I start the normal, or anyother, cycle and do not get power to the main water valve. 20+ seconds later, the circulation pump comes on with no water to circulate. Is there a relay or fuse in this circuit? Where do I look?
Re: no power to the main water valve during cycle.
I'm no expert, but I recently had a fill valve replaced. There is a float switch at the bottom of most dishwashers. Its purpose is to cut power to the normally-closed electrically-opened fill valve in the event of an overfill. If the float switch "thinks" there is an over-fill situation, it will cut power to valve, closing it. I would start with replacing the float switch or checking to ensure that it is not stuck in the "up" position due to debris.
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cleaning problems are caused by the dishwasher not getting enough wash
water, so the water-inlet valve is often to blame. This valve is
usually at the bottom left or right of the dishwasher, behind the lower
access panel. It's the device with the main water line from the house,
a rubber tube to the dishwasher, and two wires attached to it. When
a water-inlet valve is defective, you may hear the sound that's usually
referred to as "water hammer." If the water-inlet valve is defective,
you need to completely replace it. Dishwasher Water Inlet Valve Replacement
Be sure to read and understand any instructions that come with the new water inlet valve.
That is a discharging problem. What you can try initially is turn it off and unplug the power cable for about 2-3 hours to release any static charges. Then plug it back in. If that doesn't work, there's an internal electronics component that needs to be check. Discharging is a capacitor problem. There might a burned or bulged capacitor that needs to be replaced.
A built-in dishwasher should be connected to a hot water line under your sink, usually on the same valve as the sink. It is normal to have the water turned on all the time as there is an electrically operated valve that will supply water into the dishwasher as needed during the wash and rinse cycles. If your model includes a "sani-heat" or other setting that ensures the water is hot enough to do a good job, then you may observe a period of no audible activity during which the water that was drawn into the dishwasher is heated with the electric element below the basket or drawer where your dishes are arranged. With the water turned on, run a full cycle using the pot-clean or heavy duty wash as the starting point. If you have only push-buttons then choose the one that sounds like a full cycle. Anytime during the operation you may open the door latch to see what is going on, then close it again to resume the cycle. If you are not getting water into the dishwasher then you should check the valve and the tubing... you can remove the tubing and try filling a small bucket if you are handy with plumbing and not prone to damaging small compression nuts on plastic or brass valve ports. If water is flowing check for power at the outlet -- where I live they all use a 3-prong plug under the sink to a GFCI outlet. If your unit is hardwired then check power carefully or with the help of a qualified repairman.
This is what I found in the manual...and on a couple of other sites....
Machine won't fill or won't fill high enough(LX18, LX30 display shows "E0," "E2," "E3," or "E4")
1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures. 2.Make sure probes are clean. 3.No water pressure — main water supply valves may not be working. 4.Drain
valve open - turn machine off to drain machine, then on. Repeat twice
(this assists in clearing any drain valve obstructions). Wait for
machine to reach READY mode and press WASH. Slowly open door several
seconds later and note water level. Close door; 30 seconds later, open
door slowly and check that water level is the same as it was. If not,
repeat the OFF-ON procedure. 5. Delime machine.
If this doesn't help let me know and I will get to the bottom of it....good luck and thanks for rating my effort...The Fang.
Check for hose kinks or food plugging drain hose. Start at the drain port exit. Check the check valve and drain hose for debris. Check pump motor for reversing during the pump out make sure the dishwasher is pausing between the wash and drain cycles letting the pump/motor reverse for the drain cycle. Check pump motor assembly for a drain solenoid, during the pump out make sure the solenoid makes that distinctive "clunk" noise If you have recently installed a new garbage disposal, check knock-out plug at connection.
Check pump impeller for damage. Check that the water inlet valve isn't seeping fresh water into the dishwasher when off.
If your dishwasher does not run or stops during a cycle Is the Start/Resume indicator flashing? Opening the door or interrupting the power stopped the cycle. Close the door and press START/RESUME. Does the Start/Resume indicator flash 3 times when you press START/RESUME? The dishwasher is waiting for you to open the door after the last cycle. Open and close the door, then press START/RESUME. Is the door closed tightly and latched? (NOTE: On models with a dual-digit display, the control displays “- -” during a cycle if it believes the door is not latched.) Is the right cycle selected? Refer to the “Cycle Selection Charts.” Is there power to the dishwasher? Has a household fuse blown, or has a circuit breaker tripped? Has the motor stopped due to an overload? The motor automatically resets itself within a few minutes. If it does not restart, call for service. Is the water shutoff valve (if installed) turned on? It is normal for certain cycles to repeatedly pause for several seconds during the main wash. If the dishwasher will not fill Check the overfill protection float that is able to move up and down freely? Press down to release. Let me know if any of these procedures helped you?
the water does not get into the dishwasher open the dishwasher 3-4
times during cycle, you should see some water at least once, if not - check
water valve, water level float and water pressure.
the pump is
clogged - there is water, the motor will run but no water is circulated.
Check pump filters, check chopper and impeller.
motor in main pump is not working - could be caused by something
stuck on the impeller or chopper or could be a problem with the motor
itself or control board. Check if line voltage is coming to the motor
during wash/rinse cycle.