TROUBLESHOOTING GUIDE
for 2016 UL 325 Compliant Gate Operators
LA500U
LA400U
LA412U
CSW24U
CSL24U
RSL12U
Models
RSW12U
CSW200U
SL3000U
SL585U
SL595U
LiftMaster
845 Larch Avenue
Elmhurst, IL 60126-1196
TABLE OF CONTENTS
SAFETY 1
SAFETY SYMBOL AND SIGNAL WORD REVIEW ..................................1
BEFORE YOU BEGIN 2
2016 UL COMPLIANT GATE OPERATORS .............................................2
BASIC TROUBLESHOOTING 3
MULTI-METERS ..................................................................................... 3
TRANSFORMERS ................................................................................... 4
RELAYS .................................................................................................5
EXPANSION BOARD SWITCH SETTINGS ..............................................5
CAPACITOR (FOR AC OPERATORS) ......................................................6
DC MOTORS .......................................................................................... 7
AC MOTORS ..........................................................................................8
ERASE MEMORY ................................................................................... 9
DIAGNOSTIC CODES 10
SOLAR 16
SOLAR TROUBLESHOOTING ...............................................................16
24V APPLICATIONS .............................................................................17
12V APPLICATIONS .............................................................................18
POWER 19
MODELS CSW200U AND SL3000U .....................................................19
MODELS SL585U AND SL595U (SINGLE PHASE) ..............................20
MODELS SL585U AND SL595U (THREE PHASE) ................................21
MODEL LA412U ...................................................................................22
MODEL LA400U ...................................................................................23
MODEL LA500U ...................................................................................24
MODELS CSL24U AND CSW24U .........................................................25
MODELS RSL12U AND RSW12U ........................................................26
® 27
MYQ
FREQUENTLY ASKED QUESTIONS ...................................................... 27
TROUBLESHOOTING MyQ
MyQ® ACCOUNT ISSUES .....................................................................30
MyQ® ACCOUNT ISSUES .....................................................................31
MyQ® ERROR CODES ..........................................................................32
INCOMPATIBLE ROUTER AND SWITCH ..............................................34
® ...................................................................................................................29
SAFETY
SAFETY SYMBOL AND SIGNAL WORD REVIEW
When you see these Safety Symbols and Signal Words on the following pages, they will alert
you to the possibility of Serious Injury or Death if you do not comply with the warnings that
accompany them. The hazard may come from something mechanical or from electric shock.
Read the warnings carefully.
When you see this Signal Word on the following pages, it will alert you to the possibility of
damage to your gate and/or the gate operator if you do not comply with the cautionary
statements that accompany it. Read them carefully.
IMPORTANT NOTE:
• BEFORE attempting to install, operate or maintain the operator, you must read and fully
understand the manual provided with your operator and follow all safety instructions.
• DO NOT attempt repair or service of your gate operator unless you are an Authorized
Service Technician.
1
MECHANICAL
ELECTRICAL
BEFORE YOU BEGIN
2016 UL COMPLIANT GATE OPERATORS
New UL 325 standards for vehicular gate operators go into effect in January of 2016. The new standard
will require gate operators to monitor for fault conditions of external entrapment devices. LiftMaster has
not only updated their line of gate operators to meet the new UL 325 standard, they have also taken the
opportunity to add a common user interface and common feature sets across the line to increase
performance, safety and accessibility. All LiftMaster UL compliant gate operators will come with external
monitored retro-reflective photoelectric sensors (model LMRRU).
These operators contain an inherent (internal) entrapment protection system and REQUIRE the
addition of an external monitored entrapment protection system (non-contact photoelectric sensor or
contact edge sensor) for EACH entrapment zone prior to gate movement. A monitored device sends a
pulsed signal to the operator so the operator is aware of the device. If the operator does not receive the
signal from the device it will not run.
An entrapment zone is every location or point of contact where a person can become entrapped between
a moving gate and a stationary object. Your application may contain one or many entrapment zones.
