Liftmaster 45dcbl5 garage opener panel has a fault code of excessive opening force detected code 42 and will get a excessive closing force detected code 43.
Chamberlain garage door opener error code 4 2.
Like many other commercial models manufactured by chamberlain the t garage door opener boasts a so called maintenance alert system.
Chamberlain t is an industrial duty door operator which may be powered by a variety of motors 1 3 1 2 3 4 or 1 hp.
It seems when closing it wants to speed up at the last bit and slam shut like it can t handle the weight of the door.
Allow the motor to cool for about 15 minutes before restoring power and using the garage door opener.
View and download chamberlain door opener owner s manual online.
Motor unit assembly parts rail assembly parts and installation parts for chamberlain belt drive garage door opener models b500 b500c b503 b503c b510 b510c chamberlain 8100 8100cm 8100m repair parts list and diagrams.
Unplug the garage door opener to reset the logic board.
Chamberlain t garage door opener troubleshooting.
Pull the emergency door release and check the up and down travel of the garage door for binding.
Repair the garage door if it doesn t travel smoothly.