Why does my Samsung wobble technology 15kg washing machine not rinse nor spin ?

SOURCE: Zanussi ZWD1680W Front Load All-in-One... Problem:

With the symptoms you describe i would suspect a intermittent heater element fault as you are getting earth leakage current which is tripping the whole supply rather than a current overload which would just trip the socket circuit breaker. Get the heating element checked over first as this is the most likely cause.

SOURCE: model GHW910PWO shuts down during the rinse,spin cycle

First, pressing cancel twice should clear the error code and it should restart when you press start. Then you can press cancel to stop the whole thing This should also unlock it. Unplugging it for a long while may also clear the code and unlock the door, not sure. 
the F-9 says it is an overflow condition and may need to be serviced. The F-11 says there is a serial communication error.This might be the case if the pump is running overtime due to clogging. 
 See  http://appliancejunk.com/forums/index.php?topic=1785.0

To check if the filter is clogged, open the front panel, put a bucket in front of the unit, unseat the rubber feet holding in the white plug,  pull the white plug out so when you unscrew it, any water will run into the bucket, then unscrew it and clean the filter. screw the filter back in, set the white plug back into the unit, being sure to secure it with the rubber feet. 
As for it stopping, you may be filling it too heavy and the motor stopped if it over heated? 

SOURCE: Whirlpool top loading washing machine not finishing cycle

SOUNDS LIKE A PUMP HAS GONE BAD. REPLACE IT. IT WOULDN'T COST TOO MUCH.

SOURCE: machine fills with water, sits for a couple of

Your motor/clutch combo is on the way out. The motor is overheating and turning off. Cools down and restarts.
You need a new motor/clutch combo or a new washer. I do not recommend another GE.

SOURCE: washing Machine does not agitate

This assumes that you have a basic Kenmore / Whirlpool top load, direct drive, neutral drain (it doesn't spin until the pump removes most of the water) machine.

First, see the Sears parts site for your washer:
http://www.searspartsdirect.com/partsdirect/index.action

Enter your model number and you'll see a list of major sub-components with diagrams and parts.

Following is the Whirlpool installation and maintenance PDF on how top load, direct drive washers work with a troubleshooting section.

https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/f7e2147fa98b28cf85257122007475cb/$FILE/L-55.pdf

Following is the Whirlpool parts list for commercial top load, direct drive washers although the consumer washers are basically the same.

The problem seems to point to the Agitate Cams in the transmission that raise and lower the Agitate gear on the main transmission shaft. These are relatively inexpensive to replace.

I'd also check the splines on the main agitator shaft and the two pronged "washer" on top of it.