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22
T R O U B L E S H O O T I N G
Technical Support 1-800-528-2806
CONDITION
POSSIBLE CAUSE
FIX
OPERATOR WILL NOT
RESPOND TO ANY
COMMANDS
A) No power
➤
Verify primary line voltage (120Vac,60Hz) is present at terminals L1 & L2. The
LED will flash when power is present.
B) Stop circuit not complete
➤
Verify Stop Button input (terminals 3 & 5) is properly wired and stop button is
not stuck.
C) Stuck button on 3-button
control station
➤
Verify that all buttons are actuating freely and releasing properly.
D) Interlock input activated
➤
Verify jumper is located at terminals 3 & 4 if interlock is not present.
➤
Verify interlock is properly wired and not activated.
E) Motor overload tripped
➤
Overload is internal within motor. Allow to cool and retry.
F) Accessory failure
➤
Attempt to close by holding the CLOSE button for more than 5 seconds. If
door closes, check accessory for proper wiring, polarity, connections or
damage.
➤
Verify safety eyes are aligned or safety edge is not activated.
G) Possible component failure
➤
Call Technical Support for assistance.
OPERATOR MAKES
NOISE BUT DOOR DOES
NOT MOVE
A) Clutch slipping
➤
Adjust clutch, see ADJUSTMENT section.
B) Brake not releasing (if present)
➤
Verify brake assembly operation and wiring.
C) Door operation problem
➤
Disconnect trolley and check door for proper operation.
OPERATOR MOVES IN
THE WRONG DIRECTION
OPEN and CLOSE button wiring
connection reversed
➤
Check 3-button control wiring.
DOOR DRIFTS AFTER
OPERATOR STOPS
A) Door not balanced properly
➤
Disconnect trolley assembly and check door for proper operation.
B) Clutch slipping
➤
Adjust clutch, see ADJUSTMENT section.
C) Brake not functioning properly
➤
Check brake mechanism to ensure brake lever is free and brake pads are
engaging the brake disc.
DOOR OPENS/CLOSES
TOO FAR
Limits not adjusted properly
➤
Adjust limits. See ADJUSTMENT section.
DOOR REVERSES
UNEXPECTEDLY
Intermittent Safety Device
activation
➤
Check all connections.
TTC NOT FUNCTIONING
A) Monitored Safety Devices
➤
Check all connections. Verify Photo eyes are not blocked and the sensing edge
is not activated.
B) TTC temporarily disabled
➤
Close and Open the door. TTC will be re-enabled.
C) TTC not programmed properly
➤
Reprogram TTC. See PROGRAMMING TTC section.
RADIO FUNCTIONALITY NOTE:
Built in radio receiver compatible with all LiftMaster 315Mhz remote control devices.
NO RESPONSE
A) Remote control is not
programmed
➤
See PROGRAMMING REMOTE CONTROLS section.
B) Remote control not compatible
➤
Obtain qualified LiftMaster remote control device.
C) Low battery
➤
Replace battery.
REMOTE CANNOT BE
LEARNED
A) Low battery
➤
Replace battery.
B) Remote control not compatible
➤
Obtain qualified LiftMaster remote control device.
POOR RADIO RANGE
A) Low battery in remote
➤
Replace battery.
B) Antenna not configured
➤
See SETUP RADIO ANTENNA.
C) Ambient radio interference or
building structural issue
➤
Use EXTERNAL ANTENNA kit (see ACCESSORIES page).