How to switch Aqara E1 TRV just between On/off

Hey Guys,
i have some Aqara E1 thermostats now for quite some time now and switched to a heat pump recently. Now i only want the Thermostats to switch between on and off via the physical button and via home assistant.
I can archieve the “ON” state when i set heat mode to 30°C and then just add some degree by turning the knob or hitting + in home assistant. The off state works like that only in the other direction .

Do you have any ideas how to set this behaviour via automation or mqtt addon or something in that direction?

Thank you in advance :slight_smile: