JTK

no worries. figured this one out..

I have recently moved in to my new house. It has an older Sunsync 8kw invertor with serial number starting with 22. When I try run firmware update on the app I recieve a warning that I need to contact support for serials starting with 22 and older. Who is this "support"? Anyone local? Thanks!

OK. I will only have my funds come lose when my sold(only sold now) house registration goes through. Therefore I will go fetch my battery bank at my old house and use at the new house. Sorry another question. What comms cable for the Pylons with the Sunsync. Bear in mind I dont hav"the cables that came with" I already converted my Pylon comms cable to work with my Victron setup and the other house cable is Sunsync to shoto. I need a cable for Sunsync to UP5000's Anyone that can perhaps help with a quick pinout for me to crimp? I was going to wait but waking up to no power (after the power went out last night) just made me take this decision on short notice

Do I need any special comms cables? Or just use the one that comes with the battery?

Thanks guys! This helps a lot!

I am purchasing a house and it has the above mentioned invertor and 7e 540w panels on one string. I believe the sunsync has duel MPPT's and was wondering if they really are separate. As in can I put another string on the invertor that is not the same panel spec as the existing one? Also I believe I could add one 540w panel to make an 8 panel string and still be well within the max V. I know one should not mix and match panels but getting hold of a 540 to put in there is not so easy. I cant imagine there will be an issue with any panel as long as its current throughput is higher or equal to the panels in series already? Also the second string. Help me understand. will there be issues if I just use 8 panels of higher wattage? Also, I am thinking of putting a Dyness Powerbrick Max in as the storage. That which is there is not adequate and will need replacing. Any issues with comms between Sunsync and Dyness?

OK. I am going to leave the systems where they are and just add to the new installation... To many things that can go wrong during removals and swaps etc..

I have the batteries where I am now. WIll want to take them with. If not all of them maybe just two UP5000's. can always add again to that. that will leave 3 us3000's

thanks. yes also feel I want to take it (victron kit) with. I am comfortable with my setup. its never failed. been running a long time and just does its thing...

wont be taking the panels with. I have 12 550's and new house 6. 550's. I will just add another 6 there...

I have a dual Victron Multi II 3kva setup with 250vMPPT and a stack of pylons. I recently purchased a house and will lily have the opportunity to move my setup before my previous house sells. The new house has a sunsync 5kw. I am seriously considering taking my existing setup and just swapping it. Any ideas/Suggestions? Existing setup is mounted on a wooden panel so should be "fairly" simple to swap.

yeah. you can pick up new ones for less than 9k now. almost fell on my back when I saw that. insane how cheap they are now

Specs added. sorry.

Hi all, selling some items on my side. Located in Eldoraigne, Centurion. Item: 150/100 Victron MPPT Age: Same age as Panels Price: R6k Condition: Used - good Location: Centurion / Eldoraigne Reason: Rearranged panel layout for high voltage Item: CCGX with wall mount box Age: Not sure Price: R4k Condition: Used - good Location: Centurion / Eldoraigne Reason: Not in use anymore. using Venus GX

thanks guys. yes it will work but its not ideal. Even victron's spreadsheet recons I cant go more than 10 panels with the 150/100. Anyways. there is still some time

so this still leaves the question. 6 strings of 2x550 panels worth it on a 150/100. getting a 250/100 will add R10k to the bill... ps: no space for more than 12 panels on the roof. which there was else keeping would be a no brainer

So I have a strange question.. Currently I have 12 330watt Canadians on my roof. These are running through a Victron 150/100 mppt in 4 strings of 3. Canadians have a VOC of around 40v if I recall correctly. So in theory its around 120V voc. I am starting to desire more power during the day as my consumption is going up with AC's etc in the house. Anyways. I want to replace my panels with 550watt panels. Can get Longis for a good price. The Longis however have a 49v VOC making 3 in series x 4 a no go as it is maxing out the MPPT on VOC and will definately cross the threshold on a cold morning. There are thus then two options.. I buy 12 panels and have 6 strings of two panels. I dont like this as at best I will have around 80v operational which is rather low... Or I buy 9 longis and run 4 strings. Each string two longi's and one Canadian which will make VOC around 140v. I have been advised perhaps not a good idea... What do you guys think? The only alternative is buying a 250/100 and just run 3 strings of 4. But did not really want to spend that on top.

