Flow Chart Of Trouble Shooting - Sanyo ASW U1100T Service Manual

12. Flow chart of trouble shooting

TROUBLE
a. Power Source
Any indicators and
beep do not work
when the power
switch is on and
the start button is
pressed
b. Water supply
Water does not
flow when the
power switch is on
and the start
button is pressed
Water is not
supplied.
Flow sheet
Collar
Water Valve
* Note: when removing the flow sheet, reinstate the filter in place correctly.
Water does not
stop
INSPECTION
Is fuse blown ?
No
Does humming noise
come on from Magnetic
Valve.
Check water pressure.
Filter
Does water stop
when the plug is
removed or power
Switch is OFF ?
No
CAUSES
Yes
Deterioration of fuse
Motor is defective
Capacitor is defective
Poor connection of the 14
pin connectors.
P.C.B Complete is
defective
Yes
Something on the filter of
the Magnetic Valve.
Poor connection of the 14
pin connectors.
Magnetic Valve is
defective
Response Switch is
defective
P.C.B Complete is
defective.
Low
High
Something in the Air Trap
Yes
Hose or air leaks from a
part related Response
switch system
Response Switch is
defective.
P.C.B Complete is
defective.
Something on the
diaphragm on the water
valve
Diaphragm is deformed
- 15 -
REMEDY
Replace
Replace
Replace
Repair or replace
Replace
Clean the filter
Repair or replace
Replace
Replace
Replace
*Remove the flow
sheet of the Magnetic
Valve.
Clean the filter on the
Magnetic Valve.
Clean or replace
Replace
Replace
Replace or
disassemble the valve
and clean the
diaphragm
Replace the valve