Jun 17, 2019 - 06:33 AM
The lights should not be flashing and this is an indication that something is wrong. The device does not have surge protection. If you do not have a surge protector or voltage protection, it could have suffered damage from bad voltage. Since you have had this unit for three years, it would not be covered under warranty. If the voltage going into the unit is now good, I would say that the unit has failed. In this case, it would need to be replaced.