Diagram - Chamberlain LiftMaster MJ5011U Installation Manual

Medium duty door operator
Hide thumbs Also See for LiftMaster MJ5011U:
Table of Contents

Advertisement

TROUBLESHOOTING
The status of the operator can be determined by counting the number of flashes of the LED on the logic board.
# OF LED FLASHES
STATUS
1
System OK. Operating in C2 mode
2
System OK. Operating in B2 mode
3
Stuck CLOSE button
4
Monitored Entrapment Protection Device
failure
5
Incorrect motor direction
6
Maximum run timer has timed out
(Maximum run time = 90 seconds)
7
Logic Board Failure
RESTRICTED CLOSE
This method will allow you to close the door when LMEP device(s) are no longer working. Press and hold the CLOSE button until the
door reaches the closed limit. If the CLOSE button is released before the door reaches the closed limit the operator will stop and the
procedure will need to be repeated to fully close the door.

DIAGRAM

Brake (Optional)
** If interlock
is not used,
wires are
capped
together.
Capacitor
Motor
Open Limit
Switch
*
If brake is not supplied, wires
*
are capped separately
Blue
*
White
Black
Brown**
Orange
Purple
Yellow
Safety Limit
Switch
Close Limit
Switch
Grey
DIAGNOSTIC LED TABLE
FIX
None
None
Check for stuck close button or shorted close wire
Check for: 1) Misaligned or blocked Photoelectric Sensors.
2) Issue with Monitored Sensing Edge and/or wiring.
Reverse the yellow and red motor wires on the capacitor.
Check clutch adjustment. Door height or speed may exceed the range the
operator can travel. Call Technical Support for assistance.
Replace Logic Board. NOTE: It is normal for the logic board LED to fl ash 4 times
when power is applied or cycled to the operator. (Not a logic board failure.)
26
Green
Black
Black
OPEN
CLOSE
STOP
Remove Jumper to install external
door interlock.

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents