Hi
I use an ODB reader such as:
https://www.ebay.co.uk/itm/ELM327-WiFi-OBD2-Car-Diagnostics-Scanner-Code-Reader-for-Mobile-iOS-AND-Android/123088104354?epid=7002503384&hash=item1ca89f6ba2:g:w5AAAOSwX0Fa1w0I
which links by Bluetooth to ODB Fusion software which is available for both Android and IOS. Total cost <£20. This has worked well for me in clearing the yellow warning light on the Aeromax.
Hope this works for you.
Regards
Malcolm
