My samsung smart wash b1245S 6kg washes but won't spin, it displays an EU message on digital display, what is wrong ???

That is Error code 9
9. (00001001) Phase 1 to 5 - Size Error
Phase 4 to 5
The Display size switch setting does not match that stored in memory.
Action - Reselect the size of Smartdrive by using the SIZE SETTING MODE. Push and hold
the water temp up button, then press the power button to enter SIZE SETTING MODE. Three
LEDs are used to identify size. The cold water temperature LED identifies 5kg. The low water
level LED identifies 6kg. The hold spin speed LED identifies 7kg. If the product has not been
setup before all 3 LEDs will be on. To set the size for 5kg push the wash temp up button then
the power button. To set the size for 6kg push the water level up button then the power button.
To set the size for 7kg push the spin speed up button then the power button. This locks the size
into memory. To check the size is set, start a cycle.

Your program controller unit is working but it must be ensured that there is output on every cycle to the desired output controls. So the inlet valve must work and the motor must run when the water level is triggered by the level controller. So use a meter to check before we can suspect the controller.

the problem might be the panel or it might be the washer pump that brings water out after wash

Display shows 4E.

Water Supply Error occurs when water level frequency does not show changes more than 100Hz or water is not supplied up to the preset water level after 10 Minutes or more at the time of initial water supply. The error status can be cleared by turning the POWER switch OFF and back ON.

We have a Samsung WF8604NGW front loading dimond 6kg washing machine. We had the 5ud error message. It turned out the filter was clogged with fluff from a new set of bathroom mats my wife washed. To fix: Put the machine on to drain (if poss) - should be 1 minute on our machine however as the machine was so clogged it took around 15 to finish. Also use the draning tube located next to the filter (on our machine) to get rid of as much water as poss. Now remove filter and clear (warning some water will remain in the system) Before spinning any laundry run the rinse cycle (with an empty drum) a couple of times and clear the filter each time. If the filter is still clogged the laundry will spin heavy as the water will still be in the drum leaving you with no very dry laundry and a horrible noise during the spin. Regards Rik.

i would grab a towel and check the pump for grit
and things that dont belong
may not be the actual problem but thats whered id start
have a great day

does not spin

5E - WATER DRAIN ERROR

5E is displayed if the water level frequency detected is 25 KHz or less in the initial phase of the UNB -detecting cycle. The Water Drain error can be cleared by turning POWER SW OFF and back ON.

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The error code HE2= water heater error (The heater element did not getting hot)
Unplug the machine to reset this error.
Try different cycle let see you still getting the same error.

motor brushes are worn and nead to be replaced easy job if you turn washer on to its side remove the 2 screws at the bottom and take off the plastic panel you can see the motor and the brushes are red plastic bits remove them and replace with new ones that should sort out the problem and cost about £25.00 to do .