Chamberlain GSD series, Installation Manual

Page: 31 / 76

30 Troubleshooting
TROUBLESHOOTING RADIO FUNCTIONALITY
The error codes will display at the radio LED.
NOTE: Radio receiver is compatible with S 2.0
®
remote controls
and keyless entry devices.
ERROR CODE DISPLAY SYMPTOM POSSIBLE PROBLEM CORRECTION
R1 Quick Flash No response from the remote
control.
Unlearned remote control-
A user tries to use a remote
control, but the RADIO LED only
flashes briefly and there is no
response from the operator.
Try re-learning the remote control
(page 21).
R2 No LED activity No response from the remote
control.
Cannot recognize remote control
- A weak signal caused by a
discharged battery or outside
interference with the remote
control(s) - OR - the remote
control(s) being learned is not
compatible with the operator.
Antenna not installed or
damaged.
Replace battery - OR -
eliminate interference - OR-
obtain a qualified remote control-
OR- check antenna connections.
R3 Radio LED turns
off after 30
seconds
The remote control cannot be
learned.
Cannot recognize remote control-
A weak signal caused by a
discharged battery or outside
interference interfering with the
learn process - OR - the
remote control(s) being learned
is not compatible with the
operator. Antenna not installed or
damaged.
Replace battery - OR -
eliminate interference - OR-
obtain a qualified remote control-
OR- check antenna connections.
R4 2 blinks The remote control cannot be
learned.
Receiver memory full -
A user enters RADIO function
learning mode but there is no
space left to add another remote
control.
Erase all learned remote controls
and re-learn the desired remote
control.
R5 3 blinks The remote control cannot be
learned.
Duplicate remote control-
A user enters RADIO function
learning and selects the function
to be learned. When the remote
control button is pressed for
learning, a search reveals that
remote control is already learned.
This remote control already has a
function associated with it. To
change the function, erase all
learned remote controls and
re-learn the desired remote
control.
R6 LMEP LED flashes Cannot close via constant
pressure in C2, D1, or E2 modes.
No entrapment protection device
present - A sensing device is
required to close via constant
pressure.
Must connect a LiftMaster
Monitored Entrapment Protection
(LMEP) Device.