I noticed this issue specifically with 090615.aircondition.ktf. The entities somehow do not report a current_temperature value.

It turns out that the ClimateEntity() class, which is used by 090615.aircondition.ktf, doesn't have a current_temperature property at all.

I copied and modified the code from MiotClimateEntity() which has fixed this issue:

@property
def current_temperature(self):
    if self.custom_config('target2current_temp') is True and self.is_on:
        return self.target_temperature
    if self._prop_temperature:
        return float(self._prop_temperature.from_device(self.device) or 0)
    return None

I am not feeling comfortable enough to create a PR since I am not familiar with this module. Please review and fix it accordingly.