Dear all,
I'm trying to simulate a geothermal water to water (equation fit) heat pump.
I used the example file as a reference but something doesn't work and I can't explain why.
I have two loops, a cooling and a heating one and they work separately in different seasons.
In summer conditions the heat pump works correctly but in the heating mode it doesn't start at all.
The pump works, there is fluid circulation into the low temperature radiant floor but the heat pump doesn't contibute to rise up the temperature of the water.
I also tried to put a boiler beside and, of course, it satisfies the heating demand of the zone, although it doesn't have the priority.
It seems like the HP is not connected at all, but branches don't produce any error message.
Is there anybody who has an idea on what (maybe) is going on?!?!
Thank you very much!
Germana