---
title: How can an electrical engineer troubleshoot installation issues with a Verv isolator?
description: Troubleshooting guide for electrical engineers installing Verv isolators. Covers no LED issues, flashing sequences, and appliance power failures with step-by-step solutions.
---

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# How can an electrical engineer troubleshoot installation issues with a Verv isolator?

After installation and powering up the system, engineers should monitor the device’s LED behavior and verify power delivery to ensure the system is functioning correctly. Here's how to troubleshoot common issues:

---

#### **Issue: No LED Indicator**

- **Step 1:** Check that the board is receiving power.  
  → Use a multimeter to **test voltage at the terminals**.
- **Step 2:** If there’s still no LED activity after confirming power,  
  → **Contact the Verv technical support team** for further assistance.

---

#### **Issue: Flashing Red, Blue & Green Sequence**

- **Step 1:** Power off the device.
- **Step 2:** Check that the **SD card is properly inserted** into its terminal.
- **Step 3:** Power the isolator back on.  
  → Confirm whether the flashing sequence has stopped.
- **Step 4:** If the issue persists,  
  → **Contact the Verv technical support team**.

---

**Issue: Appliance Not Powering Up**

- **Step 1:** Measure the voltage across the terminal block.  
  → Confirm readings of **either 120V or 240V**, depending on the setup.
- **Step 2:** If voltage is correct but the appliance is still unresponsive,  
  → **Contact the Verv technical support team**.

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