Troubleshooting - Chamberlain MH5011U-RH Installation Manual

TROUBLESHOOTING

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