My 8kw Sunsynk inverter is installed and operated perfectly for the last week since it's on a test run. Yesterday we had loadshedding from Eskom and the inverter worked. The moment the power came on the inverter made a click sound and stopped giving power to the load (UPS).  In the photo the AC is off as i am running on By-pass. There is power from mppt and battery. The load shows 548 volts. Did something blow up?  I tried resetting but it gives alarm with code ID 2205264432. No fault codes though. Please help.

This looks weird. Would be interesting to know why the load voltage is 548V.

My Axpert had a similar problem (though not the voltage thats a weird one...)

The problem there was a borked relay. Though if it was installed a week ago it should still be under warranty shouldn't it?

 

I agree regarding to warranty. But why a barked relay. What causes it

 

On mine the relay didn't engaged, when I measured the output it would read 220V and thr inverter reported no problem but the second a load was present it dropped to zero.

So it turned out I was getting capacitive coupling throught the relay and thays why ot still measured an output voltage.

 

It could be anything that causes a relay to fail. Overvoltage. Some software bug that engages it over and over.

They are mechanical parts and have a finite lifetime

4 hours ago, Adagio said:

On mine the relay didn't engaged, when I measured the output it would read 220V and thr inverter reported no problem but the second a load was present it dropped to zero.

So it turned out I was getting capacitive coupling throught the relay and thays why ot still measured an output voltage.

 

It could be anything that causes a relay to fail. Overvoltage. Some software bug that engages it over and over.

They are mechanical parts and have a finite lifetime

But surely if it was constantly energised/de-energised you would have heard it. It's not like the relay only has a few operations before failure even if mechanical?

I have now spoken to probably everybody in Sunsynk and no one can give me some sort of answer. And do not think for one moment it is easy to book a warrantee claim for something that was not finally installed and subsequently not registered for its warrantee. Unfortunately for me I am still waiting for wifi. So, they cannot look up on the logger. They do not answer phones. Do not call you back. But it seems after I took the matter up with their chief operations manager that something is happening.

1 hour ago, Scorp007 said:

But surely if it was constantly energised/de-energised you would have heard it. It's not like the relay only has a few operations before failure even if mechanical?

Thats true yeah.