41
2) Defect Inspection
Defect in
Water
Level
Detection
• Water level
surpasses the
preset level.
• Defect in pressure sensor
• Defective PCB
• Defect in water level detection circuit
• Bending or partial blockages of pressure sensor hose
• Defect in pressure sensor
• Air leaks in pressure sensor hose
• Defective PCB
• Low frequency from pressure sensor
• Defective PCB
• Impurities in air trip inlet
• Defect in pressure sensor (Defective oscillating condenser)
• Impurities in air trip inlet
• Defective PCB
• Water supply
continues despite
the high water
level.
• Display of "E9"
• The water level is
wrongly measured.
• Defect in water level detection circuit
• Water level runs
below the preset
level.
• The reset level is
immeasurable.
Defects
and Errors
Details
Causes
Inspection of Defects
and Errors
Resolution
PCB Error
Mode
Incessant
water
supply
Water
continues to
be supplied
although the
inlet valve is
functioning
well.
Defect in the bellows
of water level sensor
Check the frequency
Exchange the
water level sensor
"E2"
Defect in pressure
sensor hoses
Check the frequency
Exchange the hose "E2"
Inspect any openings
Exchange the hose "E2"
Blockages in pressure
sensor hoses
Inspect with naked eyes Remove
impurities
"E2"
Occurrence
of "E9"
The water level
sensor
transmits the
frequency of
15KHz or lower
or 30KHz or
higher.
Disconnected
connector
Inspect the connection of
connector with naked eyes
Re-insert
"E9"
Defect in water level
sensor
Check the frequency
Exchange the
water level sensor
"E9"
Disconnected wire
Inspect the wire
connection -> Inspect
the circuit
"E9"
DWM30-999PG(영_SM).indd 41
16. 8. 23. 오전 10:10
