20 Most Recent Chamberlain 3/4-HP Power Drive Chain Drive Garage Access System Questions & Answers


My chamberlain whisper drive, 3/4 hp, motor hums

Something in the drive is jammed preventing the motor from spinning. Correct the problem lest you will burn out the motor if allowed to hum and overheat.
11/24/2013 2:39:56 AM • Chamberlain... • Answered on Nov 24, 2013

There is no light coming in the sensors what

Check the wiring to the sensors and ensure that it is connected properly to the opener, and that there are no breaks or cuts in the wire, and that no staples have shorted the wires. After that, be sure the lenses of the sensors are free of dirt and debris, and they can clearly see each other. If the problem persists, replace your sensors.
9/20/2013 8:02:47 AM • Chamberlain... • Answered on Sep 20, 2013

We just replaced the "trolley" component of the opener, now when we open the garage door it opens about a foot, then stops like its hung on something... it will go back down. If i help it pass the hun

Check your manual and re-program the up/stop and down/stop position. Also make sure the new trolly is in it's proper position.(in the closed position) Hope this helps
10/6/2012 12:37:33 PM • Chamberlain... • Answered on Oct 06, 2012

Motor started having troubles functioning.


Please find your user manual above, for reference..
Most likely you have had a controller or drive failure? either that or a sensor has failed?, one simply must troubleshoot each section to tell. It is impossible to diagnose without actually testing the unit.
You need to see if there is drive to the motor, as it hums i suspect there is? but obviously something is preventing it from working, only a loss of drive or command to do so can cause this. It maybe the Microprocessor not "Telling" the motor to operate F/R. But it also may be a sensor preventing it from working, accordingly check all sensors. Also the motor too, as even though it "hums' it still maybe faulty, perhaps a shorted winding etc, testing the motor with a meter will tell you if it is faulty or not, the motor should have a lowish, resistance reading across the terminals, remove power first, to measure.
If you wish to DIY, then first one must obtain a service manual, I have searched but have been unable to locate one? Using said manual one then must perform the troubleshooting steps to locate and isolate the faulty component, with a view to replacement, and using the same manual glean the parts numbers and purchase the components.
It may indeed be better to call in a professional to at least first only give you a "Quote" as to whats wrong and potential costings? At least then one is appraised of things and one can then "go from there" as to what to do, repair or replace?
8/14/2011 1:42:02 AM • Chamberlain... • Answered on Aug 14, 2011

Ythe door goes up fine but u have to hold the

Normally this means that either your transmitter needs to be reprogrammed or you may have loose wiring. OR the alternative is that one of your sensors could be dirty or misalligned and you might not know it. Check the users manual and your door buttons to see if any wiring is faulty or loose. Most of the time it has to do with sensors. Holding button down is a manual bypass to force the door to go down. Something is telling it to stay up. Check your sensors. They can be easily moved, jarred, or knocked loose by accident.
3/9/2011 10:01:31 PM • Chamberlain... • Answered on Mar 09, 2011

Doorbell switch won't open garage door

If working with remote and/or keypad check wire from opener to doorbell/push button/wall controller. Rami orangedoors.com
5/14/2014 6:38:06 PM • Chamberlain... • Answered on May 14, 2014

The garage door just lost power without any interference

Possible causes include a power outage, a tripped circuit breaker, a defective garage door opener, a problem with the wiring, or a faulty power supply. It is best to diagnose the issue by checking the power supply, circuit breaker, and wiring, and then replacing any faulty components. If the problem persists, it may be necessary to call a professional to diagnose and repair the issue.
3/17/2023 10:49:00 AM • Building... • Answered on Mar 17, 2023

Motor shows a 'P' when pressing remote to open.

This is a South African unit. We are in North America, but this link might work better for you. https://www.google.com/search?q=blue+advance+garage+motor+p+error+code ..
3/15/2023 5:46:53 AM • Building... • Answered on Mar 15, 2023

What is Industrial Epoxy Flooring?

As the term suggests, it refers to epoxy flooring used for industrial or commercial purposes. Epoxy floorings have been gaining popularity recently, not just in residential places but in businesses and big establishments as well. Car showrooms, warehouses, pharmaceuticals, and food and beverage plants are just some of the industries that benefit the most from epoxy floors. Businesses love epoxy floors because they are inexpensive, aesthetically pleasing, and durable. Epoxy helps strengthen and protect your floors from high foot traffic and heavy loads, lengthening their lifespan. It also provides resistance to UV rays, moisture, chemicals, heat, and stains. To top it all off, epoxy beautifies your floor by concealing concrete cracks and providing a smooth, shiny finish. There are various designs to choose from, so your floor always looks unique. Remember that businesses are responsible for people that enter their premises. Epoxy floors have slip-resistant properties, which could help prevent accidents and huge financial liabilities. If you're looking for expert commercial epoxy floor coating, go to https://epoxyfloorsocal.com/epoxy-floor-services/commercial-floor-coating-services/.
3/1/2023 4:01:55 AM • Building... • Answered on Mar 01, 2023

How do I alter the up limit so door can go a little higher on an old Merlin M-430R garage door? Stops below the physical door stops.

