Have a sears garage door that will not close unless you hold the interior button down. I notice a amber LED on the back of the unit next to Red button to sync the remotes that is flashing 4 times. It has a D14 listed next to it. I have an ideal door next to it that operates fine. If I block the sensor on the working door, I notice the Amber light only flashes once. Is there any trouble shooting code indicating what 4 blinks are for? I did notice that the floor sensors one is green light and one is amber. The green one as never been on and always opened and closed fine.

Thanks