This machine open began after water injection, the power supply when the water reaches the normal water level last in sluices are still not action, more than the water. Due to the inlet valve can be executed concurrently water absorption action, shows that inlet valve is normal, failure in silicon controlled more VS4 or triode V4. V4 during water injection test base of 1 v, normal, remove the V4 measuring its positive and negative resistance to also did not see the damage; Measuring SCR VS4, breakdown short circuit has been found. After the replacement VS4 troubleshooting.MYVservice manual download site