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Re: DW does not fill
There are a couple of possibilites. In some cases, the float which determines how much water is in the machine jams. Generally, this float is located in the front on the right side. If you find it, move it up and down to free it up. If there is no float, you may have a diaphragm type sensor. This is a tube located under the tub connecting to a 2 inch or so disc with two wires coming out of it. If you find this, place a short across the two wires (power off when you do this!). If the unit fills, disconnect the short and replace the sensor. Caution: the unit will not know when it is full so stop the experiment immediately!!!
If your unit is brand new, I suggest you get the dealer or manufacturer in to have a look at it.
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Is your DW plumbed into the garbage disposal as many are? Or does it have the drain line running into a pvc opening in the sink drain line? Remove the drain line to see if water gushes out. If no or minimal water leaves your drain line from the DW, then the problem is internal in the DW. Most likely cause is a plugged screen at the inside bottom of your DW, or the pump is blocked. Best way to resolve is to get a wetvac and just suck all the water out of the inside before you remove the DW. Otherwise you will have water splashing out on your floor. If you can see the screen is plugged up after doing so, then pull the screen out and then turn the DW on. If operating normally it will go into the pump out mode first before adding any water. Turn off the water to the DW under the sink first to eliminate any concern about adding additional water into an already filled up DW. Good Luck!
with LG dishwashers: after starting, 1st, DW pumps out any remaining water, 2nd, DW fill fresh water, 3rd, main wash motor starts, which is normally a whirring sound. (If you here grinding or rattling, then you have a problem.)
You don't know how many times I've heard and found the shutoff valve off or partly turned off. Water entering DW is from line pressure not pumping. Items to suspect (again) the water supply valve (would'nt be the first time a new valve is bad). The supply valve (3374621) at the Dw, the float safety switch (normally at front left side,)...remove lower rack, lift float housing up and down. You should hear a click both ways and the housing should be free. Is the Dw fill valve getting control signal from timer. Should be 120v for about 60 sec.
Where does the dishwasher connect to hot water? If it is connected to cold it must be changed. From your description, the water is coming from a long way off and has to warm the pipes as it travels to the dw. The dw should have a heater to bring the water up to temp after filling before it runs, if this heater is not working, the first run will be cold and the next hot because you have drawn enough water through the pipes to bring hot water to the dw.
1. Change where the dw gets hw.
2. Run hw in the sink before allowing the dw to start (if connected to same line).
3. Fix the dw's water heater.
it should drain a bit of water out before it fills when it first starts. if that water doesn't drain out then you may have a drain pump fault. You can test this by dumping a few glasses of water into the machine then starting it up ( you should hear it drain that water out) if that worked... then you have a fill solenoid fault or a line filter fault.You can check power to the fill solenoid or give it a couple of taps when its suppose to be filling to see if its just stuck. the inline filter could be plugged where you hook up the water supply to the machine (clean it or take it right out)
The flood switch is tripped. This is located under the unit. Unplug or flip the breaker to the dishwasher, take off the black kick plate under the door, 2 screws, and you will see the white plastic "pan". The flood switch is located where you can't really see it but it is on the left hand side wall and is made of styrofoam. The best thing to do is to put some rags in the pan, this is not easy because there is little room to put them, and soak-up the water that has filled the pan. Eventually you will get enough water out that the float will deactivate the switch. What you hear "running" when you turn it on is actually the drain pump, it get activated when the flood switch is tripped.
From what you describe, drain water from the top drawer is getting into the bottom drawer or waste water from the disposer is backing up into the bottom drawer.
1. Each drawer has its own drain hose. Each hose should terminate at the drain point with a 'Y' adapter. 2. Inspect the drain point (under the sink where the drain pipes are) to make sure this 'Y' adapter is present. (you should see two drain hoses from the DW). If not present, then the DW drain lines are not installed properly. (Someone took a shortcut and installed the 'Y' adapter behind the DW) 3. If terminated properly, make sure the drain hoses extend upward as they leave the drain point.
It is important the drain lines are connected properly to ensure proper drainage from the DW. Consult the installation manual for complete details.
Many dishwashers will drain at the beginning of any cycle.
If the water does not fill after the pump-out cycle, then the problem is either the fill valve or the float switch. You should be able to hear the float switch click as you raise or lower it. The fill valve usually hums whenever it has power.
If the fill valve has power but doesn't open, (use a voltmeter) replace the fill valve. If there is no power at the float switch, nor at the fill valve after pumping out, then the clock / timer is at fault.