how can I fix my Fisher & Paykel gwl15 washer?

It won't spin until all the water is out. There is still some water under the spin bowl you can't see or get at. The bumping is the machine doing it's normal checks to see if all water has gone. You probably have a blockage in the drain pump. Remove the pump and clear any blockage. Put pump back and test by putting it on spin. Be aware that when you remove the pump, the last of the water will come out on to the floor. Make sure power is off and you have some towels ready.

Lincoln Appliance NZ
August 2014