I have a three phase 12KW Inverex Nitrox(same as Deye) hybrid inverter which goes into a strange restart loop in the evening. The led lights on the inverter come on and off very few seconds. The screen does not turn on. It remains like that till the morning when sun comes out. This behaviour usually starts happening half an hour or so after PV stops producing any power.

I have no batteries installed. It is currently working as a grid tie inverter. I have attached some screenshots of my settings and inverter specifications. Any clue will be really helpful. Thanks

14 hours ago, Adil said:

I have a three phase 12KW Inverex Nitrox(same as Deye) hybrid inverter which goes into a strange restart loop in the evening. The led lights on the inverter come on and off very few seconds. The screen does not turn on. It remains like that till the morning when sun comes out. This behaviour usually starts happening half an hour or so after PV stops producing any power.

I have no batteries installed. It is currently working as a grid tie inverter. I have attached some screenshots of my settings and inverter specifications. Any clue will be really helpful. Thanks

The inverter to me works as it should. Before sunset it still detects voltage from the panels and wants to switch on. As soon as current is drawn from the panels the voltage collapses and it switches off as there is not enough voltage and it remains off until enough volts and current the next day. 

It senses there is not enough power and does not switch on the screen. 

This is how a grid tied inverter works when there is no battery to power the inverter to have the screen on. 

Edited April 19, 20242 yr by Scorp007

4 minutes ago, Scorp007 said:

The inverter to me works as it should. Before sunset it still detects voltage from the panels and wants to switch on. As soon as current is drawn from the panels the voltage collapses and it switches off until there is not enough voltage and it remains off until enough volts and current the next day. 

It senses there is not enough power and does not switch on the screen. 

This is how a grid tied inverter works when there is no battery to power the inverter to have the screen on. 

But in absence of battery, grid power should compensate. I am sending you the latest picture of the front panel right now. It shows power being used from the grid. But after a while, it will go into that loop.

Link to a video I made of the inverter in that state of restart loop.

https://jmp.sh/s/cP0vWD0luLdixcGlCOUL

Edited April 18, 20242 yr by Adil

2 hours ago, Adil said:

Link to a video I made of the inverter in that state of restart loop.

https://jmp.sh/s/cP0vWD0luLdixcGlCOUL

What must the grid do. You rather use it directly. The grid tied has no battery to charge to provide power when the power fails. It only works when there is PV and grid. 

Edited April 18, 20242 yr by Scorp007

3 hours ago, Scorp007 said:

What must the grid do. You rather use it directly. The grid tied has no battery to charge to provide power when the power fails. It only works when there is PV and grid. 

I think I have some deficiency in my understanding of how grid tie inverters work. When the PV goes out in the evening, grid tie inverters shutdown? I thought they will still work with the grid power and only power off during load shedding.

1 hour ago, Adil said:

I think I have some deficiency in my understanding of how grid tie inverters work. When the PV goes out in the evening, grid tie inverters shutdown? I thought they will still work with the grid power and only power off during load shedding.

Grid tied adds power generated from PV in parallel with the grid and only works when you have grid and PV. 

The power from PV will be used before grid is used. If you select no export then the extra PV is lost. If you have a 2kW load and PV generates 1kW then only 1kW is taken from the grid. The grid thus supply what you are not generating during the day from PV. 

So that means that the inverter itself is powered only by PV? Grid has no ability to power the inverter in absence of PV?

I understand that the inverter will not work, i-e not supply power to the load, when there is no PV but it should at least not go into a start stop loop while the grid is present.   

Edited April 19, 20242 yr by Adil

3 hours ago, Adil said:

So that means that the inverter itself is powered only by PV? Grid has no ability to power the inverter in absence of PV?

I understand that the inverter will not work, i-e not supply power to the load, when there is no PV but it should at least not go into a start stop loop while the grid is present.   

As I indicated earlier it can perform no function by being on and consuming about 80W of power for 14hrs per day when no PV. 

It is powered by the grid but only when PV is present. 

4 minutes ago, Scorp007 said:

As I indicated earlier it can perform no function by being on and consuming about 80W of power for 14hrs per day when no PV. 

It is powered by the grid but only when PV is present. 

