I have a 7 year old electrolux edc 5330 clothes dryer. The dryer seems to run normally - there are no weird sounds or error codes. However the clothes dry poorly. I have to run the most efficient drying program on average 3 times to get the job done . Sometimes even after this the clothes feel damp. Any ideas what could be the cause of this?

E64 error code Electrolux dryer! E64 fault code on your home Electrolux clothes dryer. What this code stands for is that you have a shorted heating element. Other Possible fault: Heater thermostat faulty: Wiring faulty; Electronic board faulty.
https://advancedappliancesolutions.com/e64-error-code-electrolux-clothes-dryer/
https://www.youtube.com/watch?v=ErDSsjVywwg

New electronic dryers are smart appliances. Your device is probably equipped with a conductimetric sensor that has a function to measure humidity of laundry and in accordance with that increasing or decreasing the drying time. So, it is normaly that appliance stop if you did not put the wet laundry. In the user manual is described as adjusting the level of conductivity (if featured) depending of the water in your area. The conductivity of the water used to wash the fabrics varies from zone to zone.
The conductimetric sensor is calibrated to a standard value: any major variations in the level of conductivity may affect the final drying result (i.e. the washing may be too dry or too humid).

From user manual:

Adjusting the level of conductivity
Water contains, a variable quantity of limestone and mineral salts of which quantities vary according to geographical locations thus varying its conductivity values.
Relevant variations of the conductivity of the water compared to those prefixed by the factory could slightly influence the residual humidity of the laundry at the end of the cycle.
Your dryer allows you to regulate the sensitivity of the drying sensor based on conductivity values of the water by using the following procedure.

Procedure:
Turn the programme selector dial to switch on the appliance
In selection mode press simultaneously the buttons 3 and 6 until «C0» appears on the digits.

Adjusting the level of conductivity:
Press the button 5 sequentially: the level of conductivity is indicated by the lighting of the horizontal hyphens.


Normally, the appliance is factory-set to the highest level; however, certain models may be configured differently.
Memorizing the new setting:
Simultaneously press down the buttons 3 and 6 until the previous drying cycle time appears again on the display and the buzzer sounds.

Dado

What is the LED DISPLAYING while error is occurring?

its a heating problem but may not be the element could be the main board

Hello Biff

You should the the following.

Level the dryer
Check the drum belt
Check the drum support rollers
Check the idler pulley
Check the glides
Check drum bearings
Check the blower
Check the baffles

Best Regards
Neciforo Llanto

Hello, error50 is a motor problem. the first thing you have to do , is to look at het electronic modul in top-front of machine. There will be al lot of bad solders at the black relais. Greets Stefaan: AEG Electrolux Technician Belgium

Your exhaust vent is blocked causing the steaming affect.
Remove the exhaust vent from the rear of the dryer and clean it thouroughly before replacing. Make sure it is straight as possible with no kinks.

Hello,

Same problem happened with our machine.
Have you figured it out already? ;-)
Laz

Those are front tub supports that keep the tub from scraping.Unless you start hearing a rubbing or scraping sound your dryer is ok.Just keep a ear open for awhile for any scraping sound.If you need help in the future with anything ,Im more than happy to help you.