Whirlpool WWA-780, Service Manual

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Feed hose assembly
Cushion
Does water stop
when the plug
is removed or
power switch is
OFF
Filter
WWA-780
b.
Water Supply
Yes
No
Low
High
Note: When removing the flow sheet, reinstate the filter in place correctly.
Yes
No
TROUBLE INSPECTION CAUSES REMEDY
Water does not
flow when the
power switch is
on and start
button is pressed.
INSPECTION
Does humming
noise come on
from water
Valve
Something on the filter of
the water valve or
feed hose assembly.
Clean the filter.
Water valve is defective.
Water level sensor is
defective.
Control circuit board is
defective.
Poor connect of
connectors
Replace.
Replace.
Replace.
Repair or replace.
Water is not
supplied normally.
Check water
pressure.
Remove the flow
sheet of the water
valve.
Replace the water
valve.
Clean the filter on
the water valve or
feed hose assembly.
Replace the water
valve.
Water does not stop
Something in the air trap
hose or air leaks from a
part related water level
sensor system.
Water level sensor is
defective.
Control circuit board is
defective.
Something on the
diaphragm on the water
valve.
Diaphragm is deformed
Clean or replace.
Replace .
Replace.
Replace or
disassemble the
valve and clean
the diaphragm
Replace