Panasonic NA-F78B2, NA-F80B2, NA-F80H2, NA-F90B2, NA-F90H2 Service Manual

Order No. PHAT100601CE

(Revision : Oct. 2011)

Service Manual

Fully Automatic Washing Machine

NA-F78B2
NA-F80B2
NA-F80H2
NA-F90B2
NA-F90H2
NA-F1002B

© Panasonic Home Appliances (Thailand) Co., Ltd. 2010.
All rights reserved. Unauthorized copying and distribution
is a violation of law.

There are special components used in this equipment which are important for safety. These parts are marked by
in the Schematic Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that
these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do
not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

WARNING

The service information is designed for experienced repair technicians only and is not designed for use by the general
public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting
to service a product. Products powered by electricity should be serviced or repaired only by experienced professional
technicians. Any attempt to service or repair the product or products dealt within this service information by anyone
else could result in serious injury or death.

Product Colour

Silver (A)

White (D)

Grey (J)

Destination

Thailand, Indonesia, Vietnam, Malaysia, India

Singapore (Local), Singapore (Export)

Philippines, UAE (Local), Kuwait

Qatar, Oman, Bahrain, Lebanon

UAE (PGF), Libya

- 2 -

CONTENT

Page

3
4
5
6
7

8
9
9
9

10

11

12

12
13

14

15 - 16

17
17

18
19
20
21
22
23
24
25
26
27
28
29
30

1. Attention in the Repair Work Security

2. Specifications

3. Features and Technical Information

3.1 Function Control with Fuzzy sensor

3.2 Power input and current

4. Installation

4.1 Checking of placement

4.2 Connect the water supply hose

4.3 Install Washing Machine to steady

4.4 Child Lock program

5. Operations Panel

5.1 NA-F78B2 / NA-F80B2 / NA-F90B2 / NA-F1002B

5.2 NA-F80H2 / NA-F90H2

6. Wiring Diagram

6.1 NA-F78B2 / NA-F80B2 / NA-F90B2 / NA-F1002B

6.2 NA-F80H2 / NA-F90H2

7. Table of Errors

8. Troubleshooting

8.1 Table of Troubleshooting

8.2 The following symptoms are not trouble

9. Disassembly Instruction

9.1 Remove screws of back panel out

9.2 Remove back panel out

10. Parts Exploded View and Replacement Parts List

10.1 Parts Exploded View : Part A

10.2.1 Replacement Parts List : Part A of NA-F78B2 / NA-F80B2 / NA-F90B2 / NA-F1002B

10.2.2 Replacement Parts List : Part A of NA-F80H2 / NA-F90H2

10.3 Parts Exploded View : Part B

10.4.1 Replacement Parts List : Part B of NA-F78B2 / NA-F80B2 / NA-F90B2 / NA-F1002B

10.4.2 Replacement Parts List : Part B of NA-F80H2 / NA-F90H2

10.5 Parts Exploded View : Part C

10.6.1 Replacement Parts List : Part C of NA-F78B2 / NA-F80B2 / NA-F90B2 / NA-F1002B

10.6.2 Replacement Parts List : Part C of NA-F80H2 / NA-F90H2

10.7 Parts Exploded View : Packing Part

10.8.1 Replacement Parts List : Packing of NA-F78B2 / NA-F80B2 / NA-F90B2 / NA-F1002B

10.8.2 Replacement Parts List : Packing of NA-F80H2 / NA-F90H2
Detail Change Notice

NA-F78B2 / F80B2 / F80H2 / F90B2 / F90H2 / F1002B

- 3 -

1. ATTENTION IN THE REPAIR WORK SECURITY

In order to prevent any accident during repair work and ensure security of the product after repair work,
somethings surely followed are explained below.

Connectionof cables should be done according to regular work.

• Connection of cables should be tightened reliably with strength using solderless terminal.
(specified parts always using regular bonding plier)

• Install a fire protection cover (fireproof) covering connectin area completely, and close opening
areas by tape. (Please reuse the fire protection cover which came with the products).

• When drawing cables around, fixing those cables with cable suppression part. Do not touch
rotating part, high temperature part and surface of metal.

• Be sure to replace with cable unit when any cable was snapped. When a part of the cable unit
was cut, you must not do the connection repair. It may be the cause of smoke, ignition or
receiving an electric shock.

Please wear gloves when disassembling, replacing and assembling.

Always wear gloves to prevent an injury by the metal end face or an electric shock at the time of
the electricity service

Please be careful to the edges of the metal end face.

Wear the working clothes of long sleeves to prevent an injury by the metal end face or please
work after covering the end face with tape or towel.

