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SYMPTOM POSSIBLE CAUSES SOLUTIONS
Accessories
connected to
Accessory power
not working
correctly, turning
off, or resetting.
a. Accessory power protector active
b. Defective control board
a. Disconnect all accessory powered devices and measure accessory
power voltage (should be 11.5 – 17.5 Vdc). If voltage is correct,
connect accessories one at a time, measuring accessory voltage
after every new connection.
b. Replace defective control board
Solar operator not
getting enough
cycles per day.
a. Insufficient panel wattage
b. Excessive accessory power draw
c. Old batteries
d. Solar panels are not getting enough sunlight
a. Add more solar panels
b. Reduce the accessory power draw by using LiftMaster low power
accessories
c. Replace batteries
d. Relocate the solar panels away from obstructions (trees, buildings,
etc.)
Solar operator,
insufficient standby
time.
a. Insufficient panel wattage
b. Excessive accessory power draw
c. Battery capacity too low
a. Add more solar panels
b. Reduce the accessory power draw by using LiftMaster low power
accessories
c. Use batteries with higher amp hour (AH) rating
Dual Gate Settings
NOTE: We recommend that all accessories and board configurations are set on the primary operator.
Main control board
FEATURE PRIMARY OPERATOR SECONDARY OPERATOR
Timer-to-
Close
Set the TTC dial to desired
setting
OFF
Bi-Part
Delay
Switch
Bi-Part Delay: ON (will open
last and close first)
Tandem Mode: OFF
Synchronized Close: ON
Bi-Part Delay: OFF (will open
first and close last)
Tandem Mode: OFF
Synchronized Close: ON
Accessories
ACCESSORY PRIMARY OPERATOR
SECONDARY
OPERATOR
Remote Controls Program remote
controls 1 to 50 to the
primary operator.
Program remote
controls 51 to 100 to the
secondary operator
LiftMaster Internet
Gateway
Program to primary
operator.
Garage and Gate
Monitor
Program to primary
operator.
TROUBLESHOOTING
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