"This unit has failed three times so far. First event two weeks after being installed it failed. We had to remove the fuse to stop the machine from operating. We periodically pushed the fuse in to see if it would stop operating but to no avail. We arranged for an engineer then it started to work again and drained the waste away. Whilst the unit was turned off, the waste came up into the bath. Surely there should be a one way valve to prevent this from happening! It has not been a positive experience, the only reason we thought of putting a bathroom in was because of this unit. Now we think we have wasted our money."