Daewoo D-CV701PC Series Service Manual page 44

2) Defect Inspection
Defects
Details
and Errors
Incessant Water
water continues to
supply be supplied
although the
inlet valve is
functioning
well.
Occurrenc The water level
e of "E9" sensor transmits
the frequency of
15KHz or lower
or 30KHz or
higher.
• Display of "E9"
• Water level
surpasses the
preset level.
• Water supply
continues despite
Defect in
the high water
Water
level.
Level
Detection
• Water level runs
below the preset
level.
• The reset level is
immeasurable.
• The water level is
wrongly measured.
Inspection of Defects
Causes
Defect in the bellows
Check the frequency
of water level sensor
Defect in pressure
Check the frequency
sensor hoses
Inspect any openings
Blockages in pressure
Inspect with naked eyes
sensor hoses
Disconnected
Inspect the connection of
connector
connector with naked eyes
Defect in water level
Check the frequency
sensor
Disconnected wire
Inspect the wire connection
-> Inspect the circuit
• Defect in pressure sensor
• Defective PCB
• Bending or partial blockages of pressure sensor hose
• Defect in pressure sensor
• Air leaks in pressure sensor hose
• Defective PCB
• Impurities in air trip inlet
• Low frequency from pressure sensor
• Defective PCB
• Defect in pressure sensor (Defective oscillating condenser)
• Impurities in air trip inlet
• Defective PCB
43
Resolution
and Errors
Exchange the
water level sensor
Exchange the
hose
Exchange the hose
Remove
impurities
Re-insert
Exchange the
water level sensor
• Defect in water level detection circuit
• Defect in water level detection circuit
PCB Error
Mode
"E2"
"E2"
"E2"
"E2"
"E9"
"E9"
"E9"