To adjust the up limit on an old Merlin M-430R garage door opener so that the door can go a little higher, you will need to follow these steps:
  1. Locate the up limit adjustment screw on the opener motor unit. It is usually labeled "Up" or "Open Limit".
  2. Turn off the power to the garage door opener.
  3. Using a ladder, climb up to the motor unit and locate the adjustment screw. It is usually located on the back or side of the motor unit.
  4. Using a flat-head screwdriver, turn the adjustment screw in the direction that allows the door to go higher. Typically, turning the screw clockwise will increase the up limit and allow the door to go higher.
  5. Turn the power back on and test the door to see if it now opens to the desired height. If not, repeat steps 4 and 5 until you achieve the desired result.
  6. Once the door opens to the desired height, tighten the adjustment screw to secure the new setting.
Note: If adjusting the up limit does not solve the problem of the door stopping below the physical door stops, there may be other issues with the opener that require professional repair or replacement.
2/28/2023 4:53:34 AM • Building... • Answered on Feb 28, 2023

Craftsman 1/2 HP garage door opener model 41a5021-3h. It is constantly making a clicking/rattling sound.

The clicking/rattling sound you are hearing from your Craftsman garage door opener could be caused by a few different issues. Here are some potential causes and solutions:
  1. Worn gears: If the gears in the opener are worn, they may be causing the noise. You can check for this by disconnecting the opener from the door and running it with no load. If the noise is still present, it's likely the gears. You may need to replace them.
  2. Loose hardware: If the noise is more of a rattling sound, it could be caused by loose hardware. Check all of the bolts and screws on the opener to make sure they're tight.
  3. Faulty relay: If the noise seems to be coming from a relay on the motherboard, that component may be faulty. You may need to replace the motherboard or have it repaired.
  4. Electrical issue: It's possible that there's an issue with the wiring or electrical components of the opener that's causing the noise. This is something that may require professional assistance to diagnose and repair.
Overall, it's best to have a professional garage door technician take a look at your opener to diagnose and fix the issue. Garage door openers can be dangerous to work on if you're not experienced, so it's better to be safe than sorry.
2/25/2023 1:23:24 PM • Building... • Answered on Feb 25, 2023

My Garage door wont reverse when it his the up limiter

If the door is not reversing when it hits the up limiter, it could be due to a problem with the safety sensors. Check to make sure that the sensors are aligned and that there is nothing blocking their path. If the sensors are not the issue, you may need to adjust the up limit switch. This switch controls how far up the door goes before it stops. If it is set too high, the door may not reverse when it hits the up limiter. To adjust the up limit switch, locate the adjustment screws on the motor unit and turn them in small increments until the door stops at the proper position and reverses when it hits the up limiter.
2/24/2023 10:05:22 PM • Building... • Answered on Feb 24, 2023

What is the best aluminium panel sheet used for constructing buildings??

The best supplier for aluminium panel sheets is Deltyn. Moreover, they are the best distributors of all aluminium products etc. Read more at: Deltyn Aluminium Composite Panel Manufactures Suppliers ACP Cladding ACP...
2/8/2023 6:36:57 AM • Building... • Answered on Feb 08, 2023

My chamberlain liftmaster garage door only opens when I hold wall button down until the end. the sensors are aligned but there the LED lights are not lit up on either side at all

check sensor wiring for breaks or disconnection. Replace sensors which are available at Home Depot . There could be a few reasons why you have to hold down the wall control button to close your garage door but the easiest one to rule out is misaligned safety sensors. When you hold down the button on the control panel, you are overriding the safety feature and telling the opener no matter what is in the way just close the door. Here are a few things to look for when checking the sensors: 1. Clean the sensor's lens and make sure dust, webs, and other debris is not obstructing the lens view. 2. If there are objects around the sensors that you move in an out of the garage (i.e. shovels in the winter, rakes in the summer) put them elsewhere. You may unknowingly hit the sensors and knock it out of alignment. 3.. Most, if not all, sensors have an indicator light that tells you they are functioning. One is usually green and one is red/orange. If one or both are not lit, adjust the sensors (one or both) until the lights come on. Then tightly fasten the bracket screw to make sure the sensors are secured in place. copy and paste https://support.chamberlaingroup.com/s/article/How-To-Troubleshoot-The-Safety-Reversing-Sensors-When-Both-Leds-Are-Not-Lit
2/6/2023 5:11:06 PM • Building... • Answered on Feb 06, 2023

