Question about Chamberlain 1/2-HP Whisper Drive Belt Drive Garage Access System

1 Answer

Door starts to open/close only travels 8" then reverses/stops

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 15 Answers

The problem is most likely with the safety "eyes" sensors. Your system does not see them. Rather than opening even without sensing the safety "eyes" sensors like most older system do, this model apparently has a safety feature built in, that without proper communication between the safety "eyes" sensors and the main console, the door will not operate at all. Some people had reported that in a situations like yours, if they the button on the remote pressed, the door will open/close, though this is not recommended.

Posted on Nov 01, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

4 Answers

Door opens itselv after closing


most likely the down stop is set to low, the door hits ground and reverses. so either change the down stop position or increase the down force so it will not reverse upon contact.

Dec 06, 2015 | Building Materials

1 Answer

Why is my garage door suddenly reversing when going down?


Deb, that reversal is a child safety device - if the bottom edge of the door detects contact with any object, it'll immediately reverse so it doesn't kill a child. Or a cat, dog, whatever.

The opener mechanism should have a stop switch that prevents the door from closing hard against the floor - that stop switch needs to be adjusted so that the door will stop JUST before hard contact. That'll take care of it "bouncing" off the floor & reversing. As to it reversing before it touches the floor... examine both guide rails closely to see if there's any obstruction that the door's bottom edge may be contacting to trigger the child protection reversal switch.

Aug 04, 2014 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

When I try to close my garage door --4100 model-- the door travels part way down, then reverses and goes to the up position. I can force it closed by keeping the garage door wall switch continually...


Check your door sensors. Make sure they are pointed at one another and the small light on each one is lit and not flickering. Tweak them a little. If you cannot get both lights to come on you have a bad sensor.

Dec 30, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Craftsman 139.53673SRT garage door opener. When I try to close door with remote or single push on doorbell control, the door reverses after 6-8 inches of travel - and big bulb flashes 10 times. ...


When the main light flashes 10 times and the door reverses it is a door sensor problem. Make sure they are pointed at one another and that the small light on each one is lit and not flickering. Tweak them a bit. If you cannot get both lights to come on you have a bad sensor or wiring.

Aug 28, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener won't close. travels 6-8 in.,


If you cannot get the light on the sensor to come on by tweaking it,making sure it is pointed at the other sensor and your wiring is not broken or shorted then your sensors need to be replaced.

Jan 08, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman - chain drive. now open won't travel more than 1 ft.


Sounds like you have a bad RPM sensor board. This is a small printed circuit board just in front of the motor.

Sep 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door closes and then automatically opens half way


ADJUST THE DOWN LIMIT IT THINKS THERE IS AN OBSTRUCTION AND IS REVERSING LIKE IT SHOULD.

TURN THE LIMIT ABOUT 1/4 TURN AT A TIME.

HOPE THIS HELPS

Mar 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears Craftsman 3/4


Open up the caseand look at the travel assy. Sometimes the limit (up or down) do fall off the assy. Just snap it back on.

Jan 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Opener will not reverse


FIRST YOU NEED TO RESET THE CHAIN .

Unplug power
Release the door from the opener close the door manually. take the chain loose and slide the traveler down to reengage with the trolley. Plug in power, run the unit with chain off untill it completes a clockwise cycle and stops. reconnect the chain and set tension.

Adjust the chain tension.

If it still moves 6-8 inches and flashes 5 times. the problem is in the rpm sensor.

Full diagnostics are in the owners manual - FREE at
http://help.chamberlain.com/help/en-us/InstructionManuals

Oct 06, 2008 | Sears Craftsman LiftMaster Chamberlain...

Not finding what you are looking for?
Chamberlain 1/2-HP Whisper Drive Belt Drive Garage Access System Logo

532 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chamberlain Building Materials Experts

Joseph Hoffmann

Level 3 Expert

1702 Answers

Owen Barnes

Level 3 Expert

867 Answers

OtherBrother

Level 1 Expert

4 Answers

Are you a Chamberlain Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...