28
SYMPTOM
POSSIBLE CAUSES
SOLUTIONS
Operator does
not run and
diagnostic code
display not on
a) No power to control board
b) Open fuse
c) If on battery power only, low or dead
batteries
d) Defective control board
a) Check AC and battery power.
b) Check fuses.
c) Charge batteries or replace batteries.
d) Replace defective control board.
Control board
powers up, but
motor does not
run
a) Reset switch is stuck
b) Stop button active or jumper not in
place for stop circuit
c) If on battery power only, low or dead
batteries
d) Open or Close input active
e) Entrapment Protection Device active
f) Vehicle loop detector or probe active
g) Defective control board
a) Check reset switch.
b) Check Stop button is not “stuck on”, or verify that the stop button is
a normally closed circuit, or put a jumper on the stop circuit.
c) Charges batteries or replace batteries.
d) Check all Open and Close inputs for a “stuck on” input .
e) Check all Entrapment Protection Device inputs for a “stuck on”
sensor.
f) Check all vehicle detector inputs for a “stuck on” detector.
g) Replace defective control board.
Door moves, but
cannot set correct
limits
a) Door does not move to a limit position
b) Door is too difficult to move
c) Limits are set too close
a) Use manual disconnect, manually move door, and ensure door
moves easily limit to limit. Repair door as needed.
b) Door must move easily and freely through its entire range, limit to
limit. Repair door as needed.
c) Ensure the door moves at least one foot (30.5 cm) between the
OPEN limit and the CLOSE limit.
Door does not
fully open or fully
close when
setting limits
a) Door does not move to a limit position
b) Door is too difficult to move
a) Use manual disconnect, manually move door, and ensure door
moves easily limit to limit. Repair door as needed.
b) Door must move easily and freely through its entire range, limit to
limit. Repair door as needed.
Operator does
not respond to a
wired control/
command
(example: Open,
Close, SBC, etc.)
a) Check Open and Close command input
LEDs
b) Stop button is active
c) Reset button is stuck
d) If on battery power only, low or dead
batteries
e) Entrapment Protection Device active
f) Vehicle loop detector or vehicle probe
active
a) Check all Open and Close inputs for a “stuck on” input.
b) Check Stop button is not “stuck on”.
c) Check Reset button.
d) Charges batteries or replace batteries.
e) Check all Entrapment Protection Device inputs for a “stuck on”
sensor.
f) Check all vehicle detector inputs for a “stuck on” detector.
Operator does
not respond to a
wireless control or
remote
transmitter
a) Check XMITTER LED when wireless
control is active
b) Stop button is active
c) Reset button is stuck
d) Poor radio reception
a) Activate wireless control and check XMITTER LED is on. Re-learn
wireless control/remote transmitter to control board. Replace
wireless control as needed.
b) Check Stop button is not “stuck on”.
c) Check Reset button.
d) Check if similar wired control operates correctly. Check if wireless
controls works properly when within a few feet of operator. Check
operator’s antenna and antenna wire. Check other wireless controls
or devices.
Door stops during
travel and
reverses
immediately
a) Control (Open, Close) becoming active
b) Vehicle loop detector active
c) Low battery voltage
a) Check all Open and Close inputs for an active input.
b) Check all vehicle detector inputs for an active detector.
c) Battery voltage must be 23.0 Vdc or higher. Charge batteries or
replace batteries.
Door opens, but
will not close with
remote or
Timer-to-Close
a) Open control active
b) Vehicle loop detector active
c) Loss of AC power with AC FAIL set to
OPEN
d) Low battery with LOW BATT set to
OPEN
e Fire Dept input active
f) Timer-to-Close not set
g) Close Entrapment Protection Device
active
a) Check all Open inputs for an active input.
b) Check all vehicle detector inputs for an active detector.
c) Check AC power and AC Fail option setting.
d) Check if AC power is available. If no AC power, then running on
batteries and battery voltage must be 23.0 Vdc or higher. Charge
batteries or replace batteries.
e) Check Fire Dept input.
f) Check Timer-to-Close (TTC) setting.
g) Check all Entrapment Protection Device inputs for an active sensor.
Door closes, but
will not open
a) Vehicle loop detector active
b) Low battery with LOW BATT option set
to CLOSE
a) Check all vehicle detector inputs for an active detector.
b) Check if AC power is available. If no AC power, then running on
batteries and battery voltage must be 23.0 Vdc or higher. Charge
batteries or replace batteries.
TROUBLESHOOTING CHART
TROUBLESHOOTING
