I found out that on my edge modules - the booster channel works in Cooling mode but on the EdgeLit panels booster mode is NOT activated when the temperature difference is set (for booster mode).
which I think is a bit tricky in double systems (when you have cooling + heating)… as in heating mode you would connect the booster channel to W2 of your heating system - in cooling mode to Y2 of your AC… so let’s say you connect it to your heater - you would initiate your heater when your temperature is +3C and the AC is blowing… … anyway… perhaps we can make a heater-booster and cooling-booster channel? (staying in line with Y2 and W2 in regular thermostats)
the POD module setting
and result when setting temp very low:
compared to the VMBELO
the VMBELO NOT activating the booster channel