36
SYMPTOM
POSSIBLE CAUSES
SOLUTIONS
Solenoid lock not working
correctly.
a) Solenoid wired incorrectly
a) Check that Solenoid is wired to N.O. and COM terminals. Check that
Solenoid has power (do not power solenoid from control board
accessory power terminals). If shorting lock’s NC and COM wires
does not activate Solenoid, then replace Solenoid lock or Solenoid
wiring (refer to Wiring Diagrams).
Switched (SW) Accessory
power remaining on.
a) In limit setup mode
a) Learn the limits
Accessories connected to
Switch (SW) Accessory
power not working correctly,
turning off, or resetting.
a) Normal behavior
a) Move accessory to accessory power "ON"
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
TROUBLESHOOTING
TROUBLESHOOTING CHART continued...
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 & close first)
Tandem Mode: OFF
Synchronized Close: ON
Bi-Part Delay: OFF (will
open first & close last)
Tandem Mode: OFF
Synchronized Close: ON
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.
DUAL GATE SETTINGS
NOTE:
We recommend that all accessories and board configurations are set on the primary operator.
MAIN CONTROL BOARD
APPENDIX
Summary of Contents for RSW12U
Page 2: ......
