Genie 2020 chainlift opener door stop switch

best bet call genie, there may no repair parts.

Dear Erik,
Although I do not sell or service garage door openers as a profession, I will be glad to tell you you only need to adjust the door, and is should be fine.
There are adjustments on the motor, to tell when the door is the right distance up and the right distance down, and the chain must be adjusted correctly, and the rollers need lubricating oil, and the slotted tracks need grease.
With all these done, you will be good to go.
Most doors need this service every 3 - 4 years, with normal use.
I cannot tell you specifically how to do this, because each door is different, but you might get really good pictured help on "youtube".
God bless your efforts.

Your remote might have a bad closing button, contacts may be bad on button.

It is probably the lubrication in the rollers. You should lubricate them and make a small adjustment to the torque sensor. When it gets cold the lub gets stiff. The torque sensor will detect this and open the door, a safe position.

Use the emergency release handle to release the door. Run the opener to the open position until it stops. Close the door until it stops. Now re engage the the door.

Sounds like a problem with the safety photocells, to confirm locate the where the safety input is on the opener and bridge out the terminals ( not the supply voltage terminals) if the door then closes the photocells are the problem.

UNPLUG RHE UNIT WAIT ABOUT 5 MIN. AND PLUG IT BACK IN.

THIS RESETS THE SEQUENCER.

SOMETIMES IT WILL SOLVE THE PROBLEM.

HOPE THIS HELPS

Change the sensor and make sure the magnet comes close enough to activate it. Sometimes I have even changed the magnetic ones for real switches too.

Sounds like a skinned wire on your front or rear limit switches is touching metal. Go over your low voltage wiring and test again.

there should be a "travel distance" adjustment screw on the opener.