Display Troubleshooting
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• Move or replace the modules that show distorted text.
•
Move or replace the first module to the left of the non-working module.
A column of the display does not work
• Check that the power cable is plugged into the module in the column.
• While power is on, look at the back of the malfunctioning module(s) to see if the
diagnostic LED is off, implying a power supply problem.
• Verify power to the power supply. A green indicator light is constantly on when the
power supply has power.
Entire display fails to work
• Check the surge suppressors in the building connected to main power source.
• Check the breakers in the power termination panel.
• Check the diagnostic LEDs on the controller for Power and Run. Refer to
•
Check/replace the signal cable from the controller to the modules.
Temperature Problems
(For displays with a temperature sensor installed)
No temperature showing on the display
Note:
The temperature sensor must be correctly installed before a current temperature
can be shown.
• Temperature always reads DC ° F (disconnect)
•
Make sure a temperature sensor is configured in the user interface
• Check the temperature sensor cable connections.
• Look for bent pins on connectors.
• Make sure the sensor has power by checking that the diagnostic LED is blinking.
