These replacement transformers fit the available sizes of Savio UVinex™ ultraviolet clarifiers.
Unplug unit from power source (internal reset takes 5-10 minutes to reset)
While unplugged, disassemble and check cord connection from bulb to plug
Reassemble and plug back into outlet
A green indicator light should mean that your unit is working. A red indicator light may indicate a bad bulb or damage (cracks, condensation, etc). No light on transformer may mean that the transformer itself is damaged.