It is supposed to spin in only one direction. The agitate is different and should go both ways. Probably a fault on the control board. Can't think of any other reason for not going both ways.
Lincoln Appliance NZ
November 2011
I can answer this question...
My washing machine washes and spins in one direction only. Why?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix washing machines.