43
Check the frequency
Check the frequency
Inspect any openings
Inspect with naked eyes
Inspect the connection of
connector with naked eyes
Check the frequency
Inspect the wire connection
-> Inspect the circuit
2) Defect Inspection
Details Causes
Resolution
Incessant
water
supply
Occurrenc
e of "E9"
Water
continues to
be supplied
although the
inlet valve is
functioning
well.
The water level
sensor transmits
the frequency of
15KHz or lower
or 30KHz or
higher.
Defect in the bellows
of water level sensor
Defect in pressure
sensor hoses
Blockages in pressure
sensor hoses
Disconnected
connector
Defect in water level
sensor
Disconnected wire
Exchange the
water level sensor
Exchange the
hose
Exchange the hose
Remove
impurities
Re-insert
Exchange the
water level sensor
"E2"
"E2"
"E2"
"E2"
"E9"
"E9"
"E9"
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
Inspection of Defects
and Errors
PCB Error
Mode