I have a craftsman 139.30437 and the LED light won't come on with 1 push and I'm not able to get my wall keypad to program

It sounds like there may be an issue with the LED light or the programming of your Craftsman 139.30437 garage door opener. Here are a few steps you can try to fix the problem:
  1. Check the wiring connections: Make sure that the wiring connections to the LED light and the keypad are secure and not corroded.
  2. Check the power supply: Make sure that the power supply to the opener and the keypad is working properly and that the circuit breaker or fuse is not tripped.
  3. Check the manual: Check the manual of the opener, it should have a troubleshooting section, you can try the solution mentioned there.
  4. Check the keypad batteries: Make sure that the batteries in the keypad are fresh and properly installed.
  5. Check the keypad programming: Make sure that the keypad is properly programmed, you can refer to the manual for the programming instructions.
  6. If the problem persists, it's best to contact Craftsman customer service or a professional garage door opener technician for further assistance.
It's important to note that working with electrical appliances can be dangerous, if you're not comfortable working with electrical appliances, it's best to get it serviced by a professional.
1/23/2023 10:37:51 AM • Building... • Answered on Jan 23, 2023

What are Epoxy Countertops?

Epoxy countertops are becoming more popular among do-it-yourselfers. When remodelling their kitchens, living rooms, and bathrooms on a budget, people frequently choose functional countertops and effective substitutes. Although you must be aware of the cons of epoxy countertops before using them, the outcomes are amazing and astounding. Your quest for the top Epoxy Countertops suppliers in India is over right here. At the time of your transaction with us, you were aware of all such points. What are Epoxy Countertops? The refinishing product material used to update outdated flooring, bathrooms, and kitchen counters is epoxy. Epoxy can also be used to seal concrete countertops. All epoxy materials let you to transform various surfaces into something lovely at affordable pricing. Various countertop materials, such as ceramic, formica, wood, laminate, metal, and concrete, can be coated with epoxy. It is difficult to find epoxy slabs for countertops made of laminate, granite, marble, and quartz.
1/16/2023 1:23:00 PM • Building... • Answered on Jan 16, 2023

What color is the learn button on the liftmaster 8500?

The "Learn" button on your garage door opener is located above the antenna wire that hangs from the motor head, it may also be under a light cover. The "Learn" button will be either green, red/orange, purple or yellow.
1/13/2023 9:03:32 PM • Building... • Answered on Jan 13, 2023

1995 Mazda 626 ES V6 overdrive light constantly blinks on dash shifts rough?

The flashing overdrive light on your Mazda 626 could indicate a problem with the transmission. The rough shifting you are experiencing could also be related to a transmission issue. Here are a few things you can try to fix the problem:
  1. Check the transmission fluid level. Low fluid levels can cause shifting issues and may also cause the overdrive light to flash.
  2. Check the transmission filter and replace it if it is dirty. A dirty filter can restrict the flow of transmission fluid, which can cause shifting issues.
  3. Check for any loose or damaged transmission components, such as the transmission linkage or shift cables.
  4. If you have recently had transmission work done, such as a fluid flush or filter change, it is possible that something was not reassembled properly, causing the shifting issues. In this case, you may need to have the transmission inspected by a mechanic to determine the cause of the problem.
If these steps do not fix the problem, it is possible that there is a more serious issue with the transmission that will require the attention of a mechanic or transmission specialist.
1/8/2023 7:54:50 AM • Building... • Answered on Jan 08, 2023

I have a Breville Toaster Oven BOV900 BSS. The door will not close.

It's possible that the door hinges are misaligned or there may be something blocking the door from fully closing. Here are a few things you can try to fix the problem: 1. Check the hinges to make sure they are not bent or damaged in any way. If the hinges are damaged, you may need to replace them. 2. Check the door seal and gasket to make sure they are clean and in good condition. If the seal or gasket is damaged, it may be preventing the door from closing properly. 3. Make sure there is nothing blocking the door from closing, such as a utensil or food item that may have fallen behind the door. 4. If the door still will not close after trying these steps, it is possible that the door latch or catch may be damaged or not functioning properly. In this case, you may need to contact a service center or the manufacturer for further assistance.
1/8/2023 7:52:45 AM • Building... • Answered on Jan 08, 2023
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chamberlain whisper drive 3 4 hp motor

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