Controller Pcb: Type Awo 301.A25 To A60 - Viessmann VITOTRONIC 200 Service Instructions Manual

PCBs and connection options
Controller PCB and EEV PCB

Controller PCB: Type AWO 301.A25 to A60

For allocation to heat pump type: See "Overview of
PCBs".
G0
J1
A
U1
B
U2
U3
J2
GND
U4
U4
C
U5
J3
+Vdc
+5VR
GND
U6
U7
J4
+Vdc
D
E
+5VR
GND
U8
U9
U10
J5
+Vdc
F
+5VR
GND
GND
G
Y1
J6
Y2
Y3
H
DI1
K
DI2
J7
L
DI3
M
DI4
GND
Fig. 80
Power supply 230 V/50 Hz
A
Secondary circuit return temperature sensor
B
(NTC 10 k )
Ω
Secondary circuit flow temperature sensor in the
C
heat pump (NTC 10 k
Type AWO 301.A25 and A40: Low pressure sen-
D
sor
Type AWO 301.A60: Flow switch
E
High pressure sensor
F
Fan PWM signal
G
Fan status input
H
Soft starter status input
K
Circuit breaker status input
L
310
[6]
)
Ω
Vout
J9 Rx-/Tx-
V
Rx+/Tx+
GND
Rx-/Tx-
U
J11
Rx+/Tx+
GND
Rx-/Tx-
J14
Rx+/Tx+
GND
J15
NO1
J16
NC1
T
C1
S
Out2
J17
C2
Out3 R
J18
C2
Out4
J19
C2
Out5
J20
C2
C2
J21
V-IN
Out6
J22
C6
N
Out7
J23
C7
Out8
J24
C8
Low pressure switch
M
Voltage 230 V~
N
Type AWO 301.A25 and A40: Electric ribbon
P
heater (oil sump heater)
4-way diverter valve
Q
Fan control
R
Compressor 2 control
S
Compressor 1 control
T
Modbus connecting cable to the controller and
U
sensor PCB, connection X18
Type AWO 301.A60: Modbus connecting cable to
V
the EEV PCB [6], connection
Q
P
in Fig. 81
D