If the SERVICE indicator is steadily lit, it is most likely a case of circuit board failure. This is solved by replacing the board or the entire motor base. If the product is under warranty, make a warranty claim at the dealer.
If the SERVICE indicator is flashing, moisture probably reached the circuit board. We recommend that you let it dry out by turning the saltwater system or the motor base of the filter pump with saltwater system over and leaving it on sunlight for 4 hours.