Door wont open

We were staying in a holiday apartment and couldn't get the Balay washer/dryer door open on dryer cycle. Tried all the previous solutions and none worke. my husband turned the power off to apartment at fuse box and the door clicked open after a couple of minutes.

I have a similar problem,
Have to slap the door to get it to start. I’ve changed the interlock but still the same... any suggestions? Could it be the door rather than interlock?

check your door switch, it is possible the machine thinks you have your door open and will not start.

Try the following, may work:
Press the Start/Cancel button together until all the console Led's illuminate

1. Press both Start/Cancel and On/Off buttons together until 'd off' appears
2. Default screen should return. Switch off.
3. Wait for 2 minutes to try the door. If helped click.

Your washing machine door lock are broken :(. Change it with new one and forgot all problems.

The door latch may have broken. You can sometimes open the door from the inside. You will know the door latch is broken if the door handle is floppy. If the door handle is not floppy - then the issue is probably with the door interlock. This is the electronic part that prevents the door from being opened during and after the wash has finished.
Either way - you'll need to get the door open.
To do this, unplug the washing machine from the mains and then move it out from where it is. Tip the washing machine to a 45 degree angle. Don't tip it over 45 degrees as you may break internal parts.
You need two people to do this - one person hold the machine at 45 degrees angle, whilst the other person puts their hand up into the machine - you should be able to feel the door catch mechanism and depending on the model, open the door that way. Sometimes the manufacturer has helpfully put a manual release inside - and sometimes they don't.
If you aren't able to open the door using that method. Get a length of strong string and poke the middle section of the string into the gap between the washer door and the machine body - to the right of the door handle. Use a flat headed screw drive to push the string into the gap, all the way around the door, so that you end up with the two ends of the string on the left hand side of the door. Now have someone put the ends of the string whilst the other person pulls the door handle. If the string is pushed in far enough it will release the door latch and the door will open. It takes a bit of persistence to get it right.
Once you have the door opened you can usually replace either the interlock mechanism or the door latch itself. Parts are easily available online from sites like espares and yourspares.

Could be faulty door interlock switch, make sure childlocks not been selected.

The error message "Err" usually indicates that the wash program and option are not compatible. 40 degrees and 900 rpm Spin should be o.k.. I would try another wash program with no special options and see if the problem goes away.

when any of the buttons are pressed ERR is displayed.

on my machine, the filter door on the bottom of the machine opens,inside there is a screw looking thing, i just give it a turn with a coin and the door pops open ,but this should tell you in your trouble shooting section of your manual, good luck