MET_SLT-FAIL

volkswagengm4 · 07-08-2022 08:05PM #1

Hi folks,

I recently upgraded my 3.6 hybrid Solis inverter to a 6kw hybrid. Unfortunately it is not recognising the voltage from the strings and not converting it to AC. I unplugged the mc4 +- string from the invertor and confirmed the fireman switch is working.

I have followed all the steps and settings of the the previous model but no joy. I have a 3.6kw poly battery. It worked perfectly 30 minutes before I swapped it out the invertors.

The version I'm on is 3D0037

Model number 3105

Hopefully someone on this forum has come across it before.

Thanks for your time

con747 · 07-08-2022 08:34PM

https://www.boards.ie/discussion/2058257873/met-slt-fail

Have you tried the Solis troubleshooting page? https://ginlongsolis.freshdesk.com/support/solutions/articles/36000308050-met-comm-fail-and-rs485-fail-troubleshooting

volkswagengm4 · 07-08-2022 09:45PM

Hi @con747

Thanks I previously reviewed that but does not help my situation.

graememk · 07-08-2022 09:49PM

The meter is a RS485 connection to the inverter, Did you use the meter that came with the 3.6 hybrid?

It could be a configuration error and looking for the wrong device id

volkswagengm4 · 07-08-2022 10:50PM

Hi @graememk

Yes I reused the same cable and meter from the 3.6. I would have thought there would be no configuration issue there. The meter can read the incoming from the grid , and the LCD screen recognises the incoming from the grid plus the battery supplementing the demand from the grid🤔

volkswagengm4 · 08-08-2022 05:11PM

Hi Folks,

Got it sorted out. Thanks for the input

con747 · 08-08-2022 05:13PM

https://www.boards.ie/discussion/comment/119446243#Comment_119446243

Post the solution for anyone else who might encounter the same issue in the future.

MaxManners · 19-09-2022 06:42AM

Solis Hybrid Inverter error message MET_SLT-FAIL

Hi Volkswagengm4, can you please publish the solution as I have just installed the above and have the same error message

Solar Cal · 13-10-2022 02:54PM

I have the same issue, has anyone resolved this?

con747 · 13-10-2022 04:07PM

https://www.boards.ie/discussion/comment/119739855#Comment_119739855

I just sent the OP a PM to ask if they would post the solution here.

benweston · 17-10-2022 09:58PM

I’ve just signed up to answer this question as I’ve fumbled through this error today.

you need to set the correct meter type, I wrongly assumed that the default setting of 1ph meter was correct but it isn’t, after installing and setting up the data logger the app actually gave a description as can be seen in the image.

I went to the advanced settings -> storage energy set -> meter set and changed the type to Eastron 1ph meter to match what I have installed and the alarm went away instantly and I have full info on my Home Screen about what power I’m using and where it’s coming from.

mswann35 · 29-01-2024 01:12PM

Thank you so much for that. I've been scratching my head for the last 24 hours on this one.

MET_SLT-FAIL

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