User manual

5 Service 48
Troubleshooting
Your Sensor+ system helps you identify system problems with status reporting and
diagnostic testing capabilities.
You will usually notice a system problem in one of two ways:
• The Sensor+ beacon on the dimmer rack begins blinking, indicating the CEM+ has
detected a problem. The system may still continue to dim normally.
• You notice a problem with system performance. The beacon may be flashing, or the
problem may be caused by another part of your lighting control system.
When either of these situations occur, you can follow these steps to isolate and correct the
cause.
Make a Preliminary Examination of Your System...
 Check the CEM+ display, Sensor+ Connect or WYSILink for error messages. For an
explanation of error message causes and possible corrections, see CEM+ Error
Messages, page 50.
If lights are stuck on...
 Check for an activated Preset at your CEM+. (This can lock some or all of your dimmer
circuits at one level.)
 Make sure your Panic circuit is not activated. (This will drive some of your dimmer
circuits to full and hold them there.)
 Make sure all direct dimmer levels at the CEM+ are cleared. (This can lock some or all
of your dimmer circuits at one level.)
If lights won’t come on...
 Look for obstructions on top or in front of your installation rack that may be blocking
rack ventilation.
 Open the door and look for dust buildup on the air filter or rack modules.
 Check for tripped dimmer module circuit breakers.
 Check for tripped breakers on your main circuit breaker panel.
 Check for loose or damaged control cables coming into your dimmer rack.
 Check to see in Panic is activated (circuits set to load-shed will not come on).
 EDMX sources with a higher priority and a level of zero will override other lower priority
levels.
When you think you’ve found the problem...
 Correct any of these problems you find, press the reset button on the front of the
CEM+ module and observe the system to see if the problem still exists.
If You Cannot Locate or Correct the Problem...
If you are unable to eliminate the problem, contact your authorized ETC representative.
See Contacting ETC about Equipment Problems, page 44, for procedures on contacting
ETC for technical help.