There is a so called brand new LG WM3431 in my new apt. the hot/cold water tubes are correctly connected, and the power cord too. the machine can be turned on/off, and it works find when changing washing/drying choices. but the problem is, the machine won't start when I press the start/pause bottom. the screen on the right hand top shows "dE". I don't know what is the problem with the machine...
DE stands for "drain error". The first thing the washer always does when started is run the drain pump for 2 minutes. If somthing is jammed in the drain pump (paperclip, bobbypin,) then the motor can't run and you get the error. Also if the drain hose is blocked or the boot from the bottom of the tub to the drain pump assembly you get the same thing. Check the filter basket (behind the door in the lower left of the front).
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First the is a hot and cold water pipe. To those are connected hot and cold water outlet bib valves to which are connected, respectively, hot and cold water hoses going to (or you could say, coming from) their respective connections to the washer. Correct this if I am wrong but, it appears you might be talking about those hose connections to the water spigots but calling them pipes, not hoses. If that is true, you contecture is correct: it is most typically a worn out hose washer or o-ring and replacing that item should correct any dripping. By sure the part is characterized for hot water.
If you have checked that the hot and cold water taps are turned on fully and the hoses are not kinked or squashed at the back, it is worth while checking both the hot and cold water inlet filters. Turn the taps off and remove both hoses at the washer end. Inside each inlet port there is normally a little filter which should just slide out. Clean if necessary and replace each one and the hoses. If after turning the taps back on there is no improvement, the problem is symptomatic of a malfunctioning hot or cold water control valve. Sorry but it needs a service call and a check that it isn't the control PCB ;-0(
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The dryer heater is not working. You will need a technician to diagnose this problem. It is possible that the condensate tube and 2 thermistors are clogged with lint debris and will need to be cleaned out.
Turn off the
water valves which supply the water to washer hoses.Switch the hot and cold water supply hoses
and tighten. Turn the water valves back on and try to run a wash cycle using
cold. If hot water only is entering the wash tub the water supply is ok. If
this is the case you can unplug the washer and turn off the water valves. Remove
the washer back cover and follow the water connection for the hot water. The
water solenoid valve will have two electrical wires connected
to it. Interchange the hot water solenoid wires with the cold water solenoid connection.
Connect the water supply hoses hot to hot and cold to cold then plug the unit then
test the washer on the cold wash. If the problem persists it could be a water
hose restriction or the timer circuit could be defective. If you have hot water
at the normal pressure purchase a new hot water solenoid valve.With the electrical cord unplugged be sure to
restore the correct wire connections on the hot and cold water solenoid. To
replace the hot water solenoid remove the hose clamp and hose to replace the
old valve. Connect the unit to the water and electrical outlet. Turn on the
water and test the unit for leaks being careful not to touch any electrical and
moving parts. If all checks ok and the correct temperature work, unplug the unit
This model of washer has something called an Automatic Temperature Control. This means the washer puts water into the tub at specific tempreatures instead of just 100% cold, or 100% hot. Be sure and check that the hot and cold fill hoses are connected to the proper places on the back of the washer. It's possible that the ATC (mentioned above) is causing the washer to fill slowly on the cold setting.
Are you referring to the water valve assembly? If so, you can purchase a new assembly. Check with a parts distributor. You will need the brand and model number.
Unplug the washer. Turn off the water supply (hot and cold) to the washer and disconnect the hoses at the washer (there is no need to disconnect the hoses at the wall). Make certain that you replace the hoses correctly on the new water valve with corresponding hot and cold hoses coming from the wall. Disconnect the wire harnesses to each temperature (hot and cold) on the water valve. The harnesses should be color-coded. Replace them correctly on the new valve. Turn the water supply back on and plug in the washer. Run a small water level while testing different temperatures (hot, cold and warm). Check for water leaks and proper temperature.