The problem seems to be with the motor that has gone bad and needs a replacement....usually it comes with a 3 year warranty however, you have to confirm this from Liftmaster
In what way has it gone bad? It is still able to lift the door to the top without making any of the painful noises or smells that I would usually associate with bad motors.
What else have you done...apart from all this ?
Can you see any flashing LEDs ?
No the led only flashes when it's supposed to, i.e. when setting the limits it should flash slowly and a little bit quicker when setting the force. It doesn't give me fault sequences or anything like that. The whole thing seems to work as it should other than it won't accept the up limit.
Ok and there is no sort of hum sound from the motor ?
No, the motor is running as it always has.
Is there a Ice/snow build up near the door ?
No, its been raining here - guessing around 7 to 10 degrees
Usually the Leds flash to give an error code...as the LED is not flashing I believe either the Limit assembly or the Logic board might be bad
If the Limit switch contacts and cams are looking fine then it is the Logic board that seems to have gone bad
does this have limit switches? surely these newer type of units work on current sense and time/counting?
Sorry Kevin, but this is going nowhere. I am not one bit further forward than I was an hour ago. Let's waste no more time on it.