evcc with Keba P30x and failsafe activated leads to out of sync failure

[Myky09]

Hi,

I am new to evcc. Still setup etc. worked quite well. Then I turned on the failsafe mode on Keba P30x to reduce charging to minimum if connection from wallbox to evcc get's lost and get some strange issues. According to the implementation the code should support that setup. Extra go command is setup I guess to prevent the timer on the wallbox running into timeout.

After starting in PV mode with welcome charge enabled, the wallbox starts charging, then it stops as expected. PV output is too low to continue. But then exactly after 3 minutes I get an "out of sync error" and evcc restarts charging again. This continues until i explicitly stop charging. Still then the game "continues". The out of sync error repeats itself but evcc then starts and immediatly stops charging thus nothing happens.

[lp-1 ] INFO 2025/05/06 18:11:44 car connected
[lp-1 ] INFO 2025/05/06 18:11:44 start charging ->
[lp-1 ] WARN 2025/05/06 18:11:45 charger out of sync: expected disabled, got enabled
[lp-1 ] INFO 2025/05/06 18:23:14 stop charging <-
[lp-1 ] WARN 2025/05/06 18:26:14 charger out of sync: expected disabled, got enabled
[lp-1 ] INFO 2025/05/06 18:26:44 start charging ->
[lp-1 ] INFO 2025/05/06 18:37:14 stop charging <-
[lp-1 ] WARN 2025/05/06 18:40:14 charger out of sync: expected disabled, got enabled
[lp-1 ] INFO 2025/05/06 18:40:44 start charging ->
[lp-1 ] INFO 2025/05/06 18:51:14 stop charging <-
[lp-1 ] WARN 2025/05/06 18:54:14 charger out of sync: expected disabled, got enabled
[lp-1 ] INFO 2025/05/06 18:54:44 start charging ->
[lp-1 ] INFO 2025/05/06 19:05:14 stop charging <-
[lp-1 ] WARN 2025/05/06 19:08:14 charger out of sync: expected disabled, got enabled
[lp-1 ] INFO 2025/05/06 19:08:44 start charging ->
[lp-1 ] INFO 2025/05/06 19:13:14 stop charging <-
[lp-1 ] WARN 2025/05/06 19:16:14 charger out of sync: expected disabled, got enabled
[lp-1 ] INFO 2025/05/06 19:19:44 start charging ->
[lp-1 ] WARN 2025/05/06 19:19:44 charger out of sync: expected disabled, got enabled
[lp-1 ] INFO 2025/05/06 19:20:14 stop charging <-
[lp-1 ] INFO 2025/05/06 19:23:14 start charging ->
[lp-1 ] WARN 2025/05/06 19:23:14 charger out of sync: expected disabled, got enabled
[lp-1 ] INFO 2025/05/06 19:23:44 stop charging <-

I guess this also happens in other scenarios and is caused by the extra code triggered by the fail safe configuration.

evcc running as homeassistant addon
evcc version used: 0.203.5

can be verified also under windows

Actually, I wanted to create a bug report but that is always denied.

evcc_config.txt
trace.txt

[mfuchs1984]

How is the failsafe timeout in the charger configured? 180 seconds? The behavior of the Wallbox seems strange, there is a lot of modbus communication within this timeframe, but still, it starts charging after they elapse.

[Myky09]

Did that help you?
And is there a chance to get the change into one of the next evcc releases?
I am back from my office trip. If I can further assist here - your welcome.
Would be happy to get the topic fixed.

[mfuchs1984]

Sure, this looks good as far as I can see. Will have a more detailed look at case 8 though.
The PR is waiting for feedback / approval by @andig. I am sure he will take care for it as soon as his priorities allow.

[mfuchs1984]

Test case 8 is actually a miss in the pull request, will update it soon and let you know.

Great testing btw!

[andig]

See #21849 for a straight-forward fix according to #21093 (reply in thread). Not sure if P40 requires the same, but applied anyways.

[andig]

If I can further assist here - your welcome.

@Myky09 did you test the PR?

[Myky09]

Sorry for not responding immediately. I am on vacation for some days. I can give it a try on 19.6.Am 17.06.2025 11:38 schrieb andig ***@***.***>: If I can further assist here - your welcome. @Myky09 did you test the PR? —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>

[andig]

@Myky09 see #22262, have you been able to test?

[Myky09]

Hi @andig,

do you still need testing here?

[andig]

It's merged- if it doesn't work we'll find out sooner or later, test or not :O

[averloon]

Hi, I have a closely related setup: SolarEdge Home EV Charger (rebranded Keba P30) with a SolarEdge hybrid inverter, evcc 0.306.3 on a Raspberry Pi, BMW i5. I disabled the failsafe via UDP (failsafe 0 0 1) and blocked the charger's internet access in the router to cut the SolarEdge OCPP control. Despite this I still see the recurring "charger out of sync: expected enabled, got disabled" with the car staying in status B, and only a brief start/stop when it does engage.
Does the merged fix also cover the case where failsafe is disabled (timeout 0), or is it specific to an active failsafe timeout? And is the SolarEdge-branded variant known to behave differently from the standard P30x here? Thanks for the great work.

[andig]

Open issue with trace log…