Sanyo ASW U1100T, Service Manual

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12. Flow chart of trouble shooting
TROUBLE INSPECTION CAUSES REMEDY
a. Power Source
Is fuse blown ?
Deterioration of fuse Replace
Motor is defective Replace
No
Capacitor is defective Replace
Any indicators and
beep do not work
when the power
switch is on and
the start button is
pressed
Poor connection of the 14
pin connectors.
Repair or replace
P.C.B Complete is
defective
Replace
b. Water supply
Does humming noise
come on from Magnetic
Valve.
Something on the filter of
the Magnetic Valve.
Clean the filter
Water does not
flow when the
power switch is on
and the start
button is pressed
Poor connection of the 14
pin connectors.
Repair or replace
Magnetic Valve is
defective
Replace
Response Switch is
defective
Replace
P.C.B Complete is
defective.
Replace
Water is not
supplied. Check water pressure.
Low *Remove the flow
sheet of the Magnetic
Valve.
High Clean the filter on the
Magnetic Valve.
* Note: when removing the flow sheet, reinstate the filter in place correctly.
Water does not
stop Does water stop
when the plug is
removed or power
Switch is OFF ? Something in the Air Trap
Hose or air leaks from a
part related Response
switch system
Clean or replace
Response Switch is
defective.
Replace
No P.C.B Complete is
defective.
Replace
Something on the
diaphragm on the water
valve Replace or
disassemble the valve
and clean the
diaphragm
Diaphragm is deformed Replace the valve
Yes
Yes
Water Valve
Flow sheet
Collar
Filter
Yes