Erasing Channels

To erase all three programmed channels, hold down the two outside buttons until the red light begins to flash rapidly, then release buttons. Individual channels cannot be erased but can be reprogrammed using the programming procedure in this section.
^ Note to Canadian users: During programming, the customers hand-held transmitter may automatically stop programming after 1 or 2 seconds which may not be long enough to program the UGDO transmitter. If you are programming with one of these transmitters, the light on the UGDO transmitter may prompt you to reactivate the hand-held transmitter with a series of double flashes. After the hand-held transmitter is reactivated, the light on the UGDO transmitter will flash rapidly, indicating that it has been successfully programmed. If the light returns to a slow flash, reactivate the hand-held transmitter until the light flashes rapidly.
^ If the light does not perform as indicated, or the opener does not function properly, refer to Garage Door Opener for electrical schematics.