Be careful about receiving an electric shock.

When doing electric connection service
such as voltage measurement, please be
careful enough about receiving an electric
shock at electric charging parts and cable
terminal parts.

■ The level of the arised damages or dangers, when indicated contents are ignored, are classified by

following indications and explained.

WARNING

ATTENTION

The content in the column of this indication is
“ Be assumed that possibly die or get seriously injured ”.

This figured symbol means caution “ ATTENTION ”

This figured symbol means must not do “ PROHIBITION ”

This figured symbol means surely execute “ INSTRUCTIONS ”

The content in the column of this indication is
“ Be assumed that possibly get damages or possibly only damage object occured ”.

■ Types of the contents being followed are classified by following figured symbols and explained.

(The following is an example of expression in pictures)

WARNING

Pull out electric plug when doing repair work.

Disassembling, assembling and replacing
parts should be done after pulling out
electric plug. Receiving an electric shock
or getting an injury may occur.

Rebuilding is prohibited.

Do not rebuild machine parts and
components when repairing service.
It may be the cause of damage or ignition.

Straightly pull out or insert in huasuton terminal.

Do not twist it. It may be the cause of
damage or ignition.

Slow rotation may also roll in your hands
and cause injury.

Be sure to use specified parts.

Always use specified parts for the parts
with mark in the electric circuit
diagrams and parts list. It may be the
cause of smoke, ignition or damage.

Do not touch any rotating object with hand
unless it stops completely.

ATTENTION

NA-F78B2 / F80B2 / F80H2 / F90B2 / F90H2 / F1002B

- 4 -

2. SPECIFICATIONS

NA-F78B2 / F80B2 / F80H2 / F90B2 / F90H2 / F1002B

Model NA-F78B2 NA-F80B2 NA-F80H2 NA-F1002B NA-F90B2 NA-F90H2

Rate voltage 220V/50Hz Vietnam

IndonesiaVietnam

Thailand, Vietnam,

Sin-RBD, UAE-PGF,

Libya

Thailand, Vietnam,

Sin-RBD, UAE-PGF,

Libya

India

Thailand, Vietnam,

Sin-RBD

Sin-DBDSin-DBDSin-DBD, India

Philippines

Malaysia, UAE (AFP),

Kuwait, Oman, Qatar,

Bahrain, Lebanon

Malaysia

GreyGreyGrey

470W/260W 450W/230W

490W/300W 470W/260W

510W/330W 510W/330W

490W/300W 470W/260W

150 Wh 140 Wh

170 Wh 150 Wh

170 Wh 160 Wh

170 Wh 150 Wh

150 Liter 154 Liter

8.0 Kg 9.0 Kg

8.0 Kg

110 r / min

740 r / min

554 mm. x 598 mm. x 998 mm.

597 mm. x 619.5 mm. x 1031 mm.

41 Kg

45 Kg

0.03 to 1 MPa (0.3 to 10 Kgf / cm2) / 8 ~ 25 liter / min.

Thermal Protector

Input : 320 Watts / Output : 180 Watts

Checking Unbalance / Tub Lid

Rings when finishing washing or unusual

Have

Have

Have

Have

9.0 Kg

Grey Silver Silver

Philippines

Malaysia, UAE (AFP),

Kuwait, Qatar, Oman,

Bahrain, Lebanon

and Frequency

230V/60Hz

230V/50Hz

240V/50Hz

230V/60Hz

230V/50Hz

220V/50Hz

240V/50Hz

230V/60Hz

230V/50Hz

220V/50Hz

240V/50Hz

Wash

Spin

Body

Installation

Accessories

Packing

Colour

Rate Power

Consumption

(Wash / Spin)

Power

Consumption

(NA-F80 / F90)

Standard Water Consumption

Standard Capacity

Pulsator with rated load (r.p.m.)

Spin Tub with rated load (r.p.m.)

