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Need a manual for guardian 21230L garage door opener?

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Posted on Jan 04, 2011

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1 Answer

My Guardian 21230l Door opener light is no working? I have replaced the bulb twice in 7 years, but now nothing happens. Any ideas?

Trace circuit, back through the wiring, through the switch, and back to the source, using a meter.

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Guardian garage door problem

check for loose or out of adjustment limit switches for the door travel

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I have a problem with a guardian 21230L garage door opener when you push the button the light flashes but no door movement happens can you help cheers

if your saying that the light on door opener housing is flashing then stopping after a few moments , this is a sign of a fault in door safety's , either the door has to much friction now to move or beam detectors have sensed a problem

Nov 13, 2015 | Building Materials

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How do I remove the lens cover for the light on a Guardian garage door opener 21230L?

Not sure about the Guardian, but it should be in the installation manual which can be downloaded, if you don't have the original. On my "Linear" brand, you just have to press the plastic cover at the right place and it releases.

Aug 04, 2015 | Building Materials

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Guardian garage door open will not close, it beeps 12 times

optic sensor issue most likely. check alignment, check wire for breaks, check staples shorting out wires. it you hold the wired wall button and the door closes, then it is a sensor issue. you can also just jump the terminals where the wires connect on the opener motor and see if it works normally, if so, again the sensors are the issue.

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Guardian sectional door 21230L opens & closes by itself without any one touching the remotes.

check all the wiring and be sure it is not pierced by a nail or staple

Oct 15, 2014 | Building Materials

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Guardian 21230l

Sounds like you need a replacement remote.

Feb 11, 2014 | Garden

5 Answers

I have a problem with a guardian 21230L garage door opener when you push the button the light flashes but no door movement happens can you help cheers Tom

I have the same problem. Door does not open or close when press the push button and/or transmitter. The light flashes 5 times. Manually open or close the door is ok. On the manual troubleshoot, it says it's either the opener is overheated or it's on vocation mode. I don't know how to switch of vocation mode. Is it possible the thermal sensor is broken?
Can someone help?

Jan 28, 2011 | liftmaster Electrical Supplies

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