Problem: Spark 8 controller stuck on “in communication” when activating valves

Hi everyone,

my Netro Spark 8 controller connects correctly to Wi-Fi and shows as online in the app. However, when I try to start irrigation manually from the app, it just stays on “in communication” and nothing happens.


I’ve already tried:


  • Using a different Wi-Fi network (even a mobile hotspot)
  • Replacing the controller with a new Spark 8
  • Restarting both the app and the device



If I activate the valves directly from the controller, they work fine — so it’s not a hardware issue.


Any suggestions on how to solve this?

Thanks in advance!

– Stefano


Answer From Wency Pan

19
Wency Pan
 Updated at 2025-07-22 02:20:01 UTC

Dear customer,


You can try upgrading the firmware which should work. We have sent the steps to your email.

If you encounter any issues during the process or need further clarification, feel free to let us know, and we’ll be happy to assist.


Thanks,

Netro Support

View: 14    Like: 0

21
Stefano
2025-07-22 08:30:28 UTC  
Dear Netro Support,

I’m experiencing an issue with my Netro Spark controller.

When I try to run a valve test or activate any zone from the Netro app, I get the following error:

“Master: Error (open circuit)”

However, when I operate the system manually from the controller, all valves and zones work perfectly.

Here are the steps I’ve already taken:
• Updated the firmware to version 3.3.0 (manually, via 192.168.2.1).
• Reconnected the controller to my WiFi network.
• Tried with a mobile hotspot as well – same issue.
• Checked all wiring and connections – everything is correct.

Could you please help me resolve this?
Thank you in advance.

Best regards,
Stefano Mauri