My genie H4000A garage door opener will not operate from the wall switch or remotes. I have power to the unit. The door is in the open position and when I manually disconnect it and pull it away from the close limit switch the opener turns on.

Ate these the programble remotes or the original?

disconnect motor, check the door is operating smooth and correct. check springs. check downward pressure setting

there should be a red or white button on the back of the opener. hit that button then press and hold button on remote. you should hear two clicks.

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If the opener doesn't work with the button on the wall the opener is defective, either the receiver board or the motor drive circuit or the motor itself.

I bought a new keypad and 2 VISOR remote (30498). As to programming garage door opener, I did like here:
programming garage door opener
- it tooks me 20 minutes and works great

The garage door will only go down by holding the button on the wall switch

If you have only one remote it is impossible to determine if it is that or the receiver that is bad. The wall unit doesn't use the receiver so that doesn't tell you anything. No good answer.

You will need to get a surge protector on this unit first of all. You will have to replace the logic board and maybe the wall button or sensors depending on how bad the surge was. Any time the power goes out the logic board can be affected by it. Thanks BB

I find Clicker products confusing. Might want to buy whole new replacement readio control set. how old is operator?

Anytime a door opens and/or closes randomly or doesn’t work consistently I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door or interfere with the remote signal.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.
Or a remote in someone’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation / interference stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

HOPE THIS HELPS