# What steps should be taken when a unit shows as disconnected?

#### **Step 1: Check Wiring**

* **Action:** Begin by inspecting all wiring connections to ensure that they are secure and correctly installed. Loose or faulty connections can often cause a unit to appear disconnected.

#### **Step 2: Verify Device Firmware**

* **Action:** Check if the device's firmware (FW) is functioning properly. You can do this by attempting to download the unit's firmware and observing whether the device appears as connected during the process.
* **Status LED Check:** If you're unable to verify through the software, observe the status LED on the unit:
  * **Constant LED:** Indicates that the unit is not communicating with the Control Unit (CU).
  * **Uneven, Fast Blinking LED:** Suggests that the unit has the wrong firmware installed.
  * **Steady, Rhythmic Blinking LED:** Indicates that the unit is functioning correctly.

#### **Step 3: Check Device Status in the System**

* **Action:** If the LED is blinking steadily but the unit still shows as disconnected, proceed to save the project in your system.
* **Monitor the Device:**
  * After saving the project, check the monitor to see if the device appears online.
  * Verify whether you can control the device from the monitor. If the device shows online and is controllable, the issue may have been a temporary glitch.

Following these steps should help you diagnose and resolve the issue when a unit shows as disconnected.


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