Property owners are obligated to test entrapment protection devices monthly. Use only LiftMaster
approved entrapment protection devices.
LiftMaster Monitored Retro-Reflective
Photoelectric Sensors (Model LMRRU)
2
BASIC TROUBLESHOOTING
MULTI-METERS
The image is an example of a generic multimeter. LiftMaster currently has no intended
affiliations with this multi-meter manufacturer. This is not an endorsement for this
particular meter model. When shopping for a meter, look for a meter able to fit in a shirt
pocket or clip on a belt. A meter with an audio signal (buzzer) for continuity checks is
recommended.
CHECKING OHMS/CONTINUITY
When checking the operation of a switch, select the ohm mode on multimeter. (The ohm
symbol is
ohms. If there is more than one setting in the ohm section of the meter, select the one
with the audio signal. To test a limit switch, connect one test lead to the Common prong
and the other to the Normally Closed prong. The meter should read 0 resistance or very
low resistance. The electricity is flowing from the Common prong to the Normally Closed prong.
This demonstrates continuity. Activate the switch, the meter will read Infinite resistance or no
continuity. The wires inside the switch are no longer touching between the Common prong and the Normally Closed prong. Move the test lead from
Normally Closed to Normally Open. While the activation arm is not pressed, the meter should read open circuit, demonstrating no continuity.
Activating the arm should read 0 resistance, demonstrating continuity. The procedure is called a “Continuity Check” and is used to check for a
continuous flow of electricity.
CHECKING VOLTAGE
A multimeter may have several settings for checking voltages. The number associated with each setting is the maximum voltage able to be read. A
meter may be damaged if connected to a higher voltage than selected. Either AC or DC must be selected prior to testing any circuit. AC stands for
alternating current and DC stands for direct current. AC is usually the incoming line voltage, i.e. 115 Vac, 460 Vac and so on. 24 Vac is also found in
the control circuit of an operator. DC is usually a power source from a battery or the control voltage in a logic board. Set the meter to VOLTS AC at the
lowest setting which is still higher than the expected voltage. If 115 Vac is expected and the meter has 10 Vac, 50 Vac, 250 Vac and 1000 Vac, turn the
dial to 250 Vac. Some meters have only one Vac choice and the meter can automatically adjust for the voltage received (auto scaling).
). Make sure the test leads are plugged into the correct sockets for reading
3
BASIC TROUBLESHOOTING
TRANSFORMERS
Transformers are used to change incoming voltage to a different outgoing voltage. A transformer
has a primary side (incoming voltage) and a secondary side (outgoing voltage). The primary side
connects to wires from the main power source and the secondary side outputs the new voltage
created. In commercial gate operators, the secondary side is generally 24 Vac. Read the markings
on the transformer to determine the primary and secondary voltages. Transformers are rated in
VOLT Amps (VA). A transformer can only pass the rated amount of electricity from the main
power to the secondary side. Be careful not to overload the transformer. Verify the amperage
rating on all devices connected to the 24 Vac side of the transformer including devices attached to
the control board. Multiply the Amperage rating for each device by the voltage needed to run the
device.
EXAMPLE FOR CALCULATING AMPERAGE DRAW
Below is an example of text for a label that could be placed on accessory devices:
Output Rating…5 AMPS 28VAC or DC Max
Power…24VAC @ 30ma
The “Power” rating is required. The transformer’s secondary side is 24 VAC and the transformer is rated for 20VA. The example accessory above uses
30 milli-amps, which is .03 Amps. Multiply the volts being used (24V) and the amps (.03A) to get the VOLT Amps (VA) used by the accessory
(24Vx0.03A=0.72VA). That leaves (20-0.72=) 19.28VA left for other accessories (photoelectric sensors, loop detectors, etc). Once the total VA exceeds
20VA, the operator may experience failures. For operator setups requiring multiple accessories, calculate total VA draw and upgrade the transformer if
necessary (40VA transformers or greater are available). The output rating is how much electricity the accessory is able to have pass through it. This
number is useful when determining if an accessory will properly function long term with the operator. The output rating has nothing to do with the
required amount of electricity to make the accessory function.