Outer Dimension

Product Weight

Water Supply Pressure

Motor

Motor Power

Safety Switch

Alarm

Fabric Softener Dispenser

Filter

Automatic Power - Cut Switch

Bleach Dispenser

Standard Water Consumption

Model : NA-F78B2 / NA-F80B2 / NA-F80H2 / NA-F1002B Model : NA-F90B2 / NA-F90H2

Standard Water Consumption

High

<High Lower>

Medium

<Medium Lower>

Low 1

<Lower 1 Lower>

Low 2

<Lower 2 Lower>

Low 3

<Lower 3 Lower>

High

<High Lower>

Medium

<Medium Lower>

Low 1

<Lower 1 Lower>

Low 2

<Lower 2 Lower>

Low 3

<Lower 3 Lower>

Wash Level Water Only Clothes Weight

Wash Level

Clothes WeightWater Only

77 Liters
72 Liters
65 Liters
61 Liters
55 Liters
51 Liters
45 Liters
41 Liters
35 Liters
18 Liters

8.0 Kgs

6.0 Kgs

5.0 Kgs

4.2 Kgs

3.5 Kgs

2.5 Kgs

1.5 Kgs

1.1 Kgs

0.8 Kgs

0.3 Kgs

69 Liters
65 Liters
60 Liters
56 Liters
52 Liters
48 Liters
43 Liters
38 Liters
33 Liters
18 Liters

77 Liters
72 Liters
65 Liters
61 Liters
55 Liters
51 Liters
45 Liters
41 Liters
35 Liters
18 Liters

9.0 Kgs

6.0 Kgs

5.0 Kgs

4.2 Kgs

3.5 Kgs

2.5 Kgs

1.5 Kgs

1.1 Kgs

0.8 Kgs

0.3 Kgs

71 Liters
65 Liters
60 Liters
56 Liters
52 Liters
48 Liters
43 Liters
38 Liters
33 Liters
18 Liters

- 5 -

3. FEATURES AND TECHNICAL INFORMATION

NA-F78B2 / F80B2 / F80H2 / F90B2 / F90H2 / F1002B

Product special features

• Dial indicating detergent level after sensing wash level

• Pre-set timer

• Fabric softener dispenser

• Detergent dispenser

• Automatic power-off when finish

• Dial indicating unusual sign (LED will blink)

• Alarm ON-OFF

• Overflow sensing device

• Ag Shower (NA-F80H1 / NA-F90H1 only)

- This has the disinfection effect with Ag+

- This can be used for the course marked with ★

High Medium Low

Low Pulse Number High

Weight Sensor

The weight is sensed by the moving force of the Pulsator,
which changes a capacitor pole and releases a signal wave.
The wave is changed into a pulse number from which the
clothes weight is sensed. Prior to weight sensing for Normal
and Strong program, the machine runs without water by
spinning the Pulsator to left and right for 4.2 seconds
(ON 0.3 second- OFF 0.4 second).
The motor stops (OFF), a water system counts the pulse
number, then calculates the accumulated pulse numbers for
drawing water into the tub over a defined level. The dial will
indicate High wash level.

Program Time

Normal

Mini

Soak

High Speedy

Blanket

Delicate

Tub Hygiene

Soak 1 hour

Soak 8 hour

Approx. 47 - 56 min

Approx. 20 min

Approx. 107 min

Approx. 21 - 27 min

Approx. 55 min

Approx. 29 - 32 min

Approx. 150 min

Approx. 107 min

Approx. 527 min

- 6 -

NA-F78B2 / F80B2 / F80H2 / F90B2 / F90H2 / F1002B

3.1 Function Control with Fuzzy sensor

Clothes quantity checking, wash level indication and detergent consumption indication with Fuzzy Logic
System.

1. Check clothes quantity and specify the amount of
detergent

1. Wash timer and spin timer with checked clothes quantity

2. Additional wash timer and spin timer as temperature
increases

<Motor status>

Turn Switch “ON”

Press “Start” button

1. Check clothes quantity

2. Check ambient
temperature

A. Check clothes
quantity
B. Control wash time
C. Control spin time

Supply water to a proper
level

WASH

RINSE

SPIN

Switch will automatically
cut the power current
“OFF”

Spin Timer +0 min. +1 min. +2 min. +0 min.

Wash Timer +0 min. +2 min. +3 min. -1 min.

External temp. 25°C 15°C 5°C 30°C

High

3.0 Kg and more

Medium

1.2 Kg~3.0 Kg

Low

0 Kg~1.2 Kg

Wash Timer 12 min. 12 min. 9 min.

Spin Timer 6 min. 6 min. 5 min.

2. Temperature checking

Check temperature in the atmosphere when the machine
starts. In case of low temperature, wash timer and spin timer are
extended automatically so that washed clothes are as clean as
washing in high temperature.

<Checking Method>
Check cross pressure at the
capacitor while the Pulsator operates
without water.

Rotate clockwise

stop

Rotate
anti-clockwize

stop

Rotate clockwise

stop

Rotate
anti-clockwize

stop

Rotate clockwise

stop

Rotate
anti-clockwize

stop

- 7 -

NA-F78B2 / F80B2 / F80H2 / F90B2 / F90H2 / F1002B

This clause of SA60335-2-4 and SA60335-2-7 is applicable except as follows.

