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Spark not working – won’t start valves despite all attempts

Stefano
Updated at 2025-07-23 06:55:23 UTC 

Hi everyone,


I’ve been using a Netro Spark (8-zone model) for some time, but recently it stopped working properly.

The controller connects to Wi-Fi and appears online in the app, but when I try to start any valve (manually or via schedule), it says “communicating” and nothing happens.


Here’s what I’ve already tried:


  • Restarted the Spark multiple times
  • Performed a full reset (12 seconds on RST button)
  • Re-added the device in the app
  • Tried to trigger irrigation manually from both the app and the controller
  • Confirmed that the system works when I open the valves manually from the controller
  • Tried different power supplies
  • Connected to a mobile hotspot instead of my home Wi-Fi (same result)
  • Updated the firmware to the latest version (v3.3.0)
  • Purchased a brand new Spark controller and tested it — same exact issue



At this point, it looks like the issue is not hardware or network-related.

Could it be a firmware bug or a server-side problem?


Any help would be greatly appreciated!


Thanks in advance,

Stefano Mauri


View: 688   Answer: 2

Issue with Netro Spark

Fabrice GOUFFRAN
Updated at 2025-07-23 06:34:33 UTC 

Hello,


Since a few days my Netro is not receiving data from the different Whisperers connected and all of them are well connected to Wi Fi and charged. I am not able to run manual watering, only the planned ones go. It looks like there is an issue or with my Netro Spark or with the Netro Server. I am based in Italy. Please let me know. Thank you.


View: 685   Answer: 2

Interpretation of soil moisture readings by Whisperer

Missy Bartell
Updated at 2025-07-26 12:13:30 UTC 
Topic: General
I have two Whisperers that I move around to various parts of my graden to get comparative readings of sunlight and soil moisture.  I really do not know how to interpret the moisture readings which generally range from 50% to 98% but can be as low as 30%.  Soil type varies from a clayey loam to heavy clay.   How do I know when watering is required?  Does the meter measure the capillary water?  The adhered water?  The percentage of voids filled with water?  How does Netro calculate the percentage of water and what do the readings mean?
View: 99   Answer: 1

Watering time

Andrew Gor
Updated at 2025-07-23 14:36:45 UTC 
I added the Netro whisperer 2 soil sensor to my ficus pot. The sensor gives me contradictory messages. It says that next watering should be in one week but every night it sends a notification to 'water the ficus sensor's. What should I do? 
View: 688   Answer: 1

Why can’t I change my zone off whipsper

Andrew Woods
Updated at 2025-07-22 19:30:55 UTC 
My whisper smart sensor is contacted to my garden plants zone at my holiday home. The smart schedule is not working.this is due to the fact that the sensor battery says it needs charging. Obviously I can’t charge it as I am not there. But I can’t seem to find a way of disconnecting the sensor from the program and on to smart schedule 
View: 672   Answer: 1

Tiempo de riego

Doyle Farm
Updated at 2025-03-16 17:30:27 UTC 

Cómo puedo hacer que el programador riegue más de 60 minutos. Solo me permite 60 minutos por programa

Gracias Marcelo 

View: 1700   Answer: 1

Reset, but still not connecting

lorenzo s
Updated at 2024-12-19 23:36:08 UTC 

Please help. I'll provide a reward for getting my N-12 to work.


lss

View: 3005   Answer: 1

Water transfer during rain

mark spencer
Updated at 2025-03-12 02:34:42 UTC 

Assumption is that rain events need to prevent / skip watering.


I have one requirement that is the opposite where if it has rained more than 5mm, i want to use my watering system to pump water for about 15 minutes from my 100,000 litre water tank to a 12,000 litre holding tank that I use for gravity fed gardens. 


Is there a way?


