Limited Warranty
(Valid only in U.S.A., Canada, Puerto Rico, and the Caribbean.)
Lutron will, at its option, repair or replace any unit that is defective in materials or manufacture within
one year after purchase. For warranty service, return unit to place of purchase or mail to Lutron at 7200
Suter Rd., Coopersburg, PA 18036-1299, postage pre-paid.
THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES, AND THE IMPLIED WARRANTY
OF MERCHANTABILITY IS LIMITED TO ONE YEAR FROM PURCHASE. THIS WARRANTY DOES NOT
COVER THE COST OF INSTALLATION, REMOVAL OR REINSTALLATION, OR DAMAGE RESULTING
FROM MISUSE, ABUSE, OR DAMAGE FROM IMPROPER WIRING OR INSTALLATION. THIS WARRANTY
DOES NOT COVER INCIDENTAL OR CONSEQUENTIAL DAMAGES. LUTRON’S LIABILITY ON ANY
CLAIM FOR DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE MANUFACTURE, SALE,
INSTALLATION, DELIVERY, OR USE OF THE UNIT SHALL NEVER EXCEED THE PURCHASE PRICE OF
THE UNIT.
This warranty gives you specific legal rights, and you may have other rights, which vary from state to
state. Some states do not allow the exclusion or limitation of incidental or consequential damages, or
limitation on how long an implied warranty may last, so the above limitations may not apply to you.
This product is covered under one or more of the following U.S. patents: 5,017,837; 5038,081;
5,248,919; 5,510,679; 6,169,377; 7,190,125, D563,901, and corresponding foreign patents. U.S. and
foreign patents pending. Lutron and Vierti are registered trademarks and FASS is a trademark of Lutron
Electronics Co., Inc. NEC is a registered trademark of National Fire Protection Association, Quincy,
Massachusetts.
© 2008 Lutron Electronics Co., Inc.
Troubleshooting
Symptom
Light does not turn on and no
LEDs light up.
Light turns on and Dimmer works,
but Companion Dimmer does not
work.
LEDs scroll up and down.
Dimmer appears to work (LEDs
light up) but light does not turn on.
Dimmer works properly, then
shuts off.
Possible Cause
• The
FASS
switch on the Dimmer or
Companion Dimmer(s) is pulled down
to the off position.
• Breaker is OFF or tripped.
• Dimmer is miswired. Check wiring.
• Wire connected to the blue screw
terminal on the Dimmer is not the
same wire connected to the blue
screw terminal on the Companion
Dimmer. Check wiring.
• Dimmer has encountered an error
condition. Call
Lutron
Technical
Support.
• The Dimmer terminal wires connected
to the black and brass screws are
reversed. Switch the wires.
• Lamps burned out.
• Dimmer is overloaded or load type is
wrong. Check the load.
Advanced Programming Mode
The following
Vierti
Dimmer settings can be modified using the Advanced
Programming Mode:
High/Low End Trims
LED Brightness
Sound Off/On
Delayed Fade Wait Time
Off Fade Time
On Fade Time
Locked Preset
Consult Application Note #205 on how to use the Advanced Programming Mode.
Please visit www.lutron.com/vierti or call
Lutron
Technical Support.
Touch here for full
light output
Touch here for 50%
light output
Touch here to toggle
On/Off
Background LEDs:
Glow dimly
Light Level LEDs:
Shows current
light level
Status LED:
On = Blue, white,
or green
Off = Orange
Important Notice:
To replace lamps, power may be conveniently removed by pulling the
FASS
switch
down on the Dimmer or any Companion Dimmer. For any procedure, other than
routine lamp replacement, power must be turned OFF at the main electrical
panel.
Dimmer Operation
88
System On System Off
Turn the system on by pushing the Front Accessible Service Switch (FASSTM) up.
Pulling the
FASS
switch down removes power from the load.
Note: The
FASS
switch is not used during normal operation.
Dimmer Functions
Turning the System On/Off
FASS
Switch
Touch and hold when the unit is on: Each time the Dimmer is turned off,
delayed fade to off can be activated. As this region is held, an LED will begin to
flash, and the lights will begin to fade off with a 30 second delay.
5b - 3-Way Wiring (Two Locations)
Brass
Black
Blue
Silver
Brass
Black
Blue
120 V~ 60 Hz
Live
Neutral
Traveller 1
Traveller 1 Traveller 1
Before beginning, make absolutely sure that the power is OFF!
Wiring the Companion Dimmer on the line-side.
1. Connect the green ground wire to the bare or green ground wire in the
wallbox.
2. Black screw: Connect the live wire (120 V~), disconnected from the
removed switch, to this screw.
3. Brass screw: Connect wire (Traveller 2 - note wire color) to this screw.
4. Blue screw: Connect wire (Traveller 1 - note wire color) to this screw.
Wiring the Main Dimmer on the load-side.
1. Connect the green ground wire to the bare or green ground wire in the
wallbox.
2. Black screw: Connect wire (Traveller 2) coming from the brass screw of
the Companion Dimmer to this screw.
3. Brass screw: Connect the other wire (disconnected from the removed
switch - Dimmed Live) going to the black wire of the electronic low-
voltage transformer to this screw.
4. Blue screw: Connect wire (Traveller 1) coming from the blue screw of
the Companion Dimmer to this screw.
5. Silver screw: Connect the neutral wire in the wallbox to this screw.
Go to step 6.
Before beginning, make absolutely sure that the power is OFF!
Notes:
• Only one location can be a Main Dimmer. The other locations are Companion
Dimmers with up to four Companion Dimmers in an installation.
• The Companion Dimmer does not have a silver screw (no neutral required).
Wiring the first Companion Dimmer on the line-side.
1. Connect the green ground wire to the bare or green ground wire in the
wallbox.
2. Black screw: Connect the live wire (120 V~) (disconnected from the
removed switch) to this screw.
3. Brass screw: Connect wire (Traveller 2) from this screw to the black screw
of the next (middle) Companion Dimmer (note wire color).
4. Blue screw: Connect wire (Traveller 1) from this screw to the blue screw
of the next (middle) Companion Dimmer (note wire color).
Wiring the middle Companion Dimmer(s).
1. Connect the green ground wire to the bare or green ground wire in the
wallbox.
2. Black screw: Connect the wire coming from the brass screw of the
previous line-side Companion Dimmer (see above) to this screw.
3. Brass screw: Connect a wire from this screw to the black screw of the
next load-side Companion Dimmer or the Main Dimmer (note wire color).
4. Blue screw: Connect the wire coming from the blue screw of the first
Companion Dimmer to this screw. This wire will then continue to the blue
screw of the Main Dimmer or next load-side Companion Dimmer.
Wiring the Main Dimmer.
1. Connect the green ground wire to the bare or green ground wire in the wallbox.
2. Black screw: Connect the wire coming from the brass screw of the middle
Companion Dimmer(s) to this screw.
3. Brass screw: Connect the other wire (disconnected from the removed switch -
Dimmed Live) going to the black wire of the electronic low-voltage transformer
to this screw.
4. Blue screw: Connect the wire coming from the blue screws of the first and
middle Companion Dimmer(s) to this screw.
5. Silver screw: Connect the neutral wire in the wallbox to this screw.
5c - 4-Way Wiring (Three to Five Locations)
Black
Blue
Live
Neutral
120 V~ 60 Hz
Go to step 6.
Mount the Dimmer or Companion Dimmer(s) to
the Wallbox
• Form wires carefully into the wallbox, mount and align Dimmer
(and Companion Dimmer).
• Install the front module and the wallplate.
66
Snap on
wallplate.
