Is it flashing a code?? Found this on the internet....
# flashes - Problem
1-The Protector System wire open or totally misaligned
2-The Protector System wire shorted or black/white wire reversal
3-Door Control or Multi-Function control Panel wire shorted
4-IR sensor slightly misaligned (dim or flashing sensor LED)
5-Motor overheated/Possible RPM sensor failure -- unplug to reset
6-Motor circuit failure -- replace RX/LX board
Rapid-Chamberlain transmitter with the correct format code being received
(opener not necessarily programmed to respond)
# flashes - Problem
1-The Protector System wire open or totally misaligned
2-The Protector System wire shorted or black/white wire reversal
3-Door Control or Multi-Function control Panel wire shorted
4-IR sensor slightly misaligned (dim or flashing sensor LED)
5-Motor overheated/Possible RPM sensor failure -- unplug to reset
6-Motor circuit failure -- replace RX/LX board
Rapid-Chamberlain transmitter with the correct format code being received
(opener not necessarily programmed to respond)