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12kW Sunsynk with 18 x 575W LONGi Solar PV modules & FreedomWon 15/12


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Just loose, they weigh 35kg each. When they fully loaded they are not going to disappear anywhere. It's non invasive because the roof has a water proof rubber membrane that needs attention periodically so the blocks need to be able to be disassembled for future maintenance if needed.

Edited by Steve87
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2 minutes ago, WannabeSolarSparky said:

The jacuzi, pool pumps, all those aircons, and probably a sauna or 2 inside. I think that is quite possible when you have enough cash to run or even own all that 🥰

true - i must do a run at my upgraded system and see what we can pull with everything on....

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  • 3 months later...

So the Sunsynk 12kW inverter went dead after 3 weeks of use. This then took 6 weeks to repair covered under warranty. The owner knows he needed to expand his inverting power so decided to buy another 12kW Sunsynk. Sunsynks report was a faulty board & replaced offensive board. 

Then purchased another 15/12 FreedomWon battery. Today was another chapter in the evolution of this plant. So we added a few more circuits to the essential loads & paired the 2 inverters together, the new & old machines as one 24kW machine & now 30kWh of Lithium Energy Storage. 

 

Screenshot_2023-07-11-19-50-48-033_com.miui.gallery-edit.jpg

Screenshot_2023-07-11-19-49-36-439_com.miui.gallery-edit.jpg

Screenshot_2023-07-11-19-50-23-162_com.miui.gallery-edit.jpg

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11 minutes ago, Steve87 said:

 

So the Sunsynk 12kW inverter went dead after 3 weeks of use.

 

Do you think running very high loads in bypass mode contributed to the premature failure? Is that what convinced the owner to add a second inverter?

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No, actually after commissioning quite a few Sunsynks I have noticed a certain startup sequence of relays clicking etc. I think we just got a lemon. This particular machine on first startup was not regular. I thought it was maybe at first sight just a glitch. But in fairness it worked very well for the 3 weeks then died & had a very bad burnt plastic smell. 

I removed it & did the RMA with Sunsynk. They said a faulty board replacement I took it on face value. We have run another new machine with the same high passthrough loads & it's has run very predictably & has just buzzed along nicely. Even today with the repaired machine back, the machine behaved like I am used to. 

Out of approximately+-40 odd machines I have had 2 RMAs and both behaved very weirdly from the first startup. Touch wood 2 lemons in this number is not bad stats. The 2nd one is a 8kW machine was a Dead on arrival. Still pending the Sunsynk RMA. I refused a repair & will request a refund. Customer has a new unit at my expanse already. 

My opinion is that they are good machines but the quality varies across the models. The 16kW MAX is in a league of its own, the quality levels of that machine is unparalleled from what I have seen so far. 

But the Sunsynk/ Deye journey continues. I would really like to get my hands on a Solis Hybrid 8kW soon. Fingers crossed 🤞

Sorry to answer your original question, I advised the client that his power requirement is at least 3 machines in parallel as a final design footprint from the start. This home has some very large loads. 2 massive heat pumps in 2 x 1kL tanks. I have seen the non essentials loads get really large. This customer has accepted that this is a journey & so far he has been satisfied with the Sunsynk product & the RMA process. But I must admit 6 weeks for a repair is a little too long in my humble opinion. Many ppl won't accept this nor will have the deep pockets or appetite to buy a replacement. 

 

Edited by Steve87
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No doubt you purchased from Heyrolds? They are a serious supplier, I had issues with an ATESS ATS 400A contactor replacement under warranty from a supplier that was not wanting to honour our RMA. Heyrolds actually was unique in that they helped put us in touch with ATESS directly. New part arrived in 3 days. 

Simply put they go above & beyond. I am not affiliated to them at all but was very impressed by the team there. You need this type of support because things can go wrong & then where you chose to procure is vitally important.  

Edited by Steve87
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9 hours ago, Steve87 said:

This home has some very large loads. 2 massive heat pumps in 2 x 1kL tanks

These bigger heat pumps are normally problematic with startup currents very high due to them using scroll compressors for efficiency. You get the models now with soft start but the older version of heat pumps will demand their pound of flesh for any standby system.

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