Hi, I wonder if anyone can perhaps help me. Ive had two sunsynk 5kw inverters installed in parallel about a month ago and the grid usage recorded by the inverters seems to be inaccurate. The usage recorded by my mains meter is about double what the grid input recorded by the inverter. The slave inverter records 0 input and im not sure if thats the problem where the half usage is missing or if just the master records all the grid usage and there is another reason the grid input is inaccurate. I saw this while trying to search for the problem yesterday and am unsure if maybe this is the problem. https://www.sunsynk.org/post/eastron-meters-do-you-need-one . I have been trying to sort it out with the installer since 2 days after the install when I first noticed it. I sent them the link this morning. The reply I got is “it is a cloud problem and I will need to contact Sunsynk. The system is working 100%” . While i agree it is working and the unit is not dead, not recording the usage correctly is not working 100% and since its never recorded correctly and I pointed it out a few days after installation the installer should sort it out under warranty. It is not jut inaccurate on the app but on the inverters themselves. I have turned off eskom my side to ensure no one is connected to my meter and that is where the usage is going. Does anyone have any ideas it would be hugely appreciated. Many thanks.

11 minutes ago, Sun88 said:

Hi, I wonder if anyone can perhaps help me. Ive had two sunsynk 5kw inverters installed in parallel about a month ago and the grid usage recorded by the inverters seems to be inaccurate. The usage recorded by my mains meter is about double what the grid input recorded by the inverter. The slave inverter records 0 input and im not sure if thats the problem where the half usage is missing or if just the master records all the grid usage and there is another reason the grid input is inaccurate. I saw this while trying to search for the problem yesterday and am unsure if maybe this is the problem. https://www.sunsynk.org/post/eastron-meters-do-you-need-one . I have been trying to sort it out with the installer since 2 days after the install when I first noticed it. I sent them the link this morning. The reply I got is “it is a cloud problem and I will need to contact Sunsynk. The system is working 100%” . While i agree it is working and the unit is not dead, not recording the usage correctly is not working 100% and since its never recorded correctly and I pointed it out a few days after installation the installer should sort it out under warranty. It is not jut inaccurate on the app but on the inverters themselves. I have turned off eskom my side to ensure no one is connected to my meter and that is where the usage is going. Does anyone have any ideas it would be hugely appreciated. Many thanks.

Switch on a low load. Switch the grid off and post the system stats screens for both inverters prior to grid off and while the grid is off. From this one might pick up the reason. 

This is the screen that shows all the instant values from grid PV battery and UPS load. 

Don't want to start guessing without readings. 

Edited June 25, 20242 yr by Scorp007

4 hours ago, Scorp007 said:

Switch on a low load. Switch the grid off and post the system stats screens for both inverters prior to grid off and while the grid is off. From this one might pick up the reason. 

This is the screen that shows all the instant values from grid PV battery and UPS load. 

Don't want to start guessing without readings. 

Ive got no eskom power due to cable fault so will post the screenshots as soon as I can. Thank you for the reply.

22 hours ago, Scorp007 said:

Switch on a low load. Switch the grid off and post the system stats screens for both inverters prior to grid off and while the grid is off. From this one might pick up the reason. 

This is the screen that shows all the instant values from grid PV battery and UPS load. 

Don't want to start guessing without readings. 

Hi, I hope im posting the correct values as its a bit new to me and im still figuring out. If I havnt Ill do it again. Ive attached photos of my meter reading for today showing 5kwh and the inverter input showing half at 2.5kwh. Im not sure if ive used the correct parameters but its with grid on and then off for both inverters. Thanks its really appreciated.

 

 

3 hours ago, Sun88 said:

Hi, I hope im posting the correct values as its a bit new to me and im still figuring out. If I havnt Ill do it again. Ive attached photos of my meter reading for today showing 5kwh and the inverter input showing half at 2.5kwh. Im not sure if ive used the correct parameters but its with grid on and then off for both inverters. Thanks its really appreciated.

I used the wrong term and screen name. The picture below is the correct screen that might help. 

Post for both inverters. 

53 minutes ago, Scorp007 said:

I used the wrong term and screen name. The picture below is the correct screen that might help. 

Post for both inverters. 

Thanks I hope this is correct. Inverter 1 and 2 with ac light showing and 1 and 2 with ac off. Not much sun so hope it shows what needs to. Thanks a million.

 

 

2 hours ago, Sun88 said:

Thanks I hope this is correct. Inverter 1 and 2 with ac light showing and 1 and 2 with ac off. Not much sun so hope it shows what needs to. Thanks a million.

 

 

Thanks. All looks OK for me. All in place. 

May be our other members can give their take on this problem. 

3 hours ago, Scorp007 said:

Thanks. All looks OK for me. All in place. 

May be our other members can give their take on this problem. 

Is it possible the ct coil is installed in the wrong place or too far from the main DB board? The inverters are about 15-20 meters from my main db

Seems to be a recurring theme with parallel Deye/Sunsynks.

2 hours ago, P1000 said:

Seems to be a recurring theme with parallel Deye/Sunsynks.

Just stupid questions. When using inverters in parallel am I right that only 1 CT is used as the grid input? 

Will the system flow chart show a CT on each inverter the pics or will it only show on the master? 

Will the slave also show a grid input? 

Edited June 27, 20242 yr by Scorp007

6 hours ago, Scorp007 said:

Just stupid questions. When using inverters in parallel am I right that only 1 CT is used as the grid input? 

Will the system flow chart show a CT on each inverter the pics or will it only show on the master? 

Will the slave also show a grid input? 

I only have 1 ct coil and it was installed in the inverter where it unscrews. They moved it to the new ac db box where the switch is to move it up for eskom or down for solar. The slave shows zero input. Moving it made no difference but its far from the main db.