Reviving.. I am starting to think the invertor is giving charge at to high a voltage and the Pylons go into "protection mode". Perhaps the invertor loses comms for a moment and provides charge based on what it believes the batteries want which is too high caugint eh batteries to block charge?

proved again. reconnected at 15:30 and battery charged full without issues. Voltage below those max readings of 270v...

Thanks. Help me understand please how I would isolate them? I would have thought they were?

I agree. hence I think it is a pull down resistor that has gone open circuit. It probably is floating voltage because nothing is attached and nothing more or less. My issue is really that things go pear shaped when we seem to reach a certain level of PV output/voltag which is way below what the invertor should be able to handle

@Buyeye: So yes. the 550V seems to be some sort of open circuit volt. If the invertor is on and you push the fuse in it sits at 260 odd. The panels cant deliver 3.5kw. Not even with a victron MPPT let alone a growatt built in. 6 500watt panels... Normally sits around 1.7kw. So did it again this morning. sun comes up starts charging. makes it to around 86% by around 10:30 and then batteries stop charging invertor crashes. it will work again from around 3pm I am pretty sure...

OK. plot thickens... it is happy to work and charge unless it is middle of the day. So here goes. I did some trouble shooting... It is as if the invertor "crashes" when the above presents itself. As in I can pull the PV fuse but it will keep on saying it is charging from PV. Clearly nothing is happening... 1. The is a ES so theoretically is should handle 450V input. 2. When PV voltage goes to around 265/270 v the battery stops taking charge and the symptoms as in first post presents itself. 3. I ran the invertor in standby mode with eskom attached and PV fuse in. The voltage on the PV side went to 550v. Assume this is open circuit and massively (impossibly) high for 6 panels. Inverter needless to say error'd with 08. (Buss voltage too high) 4. I pull the PV fuse so the PV voltage is not tied down. It starts charging on eskom and then PV voltage floats around and as soon as it goes to say around 265/270v then battery just stops charging. 5. As soon as PV voltage is below 250v is starts being happy and operates as intended. So my questions... Seems PV input is causing the issue. Maybe it it should be bound somewhere. Perhaps with a pull down resistor on the motherboard? Maybe this resistor is open circuit? It never has given this issue. But is seems to float around when PV is disconnected and inverter runs on battery and AC. Also why all of sudden does it not like voltage say over 270v? I cant imagine it wasnt that high on my dad's. The units are in same complex right next to each other with same angle to the sun. Only immediate solution rather than stripping I can think of is to split panels in 2x3?

Hi guys, sitting stumped this side. I have a Growatt 5000ES HMV hooked up to two Pylon US3000c's and 6 panels. Invertor sees Pylons and reads charge % and BMS have been working without fail, it appears. This setup was running perfectly fine the past two years in my dad's house. I moved it to my brother in law. Same kit and the strange behavior starts. The invertor will charge the batteries for a bit and then the batteries will stop taking charge. The invertor however is still spinning fans and says its dumping x watts into the batteries. reads the amps and everything. The software on my phone is even stranger. On the invertor the PV may say 1750w. The software will say say 2100w PV and the charge into the battery will say perhaps 3500w. Utility input breaker off so there is no AC supplied at this stage. Needless to say the batteries dont charge further. They sit at a %. the invertor keeps delivering charge as if the battery BMS is saying it needs charge. Battery indicator lights are not flashing though. And everything stays cool. Invertor end batteries. So I assume there is no amps flowing even though the invertor says there is... No errors on the invertor. It believes all is well... anyone have any ideas?

Was aware of this for LiPo. did not know it was for LiFe also? as in a Mobile you receive is half battery.. that is not a mistake. it actually gets charged to 50% before shipping..