question

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Looking up error code 11

https://www.victronenergy.com/live/ve.bus:ve.bus_error_codes

Error 11 - Relay Test Fault - Installation error or possibly relay failure

This error only applies to the MultiGrid, MultiPlus-II, EasySolar-II and other inverter/chargers with a dual backfeed relay. As part of grid-code compliance; the device tests verifies that its internal relays function properly.

The relays are tested when a grid code is selected in VEConfigure. When the grid-code is set to None, the tests are not performed.

When VE.Bus error 11 shows, either the back-feed relay test, ground relay test, or measurement redundancy tests has failed. The tests are automatically performed every time before connecting to mains.

The three root causes of the error can be (from most common to least common):

1) In most cases, when you see Error 11, its due to an installation error:

• Please verify that the neutral is connected to earth on the supply side. In many countries this is done by the utility in the transformer cabinet (a TN network).

• Line should be connected to the corresponding Line input on the inverter/charger, same for Neutral. A swapped connection results in Error 11.

• There should be no external connection between N-out and GND

2) For Australia: contact your distributor.

3) Hardware defect; contact your distributor for a replacement.

Detailed diagnosis of Error 11

After updating your VE.Bus inverter/charger to firmware 454 or higher; and running Venus OS v2.23 or later, a detailed VE.Bus Error report can be seen in the Venus-device menu. The information shown is:

It shows:

• A six digit number; which contains all the details

• An error ID (#16 for example). Note that this does not count the the number of VE.Bus errors; its just a unique ID that can help recognizing that a new error has occured.

• Flags

• The failed step; it counts backwards: step 9 → 8 → 7 and so forth.

Common causes:

• Failing step #8: check that line and neutral have not been swapped. Unlike non-grid code installations; line and neutral need to be wired correctly.

• PE2 open error: check that AC-out Neutral is not wired to Ground. Short circuiting them is not allowed. Also, check that there is no leakage between Neutral and ground, for example because broken consumer. Start by disconnecting all loads: open all the circuit breakers.

• AC0/AC1 mismatch and UMains error: there has been a fix for that in VE.Bus inverter/charger firmware version 455.

In all other cases, contact your Victron representative for support. Please provide a photo of the error; and otherwise at least the 6 digit number at the top.

The report is found by navigating to the Device list (top level menu), then going in to the Multi or Quattro inverter/charger page, then to the bottom, Alarm Status, then to the bottom again, in to the menu VE.Bus Error 11 report.

Now you will see a list of all devices in the system; and their latest VE.Bus Error 11 details. Enter the menu for an explanation of the code.

Maybe somebody from Victron could at least explain what happens during relay test 'step 6' and what does error code '0x604' or '0x605' mean.

Is there a reason not to discus this here?

Why should I choose the much more complicated procedure to contact my Victron representative (which I do not have) just to get this information. And I'm sure that there are other people who are interested in this information.

I just want to isolate this error as much as possible before making other people busy.

BTW, the grid code is 'Germany with internal NS protection'.

Many thanks in advance.

Hi, my Multi worked several weeks. Two days ago all of a sudden it threw Error 11 when restarting after power down. ACout1 didn't come back on-line. Tried to narrow down the error but w/o success.
So I ripped out the entire wiring and did it from scratch. Almost half a day later, had to take some breaks..., set up with new wiring which I thought was correct - but same problem, Error 11.
So I started classical error tracing...Brought the Multi up w/o wirig at ACout1, then step by step connected the loads and inverters.

Finally, after I had separated the ACout1 Neutrals from ACin it worked. Was this by accident ?
I don't really understand the behaviour as the schematics Appendix2 shows both neutrals being connected after pwr up. Nor do I understand why it was working for several weeks w/o any problem.
I will upgrade Firmware to 455 next days to get more details on Error 11 in case it comes back.

I assume Version 2690455 will work

If this is still true:

'If I disconnect the PE (GND) from the Multis the relay test passes without error and everything runs smooth. '

Then I'd strongly suggest to have an electrician or Victron installer look at the wiring of the site.

Lot's of things to try:
-check for neutral-earth connections behind the inverters
-disconnect all circuits and re-connect one by one to see where the problem lies
-measure if there is voltage between incoming neutral and earth
-etc.

This Error 11 drives me nuts. Tonight the Multigrid 48/3000 (Firmware 460), after months of running perfectly well, threw the error 11 again. And "healed" itself. Couple minutes later the error obviously was gone, system went back in operation w/o any action on my side. As the entire wiring has been replaced already and system worked for months, I will not go down this route again, just watch the situation. But of course I am keen if there is any similar experience "out there"?

Txs for any feedback

looking for some assistance with error 11 (ground relay error failed at stage 8) on Victron Multiplus II GX (5kva).

Got the error almost 2 months ago and despite numerous requests to my supplier my calls have been ignored and no action taken. I am still within my warranty period.

About 6 months ago I had an error 8 message and when the supplier did come out to check they eventually replaced the invertor.

I am not an electrician so have limited knowledge of wiring but having read a bit on error 11 it stated that the is a possibility that it could be a wiring issue. My system wiring is displayed below, please can someone advise if this seems correct. The only thing I havnt seen with other systems is the connection og PE to PE AC-out 1 to AC-out 2 which in turn is connected to AC-in PE.

I am based in JHB South Africa and with almost 12 hours of load shedding a day it is difficult to function without the system.

Any help would be appreciated.