I've had sub-floor heating installed a month ago and I think I have a problem with the air in the installation, because there are some rooms that don't reach the desired temperature.
The plumbers tried twice to take out the air by locking each circuit separately, but it's still not working. Now they told me to let the circuit pump running while turning off the central heating for a week. It doesn't make any sense to me and I'm pretty sure they aren't very good with this.
There's 8 circuits and a Wilo Yonos Para pump that cools down the water that comes from the central heating by pumping the returned water in the main pipe (English is not my native language and I don't know how to formulate it very well. Sorry for that).
Basically the problem is that I have 3 rooms upstair (2 bathrooms and the dressing) that don't reach the desired temperature of 20C even after one week. The bigger rooms (bedrooms) reached it in 1-2 days.