Since my E2 single phase charger was installed the option in the Mobile App to stop the active charging session has never worked. It does give a red error that says its failed.
Is this the case for everyone?
When I looked at the internals I did not see any obvious device that could interrupt 32 amps, but then maybe this can be done electronically? If the charger itself cannot interrupt power, then clearly it is dependent upon sending a signal to the car, so perhaps my car is not compliant here? My car is an Hyundai Ioniq 5, a pretty common EV.
I have raised this with support both by email and by phone over the last several weeks but I am simply not getting an answer. My number one reason for buying a web enabled EV charger was to be able to stop a session remotely, so if the E2 does not have this feature, I bought the wrong charger for my situation. However I did check this with sales prior to buying, so right now I am feeling very concerned.
Our support team was investigating why the stop commands messages weren’t being received from your app/charger and will send you a direct response today.
It looks like your charger was offline when you sent the stop command, so the command wasn’t received.
We saw a Remote Stop Transaction command on 11th August at 17:18, which didn’t work.
Your charger is connected to your WiFi, and the RSSI is -74, which seems average. RSSI (signal) of -70 dBm to -80 dBm can be the cause of unstable connections, and buffering is common. Basic tasks may still work.
If the charger or your phone loses connectivity temporarily (or signal strength is poor), the remote commands won’t reach the charger, and therefore, it will be rejected.
You might want to test/try sending the command where your cellphone has a stronger WiFi/Cellular signal and see if it has a different outcome.
Or look into a WiFi range extender, upgrade the router to a long range model.
Thanks for the reply. If the issue is connecting to Wifi I might move the access point as the charger is installed on the same wall as the access point but there is a massive steel beam between them. I have not noticed any connection issues but my son is coming over today and can look at our router logs.
I tested the stop command twice today. I made sure the charge unit was online (although I believe it was previously when I had 5 attempts) and it worked correctly both times. So thank you, that illustrates the device is not faulty, and likely the cause was outside the device. I have found a line-of-sight position where the access point can be placed and service my inverters and the Tesla Gateway as well as the Evnet unit.
I believe we discovered the issue. And it really blew my son’s technical mind. I have THREE access points on my property, one in the house, one in the cottage and one in the garage. All are connected to the incoming router/switch by cat 6 cables. The garage access point does have a line of sight issue currently for the Evnex, but is only about 3 metres from the charger.
All three access points have the same wifi SSID, and obviously password. But the Evnex charger and the Fronius inverters and the Tesla Gateway were not connected to that access point in the garage. Most I think were on the cottage access point which is opposite, but has a double brick wall and not a very strong access point - powerwise - and would be 25 metres away. And when you close the steel garage door, it clearly gets worse. And of course diagnostics have been done with the garage door open. It was only by inspecting the router itself that this was discovered.
My son had assumed that all web connected devices would switch to the strongest SSID signal, but that does not appear to be the case. Or perhaps, in a router reboot, one obviously would come on line before the others, even if only seconds apart. So the solution was quite simple, To rename all three to unique names and migrate the devices in the garage to that renamed SSID.
I believe this will work. But if a problem reoccurs, I will relocate the access point in the garage to suit the Evnex charger.