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

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Door will not open unless reset then will open and close but next time it will not flashes code 5 already replaced sensor

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What are you resetting? What sensor did you replace? The flashing 5 times is the code for RPM sensor or motor overload.

Posted on Aug 20, 2010

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1 Answer

Automatic Garage Door closes then Reopens and Won't Stay Closed


Check again to see if anything is blocking sensor(s).

May 23, 2016 | Building Materials

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Liftmaster 1245 led blinks five time but door will not open


5 flashes of the LED is the code for "RPM sensor or motor overload." You can try unplugging the opener for about 15 minutes to see if it resets itself. Normally if it is the RPM sensor the motor will run for a few seconds and then turn off. Is the door not opening or not closing? Just checking to make sure.

Nov 09, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage door opens fine but will not close unless I press down the button on the wall. The sensor lights are solid and I unplugged it for a minute and I'm still having the same problem.


If your main light flashes 10 times and the door reverses to the open position when you use your remote it is a door sensor problem. It is sometimes very hard to see if one of the sensor lights is flickering.

If the main light does not flash then you can try increasing the down force just a little. This control is on the rear of the motor unit near where all those white wires go.

Check the small LED near the smart/learn button. If it is flashing a code of 5 blinks then a pause and 5 blinks it is the RPM sensor. This is a small printed circuit board just in front of the motor.

Jan 25, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Door will not close with remote.


The code you are seeing with 5 blinks is "RPM sensor or motor overload." We can eliminate the motor overload because the door is trying to close. The RPM sensor is a small printed circuit board just in front of the motor. It's a snap to replace and is available at any good door opener company. They will know exactly what you are talking about if you ask for an RPM sensor board.

Aug 26, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman garage door opener will not work. model # 139.53648SRT2


The code it is sending by flashing 5 times is 'RPM sensor or motor overload'. Is the door stuck in the open position?

Jul 08, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door will not open


The light flashing 5 times is the code for RPM sensor or motor overload. The RPM sensor is a small printed circuit board just in front of the motor. I would really doubt it is a motor problem unless you have been operating the opener enough that the thermal overload protector has shut it down. It will start running again as soon as it's cooled off.

May 20, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

When I push open or close the unit starts but stops the yellow light on rear of unit blinks 4 times then a short pause and blinks 4 times again and continues to do this



# of flashes

1

2

3

4

5

6

Rapid Flashing





Problem

The Protector System wire open or totally misaligned

The Protector System wire shorted or black/white wire reversal

Door Control or Multi-Function control Panel wire shorted

IR sensor slightly misaligned (dim or flashing sensor LED)

Motor overheated/Possible RPM sensor failure -- unplug to reset

Motor circuit failure -- replace RX/LX board

Liftmaster transmitter with the correct format code being received
(opener not necessarily programmed to respond)

Mar 28, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Keypad code will close the door but not open it.


check that both codes (in the remote & garage door opener) are the same. Press reset on the opener and reset enter the code.

Nov 05, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Opener will not reverse


FIRST YOU NEED TO RESET THE CHAIN .

Unplug power
Release the door from the opener close the door manually. take the chain loose and slide the traveler down to reengage with the trolley. Plug in power, run the unit with chain off untill it completes a clockwise cycle and stops. reconnect the chain and set tension.

Adjust the chain tension.

If it still moves 6-8 inches and flashes 5 times. the problem is in the rpm sensor.

Full diagnostics are in the owners manual - FREE at
http://help.chamberlain.com/help/en-us/InstructionManuals

Oct 06, 2008 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

SEARS/CRAFTSMAN 53628SRT Not Closing properly


sounds like the safety door sensors are at fault,also did you reprogram the remotes by pressing the smart button on the logic board,when the safety sensors are bad the door will reverse to open state.you can pully the rip cord to manualy close the door untill you solve the problem.

Sep 04, 2007 | Sears Craftsman LiftMaster Chamberlain...

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