4.4 I Wiring diagram
U-V-W-N Power supply (380-415V/3N/50Hz)
Earth
1-2
Pump command (8A contact maximum)
Electric heater command (2A contact
3-4
maximum)
5-6
Alarm command (2A contact maximum)
7-8
Remote "on/off" contact
20S
4-channel valve coil
A1
Regulation board
A2
Display board
A3
Ventilation board
A4
Release board
E1
High pressure switch
E2
Low pressure switch
F1
2A 5x20 electronic board protection fuse
F2
Compressor internal safety
J1
Flow controller
KA1
Pump relay
KM2
Compressor contact
M1-M11 Ventilator motor
M2
Compressor motor
MOV
Electronic regulator
16
PHC
Phase order controller
R
Compressor casing resistance
ST1
Water regulation sensor
ST2
Anti-freeze sensor
ST3
Defrost sensor
ST4
Fluid line sensor
ST5
Compressor backflow sensor
V1-V11
Varistor
Z1
Filter
BLK
Black
BLU
Blue
BRN
Brown
G/Y
Green/Yellow
GRN
Green
GRY
Grey
ORG
Orange
RED
Red
VLT
Violet
WHT
White
YEL
Yellow