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Your heater needs to be reset, here is the procedure1 Manual reset is accomplished by first, turning off power to the water heater for 10seconds.2 Restore the power to the water heater.3 Within 10 seconds of restoring power, press the two temperature adjust buttonssimultaneously until the left (green) “Vacation” LED begins to blink (approx. 5 seconddelay). Once the Vacation LED begins to blink, release both buttons.4 Again, within 10 seconds, press both temperature adjust buttons simultaneously until theVacation LED is on steady (approx. 5 second delay).5 Release the two buttons, the microcomputer will clear the FVS lock-out and normaloperation will then be restored.