After my battery dies, how can i fix the rear central locking on my 206?

My battery died this morning and to start the car i had to bump start it (2002 peugeot 206 1.6 glx). After i bump started it i had to do the usual things (reset the clock etc) but i also noticed that the rear doors were not opening at all, however appeared to be locking when i pressed the remote central locking button. How can i fix this?