We set all Cottage at an Ambient Temperature but know some like it Hot !

1) Check the Thermostatic room controls they are usually located at the Bottom and Top of the stairs

 

 

2) Check the radiator Valves if your property has them and turn up

 

 

Remember Underfloor Heating can take a while to warm thru and it may take a while for the hot water to circulate.

 

If After 10 minutes there is still no heat please seek help