Re: zanussi ZWD122070W
Hi steve
Error code ED4 relates to either a problem with the dryer circuit board , or the dryer element..
Before you proceed further make sure you remove all power to the machine by unplugging.
You can then remove the top, and you will see the dryer unit that contains the heater mounted jn a metal unit.. You will see the element connections sticking out from the rear of this unit,you need to remove these wires only! Make a note of what colour goes to what connections (easist way is to take a photo withyour mobile phone cam.
Then insulate the wires with tape,and try the machine again… If it works then you need to repalce the heaters..if t doesent it usually points to the dryer PCB or associated wiring..
Martin
Martin