This is fault code 50. The Motor Controller has measured a voltage from the valve diagnostic circuit that indicates that the hot valve is faulty. The control board checks the inlet valve circuit all the time. It is telling you it sees something wrong on the hot inlet. It could be that the wiring plug to the hot valve is not connected properly, the inlet valve may be faulty and needs replacing or the control board has a fault and will have to be replaced. It will be cheaper to repair than buy a new machine but depends on the condition of the rest of the machine. Phone around for some over the phone estimates to repair.
Lincoln Appliance NZ, August 2012