Daewoo KUD-UD121DCR, Руководство по обслуживанию

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Symptoms of
Breakdown
Water
supply not
carried out
Water
supply not
carried out
Continuous
water supply
Inspection Result
- Cold/ hot water hose switched
-Large amount of rust, sand and
dust, etc.
-5.3kW or higher
-Connector loosened/ not
inserted
-Electric wire short
-Sound and defect in water
supply due to foreign
substances in bellows
-E9
Electric wire easily loosened
when tugged
PCB water supply circuit open,
damaged (water supply relay
operation not carried out)
PCB water supply circuit or
relay short (continuous
conduction to valve)
Water supply bellows
blocked/ deformed
-Not closed due to foreign
substances inside drainage
housing
-Wire caught by foreign
substances outside drive
motor
-Forced restoration not possible
Problem Identified
-Defect in cold/ hot water
hose assembly
-Defect in cleaning of water
supply filter (blocked)
-Coil short
-Connection defect
-Electric wire short
-Structural defect in water
supply valve
-Loosening of pressure S/W
terminal or electric wire
short
-Defect in pressure S/W
Pin connector housing not
inserted
Defect in water supply circuit
Water supply relay short
Defect in water supply valve
-Foreign substances in valve
housing
-Foreign substances
-Defect in drive motor
restoration
Repair Method
-Assemble cold/ hot
water hose correctly.
-Clean water supply filter.
-Replace water supply
valve.
-Try reconnection or
remove elements of
connection defect.
-Try reconnection or
remove elements of
connection defect.
-Replace water supply
valve.
-Connect terminal of
pressure S/W.
-Connect terminal of
PCB.
-Replace pressure S/W.
Completely insert
connector housing.
Replace PCB.
Replace PCB.
Replace water supply
valve.
-Remove foreign
substances.
-Remove foreign
substance.
-Replace drive motor.
Inspection
Spot
Water
supply valve
Pressure
Switch
PCB
PCB
Water
supply valve
Drainage
drive motor
(valve
housing)
Inspection Method
1) Suspension of water supply
2) Water tap locked
3) Cold-hot water hose incorrectly
connected
4) If no defect is found, dismantle water
supply hose and check water supply
valve filter.
1) Measure coil resistance in water
supply valve.
2) Remove top cover and visually
check for separation of water supply
valve terminal connector and wiring
short/ connection status.
3) In case water valve operation sound
is heard, but water supply is not
carried out, check for blocking of
water supply valve or restraint on
plunger.
1) Check for ‘E9’ in display window.
1. Check PCB pin connector insertion
status.
2. Power is supplied to water supply
valve terminal, but water supply is
not administered.
1. Immediate supply when power is
turned on
1. Check if water supply is continuously
carried out even if power is not on.
1. Check for normal operation of water
supply valve/ water supply status.
2. Check if water is drained through
drainage hose.
3. Check for foreign substances inside
valve housing.
4. Check for foreign substances in drive
motor wire.
5. Forcefully restore SUS wire.