I really appreciate your help. It made things clearer to me. At least I can say that there is no problem with the inverter. Thanks

4 hours ago, Adil said:

I really appreciate your help. It made things clearer to me. At least I can say that there is no problem with the inverter. Thanks

Pleasure. The best use for your current way is to run loads during the day from PV. Then even better is to have an export arrangement with the utility supplying your grid. 

On 2024/04/18 at 6:27 PM, Adil said:

I have a three phase 12KW Inverex Nitrox(same as Deye) hybrid inverter which goes into a strange restart loop in the evening. The led lights on the inverter come on and off very few seconds. The screen does not turn on. It remains like that till the morning when sun comes out. This behaviour usually starts happening half an hour or so after PV stops producing any power.

I have no batteries installed. It is currently working as a grid tie inverter. I have attached some screenshots of my settings and inverter specifications. Any clue will be really helpful. Thanks

 

On 2024/04/18 at 6:27 PM, Adil said:

I have a three phase 12KW Inverex Nitrox(same as Deye) hybrid inverter which goes into a strange restart loop in the evening. The led lights on the inverter come on and off very few seconds. The screen does not turn on. It remains like that till the morning when sun comes out. This behaviour usually starts happening half an hour or so after PV stops producing any power.

I have no batteries installed. It is currently working as a grid tie inverter. I have attached some screenshots of my settings and inverter specifications. Any clue will be really helpful. Thanks

AslamoAlaikum! 
Hello ! 
Brother i am facing the same problem.would you like to share me that have to solve the problem or not ? 

As discussed above, it is not a problem. The best solution is to attach batteries. Otherwise, it still works as a grid tie inverter during the day. 

I have a newly installed Deye compatible (Inverex) hybrid 12kW inverter connected to new lead-acid batteries (4 x 12V 230AH) and 570W x 26 solar panels. This setup is installed 3 days ago. The inverter exhibits unpredictable restart behavior under conditions of grid going completely off and on:

• Sometimes, it restarts when the AC grid power goes completely off. In this state the batteries are fully charged. Once the inverter restart completes it transfers to batteries for load. After a while it turns off non-essential load and keeps running the essential load.
• In other instances, the inverter does not restart when the power goes off but does so 10-15 seconds after the grid power comes back on. During that time, AC power goes off and runs smart load, until batteries reach certain voltage at which point it turns off only the non-essential load and keeps running the essential load. In this condition, when the AC power comes back on, it waits for some time to connect/sync with grid and then restarts after which it again takes some time and then connects/syncs with the grid just fine.

This strange behavior is not always exhibited by the inverter. Sometimes either behavior is exhibited or no behavior at all. We have tested every iteration today and we could not conclude what the problem is. At one point we believed that there was a short circuit somewhere in out internal wiring, for which we turned of all the load that we suspected could have caused the problem. We have checked all the wiring connections to ensure that no wiring is loose.

The guy that installed this setup even factory reset the inverter today.

After trying every iteration, the installer has recommended that the inverter is taken to the manufacturer lab for further diagnosis.

The voltage on 2 of the phases is between 233-235 volts and the 3rd phase is between 239-250 volts. This does not change drastically.

Could there be anything in the settings that might be causing this strange behavior. This all happens when AC grid goes off and on. In the day time the inverter prioritizes the taking energy from the solar panels as much as we need which is at minimum 2.5 kW and at max under around 3.5kW.

Is the inverter putting out any faults? Anything showing on the Alerts page? Have you connected your three phase grid wires to the inverter properly like L1, L2 and L3? These have to be in the correct order to avoid any phase related issues. Make sure they are connected as they are coming from WAPDA. 

Make sure that Zero-export Power in System Work Mode is set to at least 20W, preferably 40W.

Attach your settings for System Work Mode and Battery.

On 2024/08/18 at 3:40 PM, Adil said:

Is the inverter putting out any faults? Anything showing on the Alerts page? Have you connected your three phase grid wires to the inverter properly like L1, L2 and L3? These have to be in the correct order to avoid any phase related issues. Make sure they are connected as they are coming from WAPDA. 

Make sure that Zero-export Power in System Work Mode is set to at least 20W, preferably 40W.

Attach your settings for System Work Mode and Battery.

The installers verified all cable connections and made sure nothing is loose.