24 Vac
(Example: Block Transformer)
COM
COM
120
120
240
240
TYPE OF TRANSFORMERS MODELS
Plug-in Transformer LA400U, RSL12U, RSW12U
Toroid Transformer LA500U, CSL24U, CSW24U
Block Transformer CSW200U, SL3000U, SL585U, SL595U
4
BASIC TROUBLESHOOTING
RELAYS
EXPANSION BOARD RELAYS
In gate operators, relays are often used to either control certain operator functions or activate/deactivate ancillary devices such as heaters or lights.
When electricity is applied to a relay coil, it energizes a magnet and will close a Normally Open switch or open a Normally Closed switch. A relay
typically has prongs labeled COMM , NO, NC, and two prongs to power the relay coil. Relays are available with different coil voltages and contact
options. LiftMaster’s line of gate operators primarily use double pole/double throw relays. The auxiliary relays are single pole, double throw. A pole is
another name for a switch. Double pole is two separate switches being turned on or off by the same activation coil (two separate Comms, NCs and
NOs). Double throw means there are two positions for the output (NO and NC).
The 2 Auxiliary Relays on the expansion board can be set to activate in different conditions based on how you set the 3 switches for each relay. They
can be set to activate any time the gate is open or closed or when the gate is in motion. In one setting you can trip the relay 3 seconds before the gate
begins to move and while the gate is in motion. You can set the relay to activate if the gate is forced off the closed limit position. One setting for Aux
Relay 1 uses the LEDs for the Open, Close, and Stop inputs to display how many cycles (to the nearest 1000) the operator has performed. The
Auxiliary relays can also be used in conjunction with a barrier arm operator for the SAMS or tandem function.
RELAYS ON THE EXPANSION BOARD
OPEN
1
2
3
CLOSE
POWER
COM
ONLY
EDGE
EDGE
COM
SBC
OPN
CLS
STP
BOARD
TO MAIN
EYE
EYE/
EYE/
RELAY WIRING EXAMPLE
–
Traffic Light
Class 2 Power Source
(42 Vdc [34 Vac], 5 A maximum)
+
EXPANSION BOARD SWITCH SETTINGS
• The Quick Close feature allows the gate to close without having to travel to the full open position. When active, the operator monitors the Interrupt
Loop and Close Eyes inputs and once the vehicle clears these devices the gate will reverse and Close.
• When the AC Fail Open switch is selected, the operator will move the gate to the Open position if AC Power is lost. If the switch is set for the
Battery option, the operator will run on the battery until the battery drops below a certain voltage. At that point, the gate will either open or close
depending on how you set the Low Battery switch on the main control board. NOTE: The AC Fail Open switch is not functional for AC operators.
• The Exit Fail switch sets the operator to either open or remain closed in the event of an internal detector failure (loop short or open).
• The Anti-Tailgate switch alters the way the Interrupt Loop affects gate operation. When the switch is on, the gate pauses if the gate is closing and
the interrupt loop is activated. The gate will stay paused until the vehicles backs off the loop, then continue closing.
POWER
BOARD
TO MAIN
EYE
1
ONLY
EYE/
2
EDGE
EYE/
3
EDGE
COM
OPEN
CLOSE
SBC
OPN
CLS
STP
COM
5
BASIC TROUBLESHOOTING
To protect against fire and electrocution:
• DISCONNECT power (AC or solar and battery) BEFORE installing or servicing operator.
CAPACITOR (FOR AC OPERATORS)
SYMPTOM: A bad capacitor will cause a motor to hum when trying to run, or stall while it is running.
CHECK THE CAPACITOR:
1
Disconnect ALL power from operator.
