Ariston A1436 The machine begins to fill then empties and fails

Make sure that the top of the waste water pipe is at the correct height for the machine, typically around 30-34 inches from the floor (see your installation instructions). If it is any lower then it will start a siphoning action as soon as the water reaches the same level in the machine and never actually fill up and hence the cycle will not start. If the machine detects that insufficient water has entered the machine within a given time, typically 8 minutes, then if flags an error to the on board controller. If the error persists after the waste pipe height is corrected then check out the pressure switch for correct operation as if this is not triggered then the cycle will also not start or will halt almost immediately.