Samsung frontload washer has error code nd - not draining. Main computer board has been replaced. Technician thinks we need a relay switch. Not sure we even needed the computer board. Please help and advise.
Well I am not sure you needed the board either. This is a complex machine, first cousin to the Maytag MAH8700 and one of the more difficult machines to work on.
About all I can do is link you to a service manual, and see if you can do some testing. The question is, are you really getting no draining, or just the error display? If it is really not draining check the pump.