Yet another central locking thread

The other day my central locking completely failed, so i took the pump out, dismantled and dried it (as there was water in there) and put it back together again.

I then tried the Remote Locking alarm system thing (its a sigma m30 i think...) and that works all locks as per usual but when i try to lock all doors using the key in the drivers side it doesn't do a thing yet it will lock all doors from the passenger side, but not unlock them...then i have to unlock using the drivers side...

so to summarise

Remote locking: Works as per usual

Drivers Door (key): Will not lock, but will unlock

Passenger Door (key) Will lock but will not unlock

What the hecks going on here?