2
IMPORTANT: Discharge the capacitor BEFORE
touching it!
Discharge the capacitor by touching a
screwdriver across the capacitor terminals
(make sure to hold the insulated end of the
screwdriver when doing this). You may see a
small spark when discharging the capacitor,
this is normal.
Visually inspect the capacitor for any burn
marks, bubbling or oil leakage. This is a good
indication of a bad capacitor.
SOLUTION: If the capacitor measures less than 90% of the rating, it should be replaced.
3
Using a multi-meter, measure the capacitance
between the capacitor contacts. The
measurement on the meter should be within
10% of the uF rating on the label.
6
BASIC TROUBLESHOOTING
To protect against fire and electrocution:
• DISCONNECT power (AC or solar and battery) BEFORE installing or servicing operator.
DC MOTORS
SYMPTOM: The motor will not run.
CHECK THE MOTOR:
Disconnect ALL power from operator. Disconnect the gate from the operator.
12V MOTOR 24V MOTOR
DIAGNOSTICS
1
MOTOR
Connect the battery to the motor
2
harness as shown.
Disconnect the motor
harness from control
board.
Jumper Cables
DIAGNOSTICS
1
Disconnect the motor harness
from control board.
MOTOR
Connect the batteries to the motor
2
harness as shown.
Jumper Cables
BATTERIES
SOLUTION: If the motor did not run, replace the motor.
7
BASIC TROUBLESHOOTING
To protect against fire and electrocution:
• DISCONNECT power (AC or solar and battery) BEFORE installing or servicing operator.
AC MOTORS
SYMPTOM: The motor will not run.
CHECK THE MOTOR:
Disconnect ALL power from operator. Disconnect the gate from the operator. Unplug the motor harness from the board and measure the resistance of
the motor. Refer to illustrations.
Measure resistance between:
RUN 1 = 600 ohms or less
RUN 2 = 600 ohms or less
START = 50k ohms or greater
THERMAL SWITCH = 0 ohms
Unplug motor harness
from power board
BEFORE measuring.
THERMAL SWITCH
1
3
2
456
789
10
12
11
12
Blue
11
Yellow
10
RUN 2
START
RUN 1
Yellow/Black
Orange
9
White
8
Red
7
6
Purple
5
Gray
Yellow/Black
4
Purple
3
Gray
2
Black
1
MODELS CSW200U & SL3000
Black
Red
MOTOR
ID
MOTOR RED MOTOR BLUE
J14
J10
MOTOR
CONTROL
CURRENT
SENSOR
J8
J13
J11
J19 J21
J17 J20
J7 SWITCH
TRANSFORMER
J5J3COMM
J2
J18
J1
OUTLET
J12
J6
J4
J16
Measure resistance between:
15 to 7
14 to 8
12 to 6
11 to 6
9 to 5
Resistance should be
600 ohms or less
There should be continuity
between 1 and 4 (Thermal Switch)
Unplug motor harness
from power board
3
BEFORE measuring.
15 13
1
2
4
56
789
10
111412
15
Yellow
14
Black
13
Purple
Red
12
11
White
10
Purple
9
Blue
8
Brown
7
Orange
6
Gray
5
Purple
4
Yellow/Black
3
Purple
2
Purple
1
Yellow/Black
THERMAL SWITCH
Motor shaft should
turn easily.
Measure resistance between:
Red and Black
White
120VAC
MOTOR
WHITE
INPUT
NEUTRAL
WHITE
BLACK
INPUT
HOT
SWITCH
Black and White
Red and White
Resistance should be 600 ohms or less.
SOLUTION: If the motor measured too much resistance or zero resistance, replace the motor.
8
BASIC TROUBLESHOOTING
ERASE MEMORY
ERASE ALL REMOTE CONTROLS
1. Press and release the LEARN button (operator will beep and green XMITTER LED will light).
2. Press and hold the LEARN button again until the green XMITTER LED flashes and then release the button (approximately 6 seconds). All remote
control codes are now erased.
