Neighborhood Garage Door Repair of Fort Worth is here to help with all of your garage door needs. We also understand there are some repairs you can make yourself without having to make a service call. Please note, not all jobs can be done by yourself and you would need to call an expert to make those repairs. Here, we can explain the steps of how to repair the limit switch.
Understand The Problem With Your Limit Switch
The first thing you should do before you start trying to replace the switch is to clean the switch contacts. If that doesn’t work, then you can proceed with replacing parts. There are usually two small switches of the unit, and they are triggered when small rollers are attached to the chain ride mechanism.
If the switch keeps pulling the door up or down after it gets to the position, you might assume it missed the switch. Before you do anything else, check the switch contact to make sure it isn’t corroded. This is a simple thing to fix.
Preparing the Switch for Testing
There are some safety steps to repairing your limit switch. The first thing you should always do is remove the power. You must make sure there is no power to the garage door to prevent injury. Then, you would identify the components of the switch. You are looking for two switches that make up the limit switch system. Next, you need to check the continuity. Here are some steps on how to do that:
- Carefully use your pliers and remove the two spade terminals, which will expose the contacts on the switch
- Set your multimeter to continuity and connect it to the two terminals. It should show no connection.
- Push the swing button and the meter should show a connection between the probes and then it should open once the switch is released.
- Repeat these steps for both switches.
If this test fails, the switch may have internal problems or be too corroded.
Repairing the Switch
Use pliers to carefully pull the terminal loose from the contacts and make sure you don’t stretch them. Make note of which terminal goes to which contact. Remove the nut that holds the faulty switch to the body of the opener and removes it. If they are both faulty, repeat the process for the other switch. They are identical, so no worries about remembering which one went where.
Next, you will want to clean the terminals and retest for continuity. If this does not work, you will need to open it back up and do a deep clean on the contact switches. Repeat the test, and reinstall the parts. Once you are sure everything is working correctly, reconnect the power to your garage door opener.
Give Us A Call
Here, at Neighborhood Garage Door Repair of Fort Worth, we like to be as helpful as we can. We would like to explain some things you can do on your own but also be here when you need us.