F/02 error code potential causes
Check the drain hose and make sure it is not plugged or kinked
Check the electrical connections at the pump and make sure the pump is running.
Check the drain pump filter for foreign objects
If the above does not correct the problem replace the pump
I would start by taking the lower front panel off. There are two bolts, one on each side of the panel, remove those. Once you have the panel removed, you will see a white plastic unit, that is your pump assembly. You should also see a round plug with a plastic tab across the front. That is your coin trap. Open the cap by twisting it counterclockwise and remove it. It may just be clogged.
You can download the service manual from here and there is further information on here
and here is here is my answer from a similar question regarding the door lock:"
Door Lock Mechanism broken or removed from the Door
Check Door Lock/Switch Assembly
Check the wire harness connections to the Door Lock/Switch Assembly and Central Control Unit (CCU)
Door Lock/Switch Assembly Failure
http://www.applianceblog.com/mainforums/... and http://www.thathomesite.com/forums/load/... have more on this.
Here is a way to gain access to your washer if the door is locked shut.
1. Remove the lower panel under the door by loosening the three screws under the bottom edge on the front of the washer. HINT: If you prop up the front feet of the washer with some small blocks of wood, this will make access to the screws much easier.
2. With the screws removed, the lower panel should drop down then come off. If the panel sticks, a light tap on either side will knock it loose.
3. Reach your hand up inside the washer behind the front casing on the right-hand side. This is where the door latch assembly is located.
4. At the bottom of the door latch assembly is a small pull tab. This is the manual release for the door. Pull the tab straight down and the door will come open.
Sometimes these doors will not unlock for whatever reason. If there are no error codes being generated, this could have just been a momentary glitch. If you see "Fdl" or "Fdu" error codes, these are usually indications of a failed door latch assembly and will require replacement. You can also try to reset the CCU by unplugging the washer for AT LEAST 30 minutes.
Hope this helps, good luck.