Attaching settings one by one.

On 2024/08/18 at 3:40 PM, Adil said:

Is the inverter putting out any faults? Anything showing on the Alerts page? Have you connected your three phase grid wires to the inverter properly like L1, L2 and L3? These have to be in the correct order to avoid any phase related issues. Make sure they are connected as they are coming from WAPDA. 

Make sure that Zero-export Power in System Work Mode is set to at least 20W, preferably 40W.

Attach your settings for System Work Mode and Battery.

 

On 2024/08/18 at 3:40 PM, Adil said:

Is the inverter putting out any faults? Anything showing on the Alerts page? Have you connected your three phase grid wires to the inverter properly like L1, L2 and L3? These have to be in the correct order to avoid any phase related issues. Make sure they are connected as they are coming from WAPDA. 

Make sure that Zero-export Power in System Work Mode is set to at least 20W, preferably 40W.

Attach your settings for System Work Mode and Battery.

 

On 2024/08/18 at 3:40 PM, Adil said:

Is the inverter putting out any faults? Anything showing on the Alerts page? Have you connected your three phase grid wires to the inverter properly like L1, L2 and L3? These have to be in the correct order to avoid any phase related issues. Make sure they are connected as they are coming from WAPDA. 

Make sure that Zero-export Power in System Work Mode is set to at least 20W, preferably 40W.

Attach your settings for System Work Mode and Battery.

 

On 2024/08/18 at 3:40 PM, Adil said:

Is the inverter putting out any faults? Anything showing on the Alerts page? Have you connected your three phase grid wires to the inverter properly like L1, L2 and L3? These have to be in the correct order to avoid any phase related issues. Make sure they are connected as they are coming from WAPDA. 

Make sure that Zero-export Power in System Work Mode is set to at least 20W, preferably 40W.

Attach your settings for System Work Mode and Battery.

 

3 minutes ago, Saad Ali said:

The installers verified all cable connections and made sure nothing is loose.

Attaching settings one by one.

 

On 2024/08/18 at 3:40 PM, Adil said:

Is the inverter putting out any faults? Anything showing on the Alerts page? Have you connected your three phase grid wires to the inverter properly like L1, L2 and L3? These have to be in the correct order to avoid any phase related issues. Make sure they are connected as they are coming from WAPDA. 

Make sure that Zero-export Power in System Work Mode is set to at least 20W, preferably 40W.

Attach your settings for System Work Mode and Battery.

 

On 2024/08/18 at 3:40 PM, Adil said:

Is the inverter putting out any faults? Anything showing on the Alerts page? Have you connected your three phase grid wires to the inverter properly like L1, L2 and L3? These have to be in the correct order to avoid any phase related issues. Make sure they are connected as they are coming from WAPDA. 

Make sure that Zero-export Power in System Work Mode is set to at least 20W, preferably 40W.

Attach your settings for System Work Mode and Battery.

 

There is nothing in inverter logs.

Hello. Sorry that I'm opening again this old topic,but I have the same issue with restarts of Deye 12kW 3phase hybrid inverter without battery (not yet connected). And genetally I would agree that grid tied inverter is not working after sunset. But, and there is huge but... I have two inverters, one is 3phase Solaredge and after sunset it stays in standby mode, so it's still powered by grid. You can log in to it after sunset and check all the data. In case of Deye, it is not possible, it simply restarts itself every 20 second. And this "but" is a fact that sometimes it switches off with constant restarts just after sunset, sometimes hours afters sunset and sometimes it's working 24h without any issues. So what is happening here??

Hello, sorry that I'm opening this old topic, but I have the same issue with my Deye 12kW 3phase hybrid inverter without battery (not yet connected). In general I would agree that grid tied inverter shuts down after sunset, but there is but, a huge but... I have two inverters, first that is 3phase Solaredge, that after sunset shuts down to stand by mode, but you can still log in to the app/inverter and check all the data. And second one, mentioned Deye hybrid inverter that restarts itself. And here is this "but"... Sometimes it shuts down and restarts just after sunset, sometimes hours after sunset, sometimes it's working 24h. So it cannot be related to not having proper voltage form PV/grid tie. So what is happening here and why it is not at least in stand by mode as Solaredge inverter?