Troubleshooting radio functionality – LiftMaster J door operator User Manual
Page 40
40
TROUBLESHOOTING
TROUBLESHOOTING RADIO FUNCTIONALITY
The error codes will display at the radio LED.
NOTE: Radio receiver is compatible with 315 MHz remotes.
ERROR CODE
DISPLAY
SYMPTOM
POSSIBLE PROBLEM
CORRECTION
R1
Quick Flash
No response from the remote
Unlearned remote -
Try re-learning the
A user tries to use a remote,
remote (page 30).
but the RADIO LED only flashes
briefly and there is no response
from the operator.
R2
No LED activity
No response from the remote
Cannot recognize remote -
Replace battery - OR -
A weak signal caused by a
eliminate interference - OR-
discharged battery or outside
obtain a qualified remote - OR-
interference with the
check antenna connections.
remote(s) - OR - the remote(s)
being learned is not compatible
with the operator. Antenna not
installed or damaged.
R3
Radio LED turns The remote cannot be learned
Cannot recognize remote -
Replace battery - OR -
off after 30
A weak signal caused by a
eliminate interference - OR-
seconds
discharged battery or outside
obtain a qualified remote - OR-
interference interfering with the
check antenna connections.
learn process - OR - the
remote(s) being learned is not
compatible with the operator.
Antenna not installed or
damaged.
R4
2 blinks
The remote cannot be learned
Receiver memory full -
Erase all learned remotes
A user enters RADIO function
and re-learn the desired
learning mode but there is no
remote.
space left to add another remote.
R5
3 blinks
The remote cannot be learned
Duplicate remote -
This remote already has a
A user enters RADIO function
function associated with it. To
learning and selects the function change the function, erase all
to be learned. When the remote learned remotes and
button is pressed for learning, a re-learn the desired remote.
search reveals that remote
is already learned.
R6
LMEP LED flashes Cannot close via constant pressure in No safety device present -
Must connect a LiftMaster
C2, D1 or E2 modes.
A safety device is required to
Monitored Entrapment
close via constant pressure.
Protection (LMEP) device.
Troubleshooting radio functionality