Hi my Zanussi de6850, has started to my a whinning noise when working, it still works but the noise from the motor is getting worse, any ideas what is causing it.

tight a little the drive belt, and test and replace the belt if necessary.
2) test the bearing motor and repair.
3) LUBE the deck belt and rollers bearing and replace if necessary maybe you have a WORN deck belt with noise!
God bless you

lift off spray arm and remove motor rotor and remove any debri this can cause a noisey motor.

remove RHS panel and you will see it bottom right. looks like a round cylinder with wires going into it.

if not heating worth looking at main board as wel for a broken solder joint on heater relay. bit of solder will sort this

Hi,
Check your heating element..
A bad heating element causes many problems in dishwashers…

Dishwasher Problems The Heating Element not Working

Dishwasher Maintenance

heatman101

Asker's Testimonial " explanation very clear. will give it a go and see how simple it was. thanks Ronnie " - ronnieshomes

Hi,
Check your heating element..

Dishwasher Problems The Heating Element not Working
http://www.fixya.com/support/r4589033-dishwasher_problems_heating_element_not

Dishwasher Maintenance
http://www.fixya.com/support/r4319937-dishwasher_maintenance

heatman101

Hi,
Check your heating element..

Dishwasher Problems The Heating Element not Working
http://www.fixya.com/support/r4589033-dishwasher_problems_heating_element_not

Dishwasher Maintenance
http://www.fixya.com/support/r4319937-dishwasher_maintenance

heatman101

Hi,

it is the float switch in the base of the unit, which registers a water leak. you are probably using too much detergent and it is overflowing into the base.

Make sure you unplug before you start. I had the same problem with a DE6850. The heater was ok. Metered at 25.ohms. Apparently, the relay on the control board mounted in the front door behind the switches is a common fault. Remove the screws around the top part of the door and you will be able to get at the control module. Resolder the connection. Zanussi reliability has been lost. Noel P

is your water heater set on 120 degres

I have the same problem if you take off the tray below the front door and set a small blow heater in there it will dry the out the anti flood switch. It usally takes about 25 mins for the machine to start working again.