LG WF-HD120S Service Manual page 47

4-8-1 TROUBLESHOOTING WITH ERROR
PRESSURE SENSOR ERROR
Is displayed?
Yes
Is the connector connected
to pressure sensor
disconnected or
disassembled?
No
Is the resistance of the
pressure sensor out of
range?
(pin 1~ pin 3)
(21~23 10%)
No
Is the AIR CHAMBER and the
tube clogged?
No
Replace the MAIN PWB
assembly
Reconnect or
repair
Yes
the connector
Replace the
pressure
switch
Yes
Fix the air
chamber
Yes
and remove
the foreign
material
46