LG DOAS Installation And Operation Manual page 48

Dedicated outdoor air system
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11. After 5 minutes, verify the I/O modules and status light on the controller are illuminated. The beat light on the controller should be amber
and should pulse approximately once per second.
12. If your network or laptop is connected to the primary LAN port, verify that the PRI light on the controller is blinking to indicate a
connection on the primary port.
If you have any problems setting up the controller or you are unable to verify the proper LED lights on the controller and I/O modules, contact
LG Technical Support for further assistance.
Testing Input Values
Once you have verified that the controller connection has been established, the next step is verifying the
inputs to the I/O modules. Follow the instructions below to verify inputs.
Web User Interface
Once you are connected to the web user interface and logged into the home page, you will see a menu in
the top right corner. This menu allows you to navigate to the available pages in the web user interface.
1. From the menu, select the IOs link.
The IOs page allows you to see the values being read and written to the inputs and outputs of the I/O
modules. The raw inputs have been scaled to the proper value and unit so they are easy to read and
understand. Each input and output is also labeled with the corresponding port on the I/O module so they can
be easily found on the hardware. The inputs are in the left column and the outputs are in the right column.
2. Check to see if any inputs are faulting or in an alarm state.
Figure 65: IOs Screen
• Blinking values with a black background indicate that in an input had a previous alarm but it has not been acknowledged.
• Blinking values with an orange background indicate that an input is both faulting and in an alarm state.
3. Any value with an orange background is faulting and needs to be investigated.
4. Use the wiring diagram and the point name and address to troubleshoot the sensor.
A fault can be as simple as ensuring the wiring is properly connected to the controller.
5. Verify the sensor is properly connected to the appropriate terminals on the controller.
6. Verify that the signal coming from the sensor is correct. For example, if the sensor is a 0-10 VDC sensor a proper DC signal should come
from the sensor.
7. Once all alarms have been acknowledged and all faulting sensors have been resolved, check to see that all input values are correct.
8. Check temperature readings with a temperature sensor to ensure they are reading the actual temperature.
LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG Life's Good" is a registered trademark of LG Corp.
48
Due to our policy of continuous product innovation, some specifications may change without notification.
Figure 66: Faulted Suction Pressure Input
Figure 64: IOs Menu

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