Unless I'm missing something, my inverter seems to be giving incorrect pv info. 

At the time of the photo the following reading were given:

Amps 33

Volts 93

So it should be recording 3000watts? But it only says 1811watts. 

This in turn throws out all my solar assistant reading... 

 

Has anyone else had this problem and found a solution? 

7 hours ago, Sam79 said:

Unless I'm missing something, my inverter seems to be giving incorrect pv info. 

At the time of the photo the following reading were given:

Amps 33

Volts 93

So it should be recording 3000watts? But it only says 1811watts. 

This in turn throws out all my solar assistant reading... 

 

Has anyone else had this problem and found a solution? 

The 33A reading is that not related to the 48V battery current and not related to the 93V from PV? 

Yes, the display usually shows battery-side amps. I think there may be another data page on some models with the PV current. In any case, your app is showing 18.9 A solar current, and 18.9 x 93.0 = 1758 W. The PV power was probably fluctuating between some of the measurements, hence the small discrepancy.

35 minutes ago, Coulomb said:

Yes, the display usually shows battery-side amps. I think there may be another data page on some models with the PV current. In any case, your app is showing 18.9 A solar current, and 18.9 x 93.0 = 1758 W. The PV power was probably fluctuating between some of the measurements, hence the small discrepancy.

I thought this to, but my pv will otfen be running a 2kw load and charging my battery at 600w with a pv reading of only 1.8kw.

Also the battery amps is on a different screen. 

A bit like this:

41 minutes ago, Sam79 said:

A bit like this:

Yeah, that's hard to explain as just rounding errors and estimations. There seems to be some 500 W (440 W plus losses) coming from thin air. Are the load and/or solar power levels jumping around a lot at this time?

No, was pretty stable. This is last pic is a bad example. Normally my pv input indicates less. Ie pv input 1800w which is powering load of say 2000w annd charging the battery at 800watts...

Like this

Is that a single inverter connected to solar assistant ? 

We had a similar issue , but that was because solar assistant doesn't pick up mpp2 values unless directly connected to each inverter. Having a usb cable to each sorted that out. 

Edited August 7, 20232 yr by abd7

Yep it's a single Kodak og plus 5.48. 

Inverter records the tje correct amps and voltage, but seems to calculate the watts incorrect. Then solar assistant seems to take the watts figure from the inverter and voltage and work out the amps...

 

Wouldn't mind, but it throws out all the recording of outputs. Is anyone else having the same issue? I'm using the usb to mini usb cable wondering if the other cable from inverter to raspberry pi will make a difference?? 

Sam79, I've been monitoring my Kodak King with WatchPower. It always shows that PV wattage is up to 25% less than Active wattage, and even goes so far as to show a drain (amps) from the batteries. And yet the battery voltage increases, i.e. the batteries are actually charging... I'm guessing that the firmware in the Kodak is rubbish... to prove it further, I plugged in a different Axpert-based inverter, and got the expected PV readings. 

15 hours ago, JohnDM said:

I'm guessing that the firmware in the Kodak is rubbish... to prove it further, I plugged in a different Axpert-based inverter, and got the expected PV readings. 

As a point of interest, do you know the Kodak King's firmware version?

Coulomb,

Versions are:

U1=72.02, U2 = 02.83.

To the credit of Sengen, they have been in contact with me to try to address the issue. 

The downside is that they want the inverter for some weeks to diagnose. Not an option for me, as I'm off grid.

I will post whatever solution is found.

7 hours ago, JohnDM said:

Versions are:

U1=72.02, U2 = 02.83.

As far as I know, those are the latest firmware versions, or at least quite recent. 

Hi.

Same problem.

Replaced father-in-law's kodak king with new one bought in June 2023(something melted inside that is not visible). Everything kept exactly the same including the multisibcontrol.

Depending on the workload there are discrepancies. Notice the graph for pv, load and battery. I do have trust in the pylon bms figures. If you take the differences between inverter battery watts and bms battery watts you will find that it will correlate with the missing pv watts.

At some point at lower production values, I did notice a point where the values seem in line with actuals. Unfortunately, I do not have a screenshot of it at the moment. The inverter display panel gives the same incorrect figures.

Sam79- Any luck?

I've changed to a Solis s6 pro and I can confirm that this a totally different class of inverter. 

My biggest concern with the Kodak unit was that it had on occasion tried to over charge my battery.. The miss reading of pv has a larger impact than most think.. 

Hi

Yes, I'm not familiar with the S6. The specs do look very good and similar in functionality as the Sunsynk and Deye that I know and that makes it very attractive. Smartload/Aux is underused in installations.

Luckily, I have not experienced voltage issues yet with three king installations. For peace of mind, I do though limit charge at 52.5V in case it does also overshoot.

 

I would have gone with sunsynk if it wasn't for my panels being the low volt high Amp 600w panels. The 5kw S6 can handle 16amp vs the 13amps of the sunsynk... 

Solis cloud seems a bit complex but hopefully in time I'll get able go get to grips with it.. The operation manual is very limited with lots of undocumented features. But the other big plus with solis is they offer a swop out unit on warranty claims and so far the support has been fantastic.. Helped with battery pinout cable and feedback settings.

Has there been a solution to the wrong PV readings? My Kodac under reads the PV power by 38% most of the time.