Beko front loader washing machine WMY1048LB1 beeps when I try to turn the knob and displays: CLOn briefly on the screen. The power is on but I am unable to start a cycle. Anyone know what CLOn means?

SOURCE: washing machine won't start cycle

you dont say if the water lever is ok, asuming is yes the water level switch is the problem,, unplug the machine and open de upper side to access to the water level switch check the thin hose to be conected to the switch and is not broken,, nock the switch with something like a screw driver if not replace the switch..good luck...

SOURCE: Washing Machine stopped through cycle and now will not turn on

Unplug!!! NOW! I drained the water using a common garden hose, fill the hose with water and have some device turning it off like a trigger nozzle on the low end. Detach from the supply and put the supply end in the center of the tub under the softener dispenser. take the trigger nozzle off and watch the water drain without cups and buckets. Then wring out the clothes and put them aside, use the hose trick again for remaining water. Now get under the washer and detach and reattach the brown and white lead input to the rinse cycle motor. She is made in France so be gentle. Plug the machine in and set the machine down and turn it on. Push the >> button until you reach the spin cycle if it starts you have fixed it!! Put the clothes back in open a bottle of wine and try again.

SOURCE: beko WMA 1715s - won't respond

door lock switch could be your problem..

SOURCE: Washing machine won't turn on

For the F&P machine.
Check the circuit board fuse. I had my machine do exactly the same thing. Just wouldn't power up at all, no lights, nothing.
The fuse is on the circuit board a small round red unit, with T1.6A250V written on the top.
Remove the 2 screws securing the control panel. Inside there is a grey plastic box. This houses your circuit board. You will need to have a multi meter and a soldering iron to replace this component.

SOURCE: samsung sw51asp top loader washing machine

I had the same problem and from bit of research dE probably means door error. It turns out to be the reed (magnetic) switch was not functioning properly so wasn't closing the circuit when the door is closed.
DO NOT DO THIS UNLESS YOU HAVE BASIC UNDERSTAND OF ELECTRICITY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Of you may really harm yourself.
To test if your problem is the reed switch then 1. Turn AC power OFF, unplug from wall 2. HAVE YOU TURNED THE POWER OFF? 3. Unscrew two visible screws on the back of the machine near the top 4. Take back lid off by pull up which will expose all the wires at the back 5. Put your head in the drum and look to the right under the edge you will see two wires (may be blue) connecting to a small rectangular grey unit (reed sw) 6. Follow the wires back to the back where all the wires are you will find there is a clip joiner - unplug it. 7. Use a multimeter (if you have one other wise skip to step 8) put the probes across the wires coming from the reed switch and you should find the circuit opens and closes as the washing machine lid is opened and closed. If it does not then pretty sure the reed switch is not working then follow step 8 to short it and test. 8. Another method is just to short the wires by jamming a wire across the connector that goes to the machine and NOT the connector to the reed switch This will bypass the reed switch detection so will always be a closed circuit. But since it still has a lever door open detection system it doesn't really matter.
Try a washing cycle to see if it has fixed the problem.
If you have the means then replace the broken reed switch by buying another one from your local shop.
If your problem with the dE error is not with the reed switch then it may be with the lever system which I have no experience with.

Samsun SW51ASP top loader washing machine dE error