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HCU1 - HCU2 - HCU3 Electrical diagram
K0
*
*
Lc
M5
F5
Low pressur switch
F6
High pressure switch 25/17 bar
F8
Klixon protection (thermic)
K0
Door switch
K1
Compressor contactor
RA
Start contactor
R5
Capacitor resistor
P< High
*
F6
M3
as
F8
pr
M1
Probe n1 (Cold room [NTC])
Probe n2 (End defrost [NTC])
Power supply 220Vac [N]
Power supply 220Vac [Ph]
Compressor
Condenser fan
Evaporator fan
Cod. 34000
Pb1
Cold room temperature probe (NTC)
Pb2
End defrost temperature probe (NTC)
Y2
Hot gas solenoid for defrost
M1
Compressor
M2, M4 Condenser fan
M3, M5 Evaporator fan
A1
Electronic board
POWER 1Ph+N+Pe
L1
N
*
M2
M4
*
*
P>
Low
U1
F5
K1
UP
2
5
RA
1
4
R5
C1
C2
1
Probe signal ground
2
3
5
Digital input ground
7
Digital input 2
13
14
15
Out A
16
17
Out B
Defrost/
18
19
21
Out C
22
23
Out D
Alarm
24
A1
Lc
U1
C1 (
C2 (
*
102
1
2
3
4
5
6
7
8
9
Pb1
Pb2
K1
Y2
Cold room light
Condenser fan controller
Start capacitor
48mF)
Run capacitor
25mF)
optional
Code 33344
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