Panasonic NA-128VA2, Service Manual

Page: 26 / 49

13 ERROR DISPLAY
Indication
U 2
U
U
(Incase of U11)
Contents Detect contents Check point Method to clear
Unable to drain Incase won't detect
reset point in 12 min.
After starting of drain.
Is something wrong with the drain hose?
Is lint clogging it?
Check if condition of the water level detector.
The door is
open Door is opening at start
point of the operation. Is the door open? Close the door to
start operation.
U 3
Unbalanced
load Detect unbalanced
load at spin process.
Chack if clothes are not tangled in the drum.
Check if the washer is not installed on an unstable or
sloping floor.
After solving proble-
ms, open the door
and close it, and
then restart
operation.
U 4 Unable to
supply water It's takes over 20 min.
to reach specified water
level.
It's takes over 20 min. to reach water level.
Check if condition of the water valve.
Is the filter of the feed valve clogged?
specified
U 8
h0
Drain filter is
not set
Water level
detector
Detect drain filter is
securely tightened
Input frequency from the
water level detector is
out of rated frequency.
Check if drain filter is securely tightened during the
operation.
Check if
Replace water level detector.
PC Board (Power side).
condition of the connectors.
Replace
Turn off the power
h04 Short circuit of
power relay on
the PC.Board Detect short circuit of
the power relay on the
PC Board. Replace PC Board. Remove the power
plug
h05 Data shall not
be memorized. Data won't saved to the
micro processor(In case
of service check mode-B). Replace PC Board (Power side).
Effected service mode (Check mode-B) only.
Turn off the power h07 Malfunction of
rotary detector. Input signal from the
rotary detector when
operating the motor
shall be occurred out of
standard. Check if condition of the connector and lead wire of
the rotary detector.
Replace the motor.
Replace the PC Board (Power side).
Remove the power
plug h09 Open circuit of
the PC Board's
communication
line Won't communicate
between the main micro
processor and the
indication micro
processor. Check if lead wire condition of PC Board between
power and operation side, and replace one of PC
Boards.
h 7 Open circuit or
short circuit of
the thermistor
TH4 Detect abnormal signal
from the thermistor TH4 Check if condition of the connectors.
Replace the thermistor TH4
Turn off the power
Set the drain filter
properly
Turn off the power
After solving
problems, open
door and close it,
and then restart
operation.
the
-26-
After solving proble-
ms, open the door
and close it, and
then restart
operation.
NA-168VX2/168VG2/148VA2/128VA2/147VB2