termostat open , hot fuid come inside cabine ( am put hands and check )

am check flaps on climate and this working , when am reduce temeratur to could flaps moving normaly but air its still not hot !!!!
is there maybe some sensor wich control all this ?

regards

hello guys i have little problems with mine volvo , when temperature starts down -10 to -19 i have heating problems with my volvo what am try - clean filter inside cabine - fan control ok working - wings for cooling and heating working / open close when change temperature +/- - motor temperature nor...