[APP][Pro] Alfen - Optimal Charging, Smarter Homes: Powering Efficiency for You and the Grid

Try to disable auto backup. Perhaps due to your issues it was not able to finalize a backup and keeps trying causing the crashes. Maybe it is not related but worth a try I would think.

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Just had a crash whitout Alfen running. So never mind, Alfen isn’t the problem.

Turned off the auto backup. will see

Hi, question, what is the polling frequency of the app? I often see that the power useage is very much trailing what is actually being used. Is it possible to change that, or the API does not allow it?

Currently it is every 30 seconds. With the limitations of the Alfen API I wouldn’t advice to have a higher interval.

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Since this morning at around 5.45 am my Alfen Single Pro suddenly started to charge (6A) I thought that could be caused by a fault in my programming (flows) or because of an software update of my car (it was updated this night). But I now see that the Alfen doesn’t respond to any commands from Homey. I can however see the Alfen in Homey and I see all readings correctly.
Does anyone has any idea what can cause this and how I can fix it?
As you can see in the picture below, the “Stroomsterkte limiet” is not beeing updated for 16 hours now…

I just tried to cut the power totally to the Alfen, to force it to reboot, but that didn’t work. Looks a bit like there is a bug in the API or something?

Update!: I had contact with Eneco. Apparently the Alfen was in a “niet goed afgezekerd” mode. A hard reset from Eneco solved it. They told me I could do a hard reset myself by cutting the power to the Alfen for more then 15 minutes.
I think that I might have caused this by letting Homey adjust the max Ampere every 2 minutes. Ill adjust my flows that it will only adjust it every 15 minutes or so.

Why do you change the max power so often?

Changing the max A every 2 minutes is not an issue. I use Homey for loadbalancing my Alfen Eve Single Pro. A Homey flow controls the max A to prevent overloading the main power connection/main circuit of my home.

I do this this way because I had some issues with the loadbalancing of the Alfen in the beginning (responded too slow) and I use EVCC now to control the Alfen to charge in different modes (max or solar only) and to charge only with energy prices below a specific threshold. If you use EVCC you cannot use the loadbalancing of the Alfen itself. But homey can control EVCc and with that the Alfen.

My homey flow adjusts the max A of the Alfen every 10 seconds, but only if the change in A is significant, only if the power usage is close to my home maximum and only if a car is actually charging.

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