Panasonic na-f70b2 washing machine cannot drain water

SOURCE: panasonic washing machine model no

it is due to the magnet attached at the tip of the lid. the magnet acts as a sensor that give info whether the lid is closed or open. i got the same problem too but luckily the i found the magnet nearby the washing machine.

SOURCE: water doesnt stop fillinG in

Fyi. All new washing maching already tested on their functionality and features but not test run with water intake and drain function. I would like to share My experience last time with this model. The water outlet valve will release by motor when you set to drain mode.it suppose manage to retract back by spring when drain process finish or afte small you change to wash mode.
Take a look on the spring movement.normally it not properly hold valve switch hence the retracted spring not block the valve to stop water drain. Just rectify the alignment of the valve swich which directly connected to the retractable spring.

SOURCE: Panasonic model Na-f70b2 error. U12 and stop motor

Try this: it should give answers to the "self-diagnostics".
http://panasonic.ae/en/manuals/NA-F70B2-65B2.pdf