Water Supply - Whirlpool WWA-780 Service Manual

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