Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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How do i conect the low volt wire ( the safty eye and the button wire)?

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The terminals on the rear of the motor unit are both numbered and color coded. The white wire with the red stripe from the wall control goes to terminal 1. The solid white wire goes to terminal 2. The 2 white wires with the black stripe from the sensors go to terminal 3 and the 2 solid white wires go to terminal 2. You should end up with 1 wire on terminal 1, 3 wires on terminal 2 and 2 wires on terminal 3.

Posted on Sep 23, 2009

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Posted on Jan 02, 2017

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H ow to replace timer with phot0 cell


Malibu ML300 has 120 volt input and 12 volt AC output
They make a photo eye for the timer... wiring is changed a bit... will work on ML300 if timer has A-B-C wiring terminals
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html#wire

You can use a 120 -> 12 volt ac transformer that is rated for 300 watts... and connect in-line photoeye on the 120 volt side.
http://waterheatertimer.org/How-to-install-and-troubleshoot-photo-eye.html
http://waterheatertimer.org/Reverse-photo-eye-so-it-turns-on-at-daytime.html

Gene
Water Heater Timers Save Money

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1 Answer

Landscape lighting transformer hums only when controlled thru photo-cell, and not when powered directly.


1) Copy following link for Intermatic/Malibu power pack photo-eye instructions, general troubleshoot, manuals, replacement trippers, and tips to prolong life of power pack:
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

2) Brand and model of transformer and photo eye are unknown.
Wiring changes are unknown.
Volt rating of photo eye is unknown.
Wiring of photo eye is unknown.

3) Add a comment including details, and attach photo, after reading information on link above, for live response Jan 2013

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1 Answer

My pool heayer will not light


check wiring they come for 240 volts if connected 120 volts some wiring to be changed or conversion board to be flipped to 120 volts some have you change the wire on the fenwal to 120 volts

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1 Answer

I have an H250 NG and when I light the pilot it goes out when I release the pilot button on the gas valve?


The first thing That comes to mind is a bad pilot generator or thermopile. This makes a small half volt charge that energizes the magnets that open the two stages in the gas valve. Next would be a bad gas valve itself. You will need a milivolt meter to check both of these. Lastley is the safty circut. This is the string of switches that can shut the heater down if problems exist. Their are two sets of wires connected to the gas valve. One set goes down to the pilot, this is for the pilot generator. The other set is the safty circut. If you remove these wires and the pilot lightes and stays lit the problem is in the circut. Still no pilot then it is in the pilot or valve. Good luck.

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1 Answer

Need wiring diagram for eyes that control safty device door willnot close by one button push , have to hold button to close , light on opperator has one flash


Safety reversing sensors wire open (broken or disconnected).

Each sensor has a solid white wire and a white wire with black tracer.

The solid white wires go to terminal 2 and the wires with the black tracer go to terminal 3.


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

2 Answers

Replaced battery and starter now it wont even engage selonoid


You need to check your voltage to the starter with a Volt Meter. Check the battery cable to the starter, that should be 12.5+ or higher. If not, you have a bad cable connection. Clean it with a wire brush and make sure it makes good contact both positive and negative. If good voltage check your start voltage. Usually a Spade Connection on the starter. Check it with the spade hooked up to the starter. If no voltage, put your car in Neutral and try it. May have a bad neutral safety switch. Hope this helps.

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1 Answer

Accidentally conected it to 220 volt outlet


Hi, damage should be limited to low voltage power supply, I would definitely have a tech take a look at it, video-tek

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1 Answer

HBW 0777 Liftmaster Garage Door Opener


steve it sounds like the two eyes are not lined up to communicate with one another and complete the circuit so the door will work. This is a safety feature. Begin by seeing if adjusting the eyes will line them up and tuen on both green lights. Also be sure the wire to each light is still connected.

Apr 27, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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If you are jumping the solenoid and it cranks but wont start leave the key in the on position and give it a try. Try replacing the solenoid and the wires conecting it to the battery.

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