Heat pump temperature settings for radatiors

[eurocooling]

hello

we have a system 12 black thermodynamics panels, 1 heat pump and 11 radatiors