TO REMOVE AND ERASE ALL MONITORED ENTRAPMENT PROTECTION DEVICES (AC OPERATORS)
1. Remove the entrapment protection device wires from the terminal block.
2. Press and release the OPEN LEFT and OPEN RIGHT buttons simultaneously. The handing direction LED will remain solid. The other direction LED
will begin flashing (entering setup mode).
3. Press the OPEN LEFT and OPEN RIGHT buttons simultaneously to exit.
TO REMOVE AND ERASE MONITORED ENTRAPMENT PROTECTION DEVICES (DC OPERATORS)
1. Remove the entrapment protection device wires from the terminal block.
2. Press and release the SET OPEN and SET CLOSE buttons simultaneously. The SET OPEN and SET CLOSE LEDs will turn on (entering learn limit
mode).
3. Press and release both SET OPEN and SET CLOSE buttons again to turn off the SET OPEN and SET CLOSE LEDs (exiting learn limit mode).
Any remaining entrapment protection devices will automatically relearned and any disconnected entrapment protection devices will be unlearned. A
minimum of ONE monitored entrapment protection device is required to operate the gate.
ERASE LIMITS (DC OPERATORS)
1. To erase the limits, press and hold the SET OPEN and SET CLOSE buttons simultaneously (5 seconds) until both the SET OPEN and SET CLOSE
LEDs blink rapidly and the operator beeps.
2. Release the buttons and the SET OPEN and SET CLOSE LEDs will blink slowly indicating the limits will need to be set.
Any remaining entrapment protection devices will automatically relearned and any disconnected entrapment protection devices will be unlearned. A
minimum of ONE monitored entrapment protection device is required to operate the gate.
ERASE HANDING (AC OPERATORS)
1. To erase the limits, press and hold the OPEN LEFT and OPEN RIGHT buttons simultaneously (5 seconds) until both the OPEN LEFT and OPEN
RIGHT LEDs blink rapidly and the operator beeps.
2. Release the buttons and the OPEN LEFT and OPEN RIGHT will blink slowly indicating the handing will need to be set.
9
DIAGNOSTIC CODES
To protect against fire and electrocution:
• DISCONNECT power (AC or solar and battery) BEFORE installing or
For continued protection against fire:
• Replace ONLY with fuse of same type and rating.
servicing operator.
DIAGNOSTIC CODES
NOTE: When cycling or disconnecting power (ac/dc) to the control board, it is recommended that you unplug the J15 plug.
TO VIEW THE CODES
The codes will show on the diagnostic display.
...then press and
hold the OPEN
button until "Er"
shows on the
display.
Press and
hold the
STOP
button...
...then press
and hold the
CLOSE
button...
The operator will show the code sequence number followed by the code
number:
CODE SEQUENCE NUMBER
The first number shown is the most
recent code (example: "01"). The
display will show the sequence of
codes that occurred starting with "01"
and going up to code "20".
A SECOND
LATER....
CODE NUMBER
The second number shown after the
code sequence number is the code
itself (31-99, example" "31"). Refer to
the chart on the following page for an
explanation of each code.
DIAGNOSTICS DISPLAY
OPEN, CLOSE, & STOP BUTTONS
TO SCROLL THROUGH THE SAVED CODES
Press the OPEN button
to cycle to the most
recent code ("01").
Press the CLOSE button
to cycle to the oldest
code (up to "20").
The operator will only keep track of up to 20 codes, then will start saving
over the oldest codes as new codes occur.
TO EXIT
Press and release the STOP button to exit. The display will also time out
after two minutes of inactivity.
TO RESET THE CODE HISTORY
1. Press and hold the STOP button for six seconds. The display will
show "Er" then "CL" alternately for six seconds.
2. Release the STOP button. The code history has now been reset and
the display will show "- -" until a new code occurs.
3. Press and release the STOP button to exit.
10
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