Mystery used Sol-Ark 12K Full Failure (Fixed itself)
- Thread starter AleksK
- Start date
Yeah I called and left a message, I may have to resort to email, I was just hoping some people here have dealt with something like this and maybe had an idea of what could of happened based on the given symptoms. I would much rather figure out the actual problem vs just throwing a very expensive board at it with no clue what actually failed and if it could have been fixed independently. Solark tech is not likely to know the nitty gritty details of the system. Someone who has disassembled/repaired any all in one Inverter might have useful insight
Shawn Hayes
Learning Everyday
A factory reset will reset KWh to 0. If you know the passcode.
Is the pass code unique not default?
Lt.Dan
Solar Wizard
That seems pretty poor. That's like being able to roll back the odometer of your car before selling it?? Lol
DIYrich
Solar Wizard
Battery powering screen is ok (low voltage). Pv powering screen means the connection from high voltage to low voltage is working. Maybe the high voltage bus to inverter is faulting. Lots of capacitors there, so not diy friendly repair.
Lol has anyone actually gotten the password on these forums? I didn't try but it could be 0000 for all I know.
Capacitors usually blow correct? Blown capacitors in my experience emit alot of smoke and residue and will smell bad in the box forever basically lol. Neither was detected inside this unit from basic opening of panel. Is there some other way the DC bus could fail less noticeable from over voltage? Also not so DIY, working with capacitors is fairly common for me.
RCinFLA
Solar Wizard
- Joined
- Jun 21, 2020
- Messages
- 3,565
A common mistake with the error codes you stated is someone accidentally connected an AC input source to AC output of inverter.
Easy to do if you put manual AC breakers from main panel to auxiliary panel to provide backup bypass for inverter.
Easy to do if you put manual AC breakers from main panel to auxiliary panel to provide backup bypass for inverter.
Like grid input wires into load output? It's possible... any idea what exactly gets damaged?
RCinFLA
Solar Wizard
- Joined
- Jun 21, 2020
- Messages
- 3,565
Usually the AC PWM IGBT H-bridge devices. They often take out the gate drivers also. If they short out, they can also blow out the battery side MOSFET's.
On SolArk's, these devices are buried below several layers of PCB boards on back heat sink requiring removing a couple hundred little screws.
This is picture of a MPP HF inverter that had AC input source hooked up to inverter AC output.
This is exactly the kind of info I was hoping for, Thank you!. Have people had luck finding replacement components and soldering new ones in?
Quattrohead
Solar Wizard
Don't laugh, is the on/off switch connected ?
Mine was reversed, the on/off part worked but not the light because its an LED.
Mine was reversed, the on/off part worked but not the light because its an LED.
Interesting, I checked most connectors but didn't closely examine the switch since it did glow blue when pushed.
zanydroid
Solar Wizard
Does this kind of “hundred of screws removed” mean that these inverters are not designed for easy servicing for some failures? What failures are easy to do a board swap for?
Also doesn’t a hybrid have to tolerate parallel output from PWM from grid? Or is the issue that it expects the grid to be isolated until qualify and sync is done, vs AC just rudely showing up without the protection of the transfer relay.
Wouldn't they just freewheel and passively rectify incoming AC into DC and charge DC bus capacitors? The IGBT body diodes in inverter H-bridge look like they form a bridge rectifier.
Shawn Hayes
Learning Everyday
That, I do not know?
Shawn Hayes
Learning Everyday
Trust me, I don’t want to share the thoughts I had, when I learned that…
zanydroid
Solar Wizard
What if the inverter is on and not frequency/voltage synchronized?
Then thing goes BOOM!
