Fox A Series Charger A7300P1 unable to control OCPP adjust current
Posted: Tue Mar 31, 2026 1:23 am
hi All I have this charger the fiest day I set it up in evcc It looked like I was able to adjust the chaging current through evcc because everytime I changed it evcc updated its output but I never checked the charger if it was actually charging at the new current
however the next without touching anything suddenly any request to change current was not changing back in evcc and not being acknowledged by the charger
I have spent days trying to fix this deleting evcc and starting again and all sorts of settings i can stop start charging no problem ocpp is working fine on 1.6j single phase charger max amps 32, min 6 but cannot adjust max amps to go down to say 15
I can set 15 via the app but I have to disconnect the charger go into the app change it back to default mode, adjust the amps, back into ocpp mode and then evcc will use that rate what I set in the app but still cant adjust it by itself
looks like a firmware update happened overnight the first night I set it up I am now on firmware version 1.06 and ocpp firnware 1.07 I am pretty sure this broke it (if it ever worked) because I also setup ocpp inside Home assisntant instead and it too wont allow current changes the charger just ignores it
evcc has the charger in its template and other users have confirmed theirs works however my model is A7300P1-E-B-W0 and theirs is A7300S1-E-2
the supported list only mentions and not mine:
A7300P1-E-2
A011KP1-E-2
A011KP1-E-A
A022KP1-E-A
A7300P1-E1-E-A
A022KP1-E-2
however it does say as long as it supports ocpp 1.6j which it does, it should work
my charger is australian model maybe I am just unlucky and model is newer and ocpp commands have changed, or therre is a bug or ocpp set current is not allowed
also I need to point out I am getting zero loos messages back after trying to set charger rate so I cant even try and work out whats going on or post anything useful here! the commands are being sent but nothing returned from charger to acknowlege or reject it
the only thing I did see in the logs but cannot replicate it again was:
you would think if that from trying to set charge current I would get heaps of those but I dont so that log might not even be from trying to change charge current and trying to change something else
if anyone able to help be much appreciated thanks!
however the next without touching anything suddenly any request to change current was not changing back in evcc and not being acknowledged by the charger
I have spent days trying to fix this deleting evcc and starting again and all sorts of settings i can stop start charging no problem ocpp is working fine on 1.6j single phase charger max amps 32, min 6 but cannot adjust max amps to go down to say 15
I can set 15 via the app but I have to disconnect the charger go into the app change it back to default mode, adjust the amps, back into ocpp mode and then evcc will use that rate what I set in the app but still cant adjust it by itself
looks like a firmware update happened overnight the first night I set it up I am now on firmware version 1.06 and ocpp firnware 1.07 I am pretty sure this broke it (if it ever worked) because I also setup ocpp inside Home assisntant instead and it too wont allow current changes the charger just ignores it
evcc has the charger in its template and other users have confirmed theirs works however my model is A7300P1-E-B-W0 and theirs is A7300S1-E-2
the supported list only mentions and not mine:
A7300P1-E-2
A011KP1-E-2
A011KP1-E-A
A022KP1-E-A
A7300P1-E1-E-A
A022KP1-E-2
however it does say as long as it supports ocpp 1.6j which it does, it should work
my charger is australian model maybe I am just unlucky and model is newer and ocpp commands have changed, or therre is a bug or ocpp set current is not allowed
also I need to point out I am getting zero loos messages back after trying to set charger rate so I cant even try and work out whats going on or post anything useful here! the commands are being sent but nothing returned from charger to acknowlege or reject it
the only thing I did see in the logs but cannot replicate it again was:
Code: Select all
Logger: custom_components.ocpp Source: custom_components/ocpp/ocppv16.py:629 Failed with response: Rejectedif anyone able to help be much appreciated thanks!