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3. Control Board Diagram
a) Auxiliary Code U-1, U-2, U-3, V-0, A-0
Pins 1-4 shorted: 3 phase control
Pins 1-4 open: Booster Tank control
Internal Booster Tank Thermistor
Wash Tank Thermistor
Buzzer Output
X5
X4
MC2
X1
MC1
X1
3
X2
X3
X6
X7
5
7
Water Valve
1
XA Connector
XA Connector
XH Connector
Door Switch
Wash Tank Electrode
(Water Level Sensor)
[Communication]
Operation Panel
Board
(
Shielded Wire
)
1
2
3
4
5
Internal Booster Tank Water Level Float Switch
Internal Booster Tank Backup Water Level Float Switch
Phase Reversal Input
1
(
CN1
)
41
(
CN2
)
6
(
CN3
)
(
CN4
)
(
CN9
)
(
CN8
)
(
CN7
)
(
CN5
)
(
CN11
)
(
CN10
)
(
CN6
)
(
CN12
)
(
CN13
)
Transformer
11V 7.7V
Wash Pump
Rinse Pump
Wash Tank Heater
[External
Relay]
*1 Connectors CN 1 - 4 are VH Connectors
JWE-620UA-6B
1
2
3
4
1
2
3
1
2
1
4
1
2
3
1
2
1
2
5
6
1
2
3
4
5
6
7
8
9
10
MC3
Booster Tank Heater
1
200V from Transformer