JTK

Thanks Greenfields. I am going to give the Aux a bash. I think I may be able to get the ball rolling there. If not then I will get some automation going. Perhaps a relay or change over being driven

Spent some time with Sunsync support on the line. Seems Sunsync does not have an alternative to Aux/smart for this type of function. I have asked them to include it in a firmware as the hardware when you run a CT must support it. But its not there for now...

I am not following. There isnt a zero export + do not limit to load option? You can tick do not limit to load yes but I want to run my geyser on grid at night if I need to top up...

Hi guys. resurrecting an old thread here. I recently moved into a new place that has a 8kw sunsync. I come from a victron house and understood it infinitely. Anyways. I have my geyser connected with the CT on my grid feed. I have a question. So I have tried 101 settings but I cant get my geyser to work properly (the way I want. excess PV to geyser and no battery to geyser and grid to top up). It either feeds back into the grid all available PV or it uses my battery to top up PV to my geyser. When i have zero export +limit to load it obviously doesnt work as it keeps power inside to essential only. When I tick limited to home it tops up the PV to my geyser with battery. if i use solar export it dumps all available power out to grid irrespective of grid load. Thus actual exporting to eskom. What setting am I missing? I like the aux idea but would keep it the way it is if I am missing a setting. then Aux can sit on a gennie. Thanks

I am building a granny flat for my MIL and a maids quarters for our live in. I have an idea and wonder if someone have tried this.. I am planning to run two 100l geysers mounted vertically one above the other in portrait orientation. I will let them thermo syphen. I will hook up PV panels only to the bottom geyser with thermostat set to 65degrees and only connect the top geyser to grid with thermostat set to say 50degrees. I have played with the idea of controllers and others and arrived that I dont need any controller other than a timer for the top geyser. I do however need to switch the DC on the bottom element using the thermostat and this is where the tricky bit comes. I can use a DC rated contactor or I can use a mosfet. The mosfet is a lot cleaner as there is no chance for DC arc but such a mosfet is more than R1k :D Have you guys used DC contactors for the change over and do they cause issues?

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?