Maintenance and Troubleshooting | 6-1
MAINTENANCE AND TROUBLESHOOTING
The operations in this chapter should be performed only by qualified
service personnel experienced in electrical safety techniques.
There are no operator-serviceable components inside the WDG system.
Never service the controller or sensor unless power has been removed
from the controller and sensor, and the sensor has been allowed to cool
for at least one hour. Also, always use gloves when working on the sensor.
This chapter describes Series 2000 control unit system and error messages.
It also provides troubleshooting assistance. System and error messages
appear on the fourth line of the display at three second intervals until the
condition is corrected or has ended. If there is more than one message, the
messages will alternate on the display at three second intervals. These sys-
tem and error messages are listed in this chapter alphabetically to make
them easier to locate.
System or error messages will not appear on the display when you are
using the control unit keys to access menu functions.
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