Daewoo D-CV701PC Series Service Manual page 39

3) Inspection and Repairs of Water Inlet Valve
Defects Descriptions
Water Water is not
supply supplied despite
unavailable the "drone"
Water Water supply
supply continues with
unavailable the power "ON"
Constant Power is "OFF"
water supply Constant leaks
(into tub) on sides
Others
4) Defects and Relevant Parts
Unavailabl PCB 1. Inspect the insertion of
PCB pin
e water
supply
2. Unavailable power or
water supply to inlet valve
terminal
Incessant PCB 1. Water supply starts
water promptly when the power
is turned "ON".
supply
Inlet Valve 1. Examine whether the water
supply continues even
when the power supply is
cut off
1. Examine the
Synchronous
Drain Motor operation/water supply of
(Valve inlet valve
2. Examine the drainage
Housing)
through the drainage hose
3. Check any impurities in
valve housing
Causes Inpsection Method
Faucet is turned off. Check whether the faucet is turned on
Short coil
Check whether the inter-terminal
resistance of inlet valve is 4.3kΩ
Excessive impurities Unplug the inlet hose and then check
on SUS filter the impurities
Impurities in valve Check the malfunctions in valve
Disconnected Check the connection of connector
connector
with naked eyes
Coil wire Check whether the inter-terminal
resistance of inlet valve is 4.3kΩ
Disconnection in Check any disconnections in wiring
wiring -> Inspect circuit
Defective water See the inspection of "Water Level"
level sensor
defects
Inspect any openings and Inspect any openings and blockages
blockages in pressure hoses in pressure hoses
Defective valve Check the malfunctions in valve
Check any leaks from Check any leaks from the sides of
the sides of inlet valve inlet valve
Easily detachable if
the wire is pulled
Open or destroyed PCB
inlet circuit (Water
relay unavailable)
Short circuit in PCB
inlet circuit or water
relay (Incessant electric
transmission to valve)
Deformed water inlet
valve bellows
• Unclosed due to
impurities in
drainage housing
38
PCB Error
Repair Method
Turn on the faucet
Exchange the part
if it is open
Remove impurities and
"cleanse" the filter
Exchange the inlet valve
Reconnect the
connector
Exchange the inlet
valve
Exchange the
harness
Exchange the
water level sensor
Exchange the
defective part
Exchange the inlet valve
Exchange the inlet
valve
Housing on pin Insert the housing
connection not on pin connection
properly inserted completely
Defective inlet Exchange the PCB
circuit
Short circuit in Exchange the PCB
water relay
Defective inlet Exchange the inlet
valve valve
• Impurities in • Remove
valve housing impurities
• Impurities
• Remove
• Error in returns
impurities
of synchronous
• Exchange the
motor
synchronous motor
Mode
"IE"
"IE"
"IE"
"IE"
"IE"
"IE"
"IE"
"E2"
"E2"
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