DOWNLOAD LG F1403YD25 / F1403YD26 Service Manual ↓ Size: 38.49 MB | Pages: 51 in PDF or view online for FREE

Model
F1403YD25 F1403YD26
Pages
51
Size
38.49 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
f1403yd25-f1403yd26.pdf
Date

LG F1403YD25 / F1403YD26 Service Manual ▷ View online

25
Is the water coming in
drawer continuously
Replace the 
Main PCB
.
After power off for 10 sec. and power on.
Does the water level over reference line and Is 
not
the water level frequency 26.2Khz ?
Or does 
not
the water level over reference line and is the water level frequency 26.2Khz ? 
* Water level frequency
- Press and Hold 
'Intensive' 
'Option(Left)'
simultaneously.
Replace the 
Inlet Valve
assembly.
YES
If FE is displayed again, 
then replace the 
Pressure Switch
.
If FE is displayed again, 
then replace the 
Main PCB
.
Check the 
Air Chamber
and the 
Tube
(clogged).
NO
NO
YES
Over Flow Error (FE)
The digits means water level frequency. (10
-1
kHz)
ex) 241 : Water level frequency = 241 x 10
-1
kHz
24.1 kHz
26
Is the air chamber and the tube clogged?
Replace the 
Main PCB
.
Is the 
Connector
connected correctly to
the 
Main PCB
and the 
Pressure Switch
?
Or is the 
Harness
alright ?
Reconnect or repair the 
Connector
.
Or replace the 
Harness
.
Check air chamber and remove the foreign material.
Replace the 
Pressure Switch
.
YES
YES
NO
Is the resistance of the 
Pressure Switch
out of range? 
[Pin1 ~ Pin3] 
21~23Ω)
NO
NO
YES
Pressure Sensor S/W Error (PE)
27
1
NO
Is the door closed?
Is the Door assembly in line with door
switch ? 
Lift up & Close the door. 
If the dE is displayed, Replace the 
Door Bracket
.
Close the door totally.
YES
Reconnect or repair the 
Connector
.
Or replace the 
Harness
.
NO
Replace the 
MAIN PWB
ASSEMBLY.
NO
Replace the 
Latch Hook
.
NO
Replace the 
Door switch
.
NO
Does the 
Spring
of 
Latch Hook
actuate? 
Door Open Error (dE)
YES
YES
YES
NO
Touching
or
Is the 
Connector
connected correctly to
the 
Main PCB
and the 
Door Switch
?
Or is the 
Harness 
alright ?
YES
Is there clicking sound once or twice when the
START/PAUSE button is pressed to start the
cycle? No    Replace the  MAIN PWB ASSEMBLY.
Scratch by Latch Hook
Does the 
Door Switch
operate as follows?
* Door Locking time : 
1~8
sec.
Check the time between from
input the power to parts
move up, then Door locked.
* Door Releasing time : 
25~100
sec.
Check the time between from
off the power to parts
move down, then Door released.
1
1
28
YES
Is the resistance of the 
Thermistor
out of range 44 ~
53 KΩ at 25°C? (Page 17) 
Replace the 
Main PCB
.
Is the 
Connector
connected correctly to 
the 
Main PCB
and the 
Thermistor
and the 
Heater
?
Or is the 
Harness
alright ?
Reconnect or repair the 
Connector
.
Or replace the 
Harness
.
Replace the 
Thermistor
.
YES
Replace the 
Heater
.
YES
NO
Is the resistance of the 
Heater
out of range 24.5 ~
28.5Ω (for Washing) or 42.5 ~ 49.5Ω (for Steam) ?
(Page 19) 
[Note] Thermistor Spec
NO
NO
Thermistor (Heating) Error (tE)
S
P
E
C
Temp
30 °C
40 °C
60 °C
70 °C
95 °C
105 °C
Resistance (kΩ)
MIN
36.35
39.45
42.72
24.20
26.05
27.97
11.43
12.12
12.82
8.088
8.514
8.940
3.544
3.791
4.045
2.617
2.816
3.023
STD
MAX
Heater for Washing
Heater for Steam
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