Troubleshooting _ 27
Error T
ype
Error Mode
Causes
Corrective Actions
Description of Photo
W
ater
Supply
Error
4E
•
W
ater
supply
value
fault
•
Main
PCB
fault
•
Freezing
in
the
winter
season
•
If
the
water
supply
valve
has
a
wi
re
disconnected,
replace
it.
•
Check
whether
the
water
supply
valve
is
clogged
with
foreign
material
and
whether
water
is
supplied
continually
.
•
Check
whether
no
water
is
suppli
ed
because
of
freezing
in
the
winter
season.
•
If
the
PBA
relay
operates
abnorm
ally
, replace
the
PBA.
1.
Check
the
resistance
for
the
water
supply
valve.
-
Resistance:
0.9~1.1kΩ
between
the
terminals
of
the
water
supply
valve.
2.
Check
whether
there
is
foreign
material
in
the
water
supply
valve
filter
.
3.
If
the
water
supply
valve
filter
is
clogged,
clean
filter
.
d
rain Error
5E
•
Freezing
in
the
winter
season
•
Foreign
materials
in
the
drain
pump
•
Poor
physical
connection
•
Drain
pump
fault
•
Main
PCB
fault
•
If
the
drain
pum
p
revolutions
are
restrained
due
to
freezing
in
the
winter
season,
check
the
method
to
remove
the
freezing
and
remove
as
directed.
•
Check
whether
the
revolutions
of
the
drain
pump
motor
are
restrained
by
foreign
material,
and
remove
as
directed.
•
Check
the
wire
connectors
on
Ma
in
PCB
and
Drain
Pump
ASSY
. The
connector
or
wire
may
have
poor
physical
connection.
•
Check
the
drain
pump
resistance
.
Check
the
drain
pump
resistance.
- Drain
:
Resistance
:
13.5Ω
~
16.5Ω
- Bubble
:
Resistance
: 18.75Ω
~
22.75Ω
Communication Error
AE
•
The
signals
bet
ween
the
sub
and
main
PBAs
are
not
sensed.
•
Incorrect
wire
connections
between
the
sub
and
main
PBAs.
•
Check
the
wire
connections
and
terminal
contacts
between
the
sub
and
main
PBAs.
•
Check
for
disconnected
wires.
•
Check
whether
the
sub
PBA
is
short-circuited
because
of
moisture.
•
If
the
m
ain
PBA
’s
communication
circuit
is
faulty
, replace
it.
-