View: 1731   Answer: 1

Whisperer plant sensor, not showing up in app

Mike Carey
Updated at 2025-03-02 17:48:24 UTC 
I have tried to access my whisperer plants sensors, but they do not show up in the Netro app. What do I need to do to rectify this?
View: 1868   Answer: 1

Door came off the unit

Michael Riley
Updated at 2025-02-19 19:52:51 UTC 
The door came off my spark 8 unit.  This made the electronics tape disengage from the base. How do I reattach that tape back into the slot.  I tried by hand but it seems impossible without detaching the motherboard and making more problems 
View: 1944   Answer: 1

Discount

darla
Updated at 2025-01-30 20:05:17 UTC 

I was offered a discount on January 24, 2025 on purchasing a New Netro Sprite 6 after mine failed.  I cannot get anyone to respond to my email.  I would like to proceed with the purchase.

Thanks,

Darla Carpenter

View: 2162   Answer: 1

API Error 4 - even with the example Device key

W4MSolutions
Updated at 2025-01-23 17:32:49 UTC 

We are using your API example, where ABCDEFG is the device key.
Using this example, we're getting the following error returned: {"status":"ERROR","meta":{"time":"2025-01-23T10:15:30","tid":"1737627330_uXNP","version":"1.0","token_limit":2000,"token_remaining":1993,"last_active":"2025-01-23T10:15:30","token_reset":"2025-01-24T00:00:00"},"errors":[{"code":4,"message":"Invalid sensor","params":{}}]}, 


It is the same when we use the actual device keys for our Sprite and Whisperers 2.


Could you please help understanding why we're getting the error number 4 "invalid sensor"?

View: 2277   Answer: 1

Netro offline

Brett Gardner
Updated at 2025-01-20 00:02:43 UTC 

As previous question, netro showing offline, but green on box. Not watering.

Have reset network and reconnected. Same.

Suggestions?

Hard reset?

Regards

Brett

View: 2282   Answer: 1

Pixie - Z1

Steve Inwood
Updated at 2025-01-16 10:10:53 UTC 

My Pixie Z1 has lost connection with hub. Have reset multiple times, just comes up with hub not detecting any deices. Have replaced batteries,

reset, with no luck. Is the unit faulty? Purchased on 6/6/23. Bought a Pixie 1 so have nothing to check Hub.Have reset that several times to.

View: 2155   Answer: 1

smart solar powered netro wifi tap timers

Trevor Pfeiffer
Updated at 2024-12-26 20:05:12 UTC 

Hi do you sell the smart solar powered netro wi fi tap timers direct,i need 20 thanks 

Trevor Pfeiffer

View: 2283   Answer: 1

Soil and weather

Stephen Brewer
Updated at 2025-04-29 10:06:27 UTC 
Topic: General

Hi I live in the uk and have chalk under a few inch’s of soil what setting on soil types is it most close to with you soil types and what the best weather options you have for uk weather

Regards

Steve

View: 1689   Answer: 1

Random Start

Mario Hardy
Updated at 2024-12-23 12:56:07 UTC 
I don’t know what’s going on my Netro spark randomly started on its own at night. 5 or 6 times a night for 1 min up to 10 min. Yesterday it ranned for nearly 90 minutes. How can I prevent this?  
View: 2266   Answer: 1

WISPERER 2 SENSOR DOES NOT MEASSURE HUMIDITY WELL

John BAIMAY
Updated at 2024-12-26 11:35:25 UTC 

One of the sensors started giving humidities form 80 yo 30% from one hour to another. I changed the position of the sensor and restarted various times. Now the sensor measures 0% humidity. 

Now after 4 days the sensor is dead. Tried charging and still doesn't start or show any life.

Any ideas to solve this problem?

Regards. 

View: 2306   Answer: 1

Zone photo

Russ McEvoy
Updated at 2024-12-28 11:29:31 UTC 

Hi,

I've just installed a Spark 16 and I'm playing with the settings. I tried out a zone photo that hasn't really worked but can't seem to find a way to delete it.

Can someone help please?

View: 2270   Answer: 1

Smart Sprinkler Controlle starts then stops

Nigel Briggs
Updated at 2025-01-10 23:15:31 UTC 

Hi.

My controller operates but many times, rather than executing the time setting. It just cuts out? 

I do have a sensor connected but I took it out of the ground to exclude wet soil feedback 

I'm guessing there is a parameter forcing the stops? 

Could anyone give me a direction where to look? 


Thanks 

View: 2199   Answer: 1