Troubleshooting
Problem Possible
Cause
Solution
After wiring in X10
Dimmer Switch, the
unit lets out a
continuous beep.
X10 Dimmer Switch is
issuing an error beep
because the unit is wired
incorrectly.
Turn off the circuit breaker and try reinstalling X10
Dimmer Switch. If you are still experiencing an
error beep, consult an electrician to help you install
the switch.
Check the junction box wires to ensure all
connections are tight and no bare wires are
exposed.
Make sure the circuit breaker is turned on.
X10 Dimmer Switch is
not controlling the
load.
X10 Dimmer Switch may
not be getting power.
Make sure the air gap (Set button) is not pulled
out.
X10 Dimmer Switch and
the controller may be on
opposite phases.
Install an X10 signal bridge or coupler to bridge the
power line phases.
Move the other modules to different areas of your
home to reduce noise on the power line.
X10 Dimmer Switch is
not receiving signals
from X10 controllers.
Other modules may be
loading down the signal or
creating too much noise.
Install a noise filter between the X10 Dimmer
Switch and the noise-producing device.
X10 Dimmer Switch
turned on by itself.
Stray X10 signals from a
neighboring system may
have triggered X10
Dimmer Switch.
Install a power line signal blocker in your home to
keep X10 signals from other systems from
interfering.
The bulb filaments are vibrating. Use rough-service
130 Volt or appliance-grade bulbs to reduce the
noise.
The load is buzzing
when on or dim.
The dimming component
inside X10 Dimmer Switch
“chops” the power line
sine wave to reduce the
power.
Run X10 Dimmer Switch in the full-on mode or
switch to a non-dimming switch.
X10 Dimmer Switch is
getting warm to the
touch.
It is normal for wall
dimmers to get warm (but
not hot).
X10 Wall Dimmer will dissipate about 1 Watt per
100 Watts controlled. Using metal junction boxes,
removing insulation around the outside of the box,
or controlling a smaller load can help lessen the
heat.
Pull the Set button all the way out to air-gap it, and
then push it back in until it is flush with the
wallplate.
X10 Dimmer Switch is
locked up.
A surge or excessive
noise on the power line
may have glitched it.
If the above doesn’t work, perform a factory reset.
If you have tried these solutions, reviewed this Owner’s Manual, and still cannot resolve an issue you are
having with X10 Dimmer Switch, please call: 800-762-7845.
Page 7 of 8 X10WS12A Rev: 10/7/2011 6:27 PM
