Maintenance for Winter in Phoenix, AZ | Garage Door Limit Adjustments

It is that time of year in Phoenix, AZ. The reason we all live here – the wonderful winters. As we begin to experience a change in weather, I tell people to do a quick check-up on their garage doors.

diy garage door maintenance


The weight down force of the garage door opener can crush you, a kid or pet.

The garage door is a common entryway into the home, sometimes more readily used than the front door. Going up and down about four times a day, it requires some regular maintenance. Just a little TLC and testing of key components can go a long way to extending the life of your garage door and keeping your family safe.

Here is what you can do, as we experience a drastic change in weather in Phoenix, AZ.



  1. garage door maintenance winter adjustment Make sure that the sensor eyes are working properly.


All you will need to do is place an object between the two sensors eyes.  This will interrupt the beam and break the circuit that tells the garage door opener it is safe to open and close the garage door. Once you have placed something between these two sensors the garage door should reverse or refuse to close when you press the button to close the garage door.


2. Make sure the reverse system is working.

This system is designed to raise the door as its closing in the case that something is trapped below the garage door. To test this system place an object on the floor below the path of the sensor eyes; as the garage door closes and encounters the object on the floor, the garage door should automatically reverse. If the garage door does not reverse contact me or your local garage door repair company with any questions. Many times I can troubleshoot the problem over the phone.

3. Make sure the down force limit is set properly.

The most important element to inspect, and adjust if needed, is the down force on the garage door opener. This is what controls the level of force that your garage door opener will administer to close the door; so if you’re garage door where to fail, and the force limit is set to high, the garage door would continue to close crushing whatever could not withstand the force. This is why I always tell people to check the garage door opener down force setting – especially during the change in weather. When it’s colder outside your garage door opener has to work harder to open and close the garage.

Here’s how you can ensure that the down force limits of your garage door opener are set properly. When the garage door is open push the garage door button to have the door close. Now, as its closing, with your hand outsreatched and stiff, attempt to stop the garage door from closing. The garage door should automatically reverse with a limited amount resistance from your hand. Warning: If the garage door does not reverse, remove your hand or anything in the path of the garage door, immediately.test force limit If your garage door is not reversing,  you will need to adjust the force limits of the garage door opener.

If you do not feel comfortable adjusting the down limits on your own feel free to give me a call. If you live outside of the Phoenix metro area, contact a local garage door repair company.



How to Adjust the Force Limits of Your Garage Door Opener

The garage door force limits apply to both the opening and closing operations of the garage door. The down limit is the resistance limit at which the garage door opener will stop forcing the garage door closed. The up limit is the limit at which the garage door opener will stop forcing the garage open when resistance is present.  In this DIY garage door outline, I will be discussing the down limits.

Warning from Liftmaster regarding adjusting the limits yourself:

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

  • Too much force on the garage door will interfere with proper operation of the safety reversal system.
  • NEVER use force adjustments to compensate for a binding or sticking garage door.
  • After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with 1-1/2″ (3.8 cm) high object (or 2×4 laid flat) on floor.

To adjust the down force limits you will need access to the garage door opener. From there you will want to decrease the down/close setting by turning the control counterclockwise.

adjusting down limits garage door opener Be sure to only make small adjustments and then test the effects of your adjustment. You will test the new down limit setting the same way you tested the down limit to begin with. Continue to make adjustments to the down limit settings until the door reverses normally when a limited amount of resistance is applied to the bottom of the garage door as its closing.

Note, it is important to make sure to run the opener through a full open and close cycle before adjusting or testing the new down limit adjustment.

If, for some reason, you find that the garage door is now beginning to reverse when the garage door is closing, it usually means you have turned the down limit too far down. When this happens you will notice the garage door reverses when closing and you’re opener lights will not flash. So at this time, you will reverse the process and turn the down limit adjuster clockwise.

When making adjustments and repeatedly opening and closing the garage door, you may find that the garage door opener will stop working. This usually means that you have over-heated the garage door opener. Wait about 15 minutes and try again. A final tip, do not increase the force limit beyond the minimum amount required to close the door.

Ron Cruse Owner of A&R Garage DoorAs always, I hope this post has been helpful. Safety first! If you have any questions contact me directly.

Ronald Cruse
Glendale, AZ
Servicing the Entire
Metro Phoenix Area

You can also submit any questions via the contact form on this page, I normally answer any questions within 8 hours. If you live in the metro Phoenix area I come to your home and troubleshoot your garage door opener or garage door free of charge. Please print coupon or mention this post.