3.2

Power input and current

Note: To determine the value, integrate the data for 2min after 5min from
starting motor and convert based on duty ratio of water flow for that period.

Water load Water loadRated load Rated load

1.6 - 2.4 1.6 - 2.41.8 - 2.6 1.8 - 2.8

306 - 374

Current (A)

Power consumption (W) 324 - 396405 - 495 423 - 517

220V 50Hz

1.6 - 2.4 1.6 - 2.41.8 - 2.6 1.8 - 2.8

342 - 418

Current (A)

Power consumption (W) 360 - 440423 - 517 441 - 539

220 - 240V 50Hz

2.1 - 2.9 2.1 2.92.2 - 3.0 2.2 - 3.0

387 - 473

Current (A)

Power consumption (W) 414 - 506459 - 561 486 - 594

230V 60Hz

(1) Washing

NA-F90H2

Power source

NA-F80H2

Water load Water loadRated load Rated load

0.7 - 1.3 0.7 - 1.30.8 - 1.4 0.9 - 1.5

193 - 237

Current (A)

Power consumption (W) 216 - 264207 - 253 234 - 286

220V 50Hz

0.7 - 1.3 0.9 - 1.50.8 - 1.4 0.9 - 1.5

221 - 269

Current (A)

Power consumption (W) 252 - 308234 - 286 270 - 330

220 - 240V 50Hz

1.1 - 1.9 1.1 - 1.91.2 - 2.0 1.2 - 2.0

270 - 330

Current (A)

Power consumption (W) 279 - 341297 - 363 297 - 363

230V 60Hz

NA-F90H2

Power source

NA-F80H2

Note: To determine the value, integrate the data for 2.5min after 3.5min from
starting motor and convert based on duty ratio of water flow for that period.

(2) Spinning

- 8 -

4. INSTALLATION

NA-F78B2 / F80B2 / F80H2 / F90B2 / F90H2 / F1002B

4.1 Checking of placement

Hose extension

If extended external part is necessary when connecting the drain hose, the length of the drain hose should be
less than 3 m and the height should be below 10 cm.

Nut

3 m max.

Do not put hose tip
under the water

Over 10 cm

Install the machine 10 cm or more away from the wall.

Good Example

Below 10 cm

Connect the water supply hose
to the water supply valve screw.

1. Push the water supply hose nut straights onto
the water supply valve screw.

2. Hold the elbow by lifting it up, screw the nut
onto the water supply valve screw, and fi rmly
tighten the nut.

3. After the nut is tightened, check whether or
not the elbow is unsteady or loose.

4. After tightening, open the faucet to confi rm
that there is no water leakage.

[Cautions]

Firmly tighten the nut, otherwise water leakage
will result.

Water Pressure Rating :

2.9 x 104 ~ 9.8 x 105 Pa

Elbow

Water supply
valve screw

- 9 -

NA-F78B2 / F80B2 / F80H2 / F90B2 / F90H2 / F1002B

4.2 Connect the water supply hose

[Note]

- Firmly tighten part B of the water tap adaptor,
otherwise water leakage will result.

- If a water tap adaptor is already connected,
replace with the attached new one.

- When the hose must be reinstalled (after you
remove, for example), turn B to the lelt until
about 4 mm of the thread becomes visible,
then carry out the procedure described above.

4.4 Child Lock program

Press the [POWER OFF/ON] button for at least
5 seconds. The buzzer sounds (two time for
setting) and the [CHILD LOCK] indication turns
on.

Open lid

Close lid

Buzzer on

Buzzer off

Water drain

Buzzer on and
abnormal alarm

Unplug the power
cord from the
outlet and re-plug
it again after
5 seconds

Less than
10 sec.

More than
10 sec.

Water faucet

Water supply
hose cover

A

B

Screw (4)

Water tap
adaptor

Lever

Approx. 4 mm

B

4.3 Install Washing Machine to steady

1. Turn the adjustable leg knob towards (Loosen)
direction to loose it.

2. Turn the adjustable leg to adjust the levelness.

2.1 When increasing height, turn adjustable leg
towards (Loosen) direction.

2.2 When decreasing height, turn adjustable leg
towards (Tighten) direction.

3. Turn the adjustable leg knob towards (Tighten)
direction to tighten it.

If the floor is largely inclined

Use board or
a like for prop
up under leg
of washing
machine

Adjust Height of leg

Adjustable leg knob

Adjustable leg

Loosen

To raise

To lower

Tighten