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3) Inspection and Repairs of Water Inlet Valve
4) Defects and Relevant Parts
Defects
Descriptions
Causes
Inpsection Method
Repair Method PCB Error
Mode
Water supply
unavailable
Water is not
supplied despite
the "drone"
Faucet is turned off. Check whether the faucet is turned on Turn on the faucet
"IE"
Short coil
Check whether the inter-terminal
resistance of inlet valve is 4.3kΩ
Exchange the part if
it is open
"IE"
Excessive impurities
on SUS filter
Unplug the inlet hose and then check
the impurities
Remove impurities
and "cleanse" the filter
"IE"
Water supply
unavailable
Water supply
continues with
the power "ON"
Impurities in valve Check the malfunctions in valve
Exchange the inlet valve "IE"
Disconnected
connector
Check the connection of connector
with naked eyes
Reconnect the
connector
"IE"
Coil wire
Check whether the inter-terminal
resistance of inlet valve is 4.3kΩ
Exchange the inlet
valve
"IE"
Disconnection in
wiring
Check any disconnections in wiring
-> Inspect circuit
Exchange the
harness
"IE"
Constant
water supply
(into tub)
Power is "OFF"
Constant leaks
on sides
Defective water
level sensor
See the inspection of "Water Level"
defects
Exchange the water
level sensor
"E2"
Inspect any openings and
blockages in pressure hoses
Inspect any openings and blockages
in pressure hoses
Exchange the
defective part
"E2"
Defective valve
Check the malfunctions in valve
Exchange the inlet valve
-
Others
Check any leaks
from the sides of
inlet valve
Check any leaks from the sides of
inlet valve
Exchange the inlet
valve
-
Unavailable
water
supply
PCB
1. Inspect the insertion of
PCB pin
Easily detachable if the
wire is pulled
Housing on pin
connection not
properly inserted
Insert the housing
on pin connection
completely
2. Unavailable power or
water supply to inlet valve
terminal
Open or destroyed PCB
inlet circuit (Water relay
unavailable)
Defective inlet
circuit
Exchange the PCB
Incessant
water
supply
PCB
1. Water supply starts
promptly when the power
is turned "ON".
Short circuit in PCB
inlet circuit or water
relay (Incessant electric
transmission to valve)
Short circuit in
water relay
Exchange the PCB
Inlet Valve 1. Examine whether the water
supply continues even when
the power supply is cut off
Deformed water inlet
valve bellows
Defective inlet
valve
Exchange the inlet
valve
Synchronous
Drain Motor
(Valve
Housing)
1. Examine the operation/
water supply of inlet valve
2. Examine the drainage
through the drainage hose
3. Check any impurities in
valve housing
• Unclosed due to
impurities in
drainage housing
• Impurities in
valve housing
• Impurities
• Error in returns
of synchronous
motor
• Remove impurities
• Remove impurities
• Exchange the
synchronous motor
