I had an okofen pellet boiler installed as a replacement for my gas boiler for 1 week.
but I have a big problem, and it has to fall on a Week End.
My house is divided into several dwellings, my main dwelling, and 3 cottages, 2 of which are connected to central heating.
Except since I opened the radiators of one of the cottages it is cold everywhere.
I pushed the heating curve to 1,9, increased the comfort temperature, but nothing helped.
When I look at the boiler I notice that the starting temperature fluctuates very strongly between 28 ° and 70 °
Suddenly the radiators, once heated and shortly after they are cold.
Detail:
. automatic traps have all been changed
. before I turned on the radiators in the other apartment, the temperature was good at home
when I woke up this morning it was 16 ° in my living room, it curdles

Thanks for votre aide!