sensor
A2
Display board
V1-V11 Varistor
A3
Ventilation board
Z1
Filter
A4
Release board
BLK
Black
E1
High pressure switch
BLU
Blue
E2
Low pressure switch
BRN
Brown
F1
2A 5x20 electronic board protection fuse
G/Y
Green/Yellow
F2
Compressor internal safety
GRN
Green
J1
Flow controller
GRY
Grey
KA1
Pump relay
ORG
Orange
KM2
Compressor contact
RED
Red
M1-M11
Ventilator motor
VLT
Violet
M2
Compressor motor
WHT
White
MOV
Electronic regulator
YEL
Yellow