Hello there and welcome to fixya
Please check the following carefully
Drain line/air gap
A
clog in the drain line or air gap (if there is one) is the usual reason
that a dishwasher won't drain. Often the problem is at the point where
the drain line attaches to the garbage disposer or household drain line.
If you remove this line, you can clear any debris from the hose or hose
connection. Be sure to reattach the hose before starting the dishwasher
again.
Pump
Your
dishwasher pump ejects the water. The pump is usually mounted directly
to the motor, then attached to the bottom of the dishwasher. You can
reach the pump from inside the dishwasher, but first you need to remove
the lower rack, the spray arm, and the spray arm support.
Look
for an impeller--a round plastic fan blade-type of device that spins
around. This is the wash impeller, which forces the water through the
spray arm. Beneath the wash impeller is the drain impeller, which is
similar in size and shape to the wash impeller. The drain impeller
pushes the water toward the drain port. These components make up the
pump. If any of the pump components are defective, you need to replace
them.
Drain valve and/or solenoid
Many
dishwashers use a drain valve with an electric solenoid. When
electricity flows to the solenoid, the valve opens and diverts the water
to the drain. Sometimes the solenoid, or the diverting lever, sticks
and prevents the dishwasher from draining or filling properly. Try to
free up the solenoid to lubricate the lever. Otherwise, you may have to
replace the solenoid or pump assembly. With these systems, the motor
always rotates in one direction. When it's energized, the drain valve
diverts the water.
Other
dishwashers simply reverse the direction of the motor to drain the
dishwasher. These units don't have a drain valve. Instead, there's a
drain hose connected directly to the pump housing.
Belt
One brand of dishwasher uses a belt to drive the pump. If this belt is broken or has fallen off, replace it.
Motor
If
the motor isn't turning or working, the unit won't drain. First check
to be sure you have power to the dishwasher. If not, see the section "It
doesn't work at all." If the motor hums but doesn't turn, it may need
to be replaced.
Some
dishwashers are susceptible to getting stuck if you don't run them
regularly. If you haven't run the dishwasher for more than a week, you
may need to manually spin the motor to free it up. If the motor is
defective, you need to replace it. Dishwasher motors can't be serviced.
Timer
Part
of what the timer does is control the motor and drain valve. If the
timer doesn't work properly, the water may not drain and you need to
replace the timer. This problem is uncommon.
Hi
Dishwasher not draining issue usually occurs due to kinked drain pipe, clogged drain filter or drain pump. Check the drain hose for any visible clogging, remove if present. If no visible lint is present then remove then turn off the dishwasher and remove the drain hose and check for any visible clogging. If still not visible then the drain filter or drain pump is clogged and you'll need to clean the drain filter and drain pump.
Please note that dishwashers don't drain out the complete water such that heating element doesn
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