I have Thermia Diplomat from 2004.
I have been reading the topics here, changed and updated entrance values, looked at graphs but without any luck.
Roomtemperature on the main display have is 10 C , the bathrooms with stonefloors are 24.3 C the rest of the house with wooden floors is 20,5 C. What can be wrong?

The house is 300sqm 3floors (100sqm each) , 200m above sea level. Outside temperatures are 8-17C
Du kan sværet meg på norsk, svensk, dansk også.. googler meg sikkert frem til translate.