Troubleshooting Error Codes - LiftMaster Elite Série Manuel D'installation

TROUBLESHOOTING ERROR CODES

Logic 5.0 operators incorporate a self diagnostic feature built into the MAS LED. In addition to indicating when routine maintenance is
due, the MAS LED can be used to troubleshoot problems with the operator.
If the MAS LED on the logic board or 3-button control station is fl ashing on and off rapidly, the Maintenance Alert System has been
triggered and service is due on the operator. If the MAS LED fl ashes 2 or more times in a row followed by a pause, an operator error has
occurred. To view the errors, turn the selector dial to DIAG and press the OPEN button. To view the individual error codes (if more than
one exists) press CLOSE. It is possible to have more than one error at a time.
Use the chart below to determine the error.
ERROR CODE
1 blink MAS triggered (cycles or months).
2 blinks No RPM input during opening or
closing.
3 blinks (MRT) Maximum Run Time has
timed out.
4 blinks Obstruction sensed on closing.
5 blinks A button is stuck (longer than 2
minutes).
6 blinks Invalid option card plugged into
option card receptacles.
7 blinks LiftMaster Monitored Entrapment
Protection (LMEP) Device faulted
or removed for greater than
2 minutes.
8 blinks Brownout Detected - under voltage. Operator will run as long as
9 blinks Power board failure.
10 blinks Operator was not in programming
mode when the motor phase
jumper was changed.
11 blinks Too much voltage supplied to
operator - over voltage.
12 blinks Current sense fault.
(3 Phase Only)
NOTE: Error codes take priority over normal MAS LED operation. Error codes will repeat on the MAS every 1.5 seconds until cleared.
There may be more than one error present, but only the highest priority will fl ash. If the highest error is cleared, the next highest will
fl ash. All errors self-correct when the corrective action is taken. A reset is not needed.
DESCRIPTION
Normal operation.
The door only responds to
constant pressure commands.
The door stops before reaching
the desired time.
Operator will reverse to OPEN
position.
The control station will not
respond.
Option card will not function
properly.
Normal operation (5 second
constant pressure override
required to close).
enough power is present.
No operator movement.
The phase will not change.
Operator will run as long as a
component failure does not
occur.
Motor moves for limited cycles,
then motor no longer moves.
SYMPTOM
Reset MAS (page 40).
Clutch is slipping, adjust clutch, or verify RPM sensor
connection or replace RPM sensor.
NOTE: To relearn the RPM sensor, move the door with
a constant pressure command. The door will stop once
relearned and normal operation will resume.
Check the operator for any faults (e.g., bad limit
switch), program the Max Run Timer OR reset to
factory defaults.
Remove obstruction or realign photoelectric sensor.
The control station must be fixed or replaced before it
will be recognized as an input.
Refer to accessories page for list of supported option
card(s).
Cleared when entrapment protection device is cleared
or connected.
1. Check AC line for voltage.
2. Check transformer secondary
for low voltage.
Too many accessories may be connected to the
transformer.
Replace power board.
Enter programming mode and move phase jumper to
change phase.
1. Check AC line for voltage.
2. Voltage to be within +/- 10% of intended voltage.
1. Check current sense wiring connection.
2. Cycle operator power after wiring has been
corrected.
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SOLUTION
Troubleshooting