Panasonic NA-148VB3WRU / NA-128VB3 / NA-147VB3 / NA-127VB3WRU Service Manual ▷ View online
37
11.5. Valve
Valve is an electrical and mechanical component which is
designed to take water from the network system into the wash-
ine machine. It is operated by PCB card.
designed to take water from the network system into the wash-
ine machine. It is operated by PCB card.
11.5.1. Technical Features
11.5.2. Checking of Component
Check the resistance value on the component with multimeter
as shown in below pictures.
as shown in below pictures.
Valve water flow rate should be between 6 lt/min - 8 lt/min.
Each valve bobbin resistance values should be between 3,3 -
4.2 kohm.
4.2 kohm.
Checking the component
11.5.3. Component Controlling By Con-
nection Measurement
You can determine the ohm value of the main wash valve by
measuring from the blue cable at 5th and white cable at 15th
position or the pre-wash valve by measuring from the black
cable at 14th and white cable at 15th position in the large
socket (refer to 13 Wiring Connection Diagram) as shown in
belows figures.
Each valve bobbin resistance values should be between 3,3 -
4.2 kohm.
measuring from the blue cable at 5th and white cable at 15th
position or the pre-wash valve by measuring from the black
cable at 14th and white cable at 15th position in the large
socket (refer to 13 Wiring Connection Diagram) as shown in
belows figures.
Each valve bobbin resistance values should be between 3,3 -
4.2 kohm.
Nominal voltage
220 - 240 V
Nominal power
8 VA
Frequency
50-60 Hz
Rated flow:
7 lt/min (±15 %)
Operating water
pressure
pressure
0.0,3 - 1 Mpa
38
11.6. Electronic Pressure Switch (EPS)
11.6.1. Technical Features
Electromagnetic field occurs as a result of the vibration of the membrane which is under pressure in the coil. The nucleus part is
moved up and down by the electromagnetic field. The water level is regulated by the frequency which is controlled by the PCB and
changes according to the movement of the nucleus part.
moved up and down by the electromagnetic field. The water level is regulated by the frequency which is controlled by the PCB and
changes according to the movement of the nucleus part.
11.6.2. Checking of Component
1. Push the door lock slider with screwdriver.
2. Select the 1st program and start the machine.
3. Cut off the energy input when the water intake finishes
and drum begins to rotate.
4. Check the water level inside the drum with ruler. It should
be 10 cm ±1.
39
11.7. Motor (For NA-127VB3 and NA-147VB3)
The washing machine has an asynchronous motor. It is controlled by the PCB.
It is essential to check the motor for correct diagnosis and quick servicing. In the below picture, socket points on the motor is shown
to measure with multimeter.
to measure with multimeter.
Motor Socket Terminals
Tacho and stator (full field-half field) ohm resistance values for the motor types are listed in the below table.
Resistance values for the motor types
11.7.1. Resistance Controlling By Connec-
tion Measurement (Tacho)
You can determine the ohm value by measuring from the pink
cable at 16th and red cable at 6th position in the large socket
(refer to 13 Wiring Connection Diagram) as shown in belows
figures. For resistance values, refer to the table.
cable at 16th and red cable at 6th position in the large socket
(refer to 13 Wiring Connection Diagram) as shown in belows
figures. For resistance values, refer to the table.
11.7.2. Resistance Controlling By Connec-
tion Measurement (Stator)
You can determine the ohm value by measuring from the brown
cable at 8th and black cable at 18th position in the large socket
(refer to 13 Wiring Connection Diagram) as shown in belows
figures. For resistance values, refer to the table.
cable at 8th and black cable at 18th position in the large socket
(refer to 13 Wiring Connection Diagram) as shown in belows
figures. For resistance values, refer to the table.
MOTOR CODE
SUPPLIER
STATOR (FULL FIELD) (ohm)
TACHO (ohm)
TEMPERATURE
32013066
ANAIMEP
1.2
Ω ±0,08
180 ±20
20
°C - 25 °C
40
11.8. Motor (For NA-128VB3 and NA-148VB3)
The washing machine has an asynchronous motor. It is controlled by the PCB.
It is essential to check the motor for correct diagnosis and quick servicing. In the below picture, socket points on the motor is shown
to measure with multimeter.
to measure with multimeter.
Tacho and stator (full field-half field) ohm resistance values for the motor types are listed in the below table.
Resistance values for the motor types
11.8.1. Resistance Controlling By Connec-
tion Measurement (Tacho)
You can determine the ohm value by measuring from the pink
cable at 16th and red cable at 6th position in the large socket
(refer to 13 Wiring Connection Diagram) as shown in belows
figures. For resistance values, refer to the table.
cable at 16th and red cable at 6th position in the large socket
(refer to 13 Wiring Connection Diagram) as shown in belows
figures. For resistance values, refer to the table.
11.8.2. Resistance Controlling By Connec-
tion Measurement (Stator)
You can determine the ohm value by measuring from the brown
cable at 8th and black cable at 18th position in the large socket
(refer to 13 Wiring Connection Diagram) as shown in belows
figures. For resistance values, refer to the table.
cable at 8th and black cable at 18th position in the large socket
(refer to 13 Wiring Connection Diagram) as shown in belows
figures. For resistance values, refer to the table.
MOTOR CODE
SUPPLIER
STATOR (FULL FIELD) (ohm)
TACHO (ohm)
TEMPERATURE
32006966
ACC
2,7 ±0,2
184 ±13
20
°C - 25 °C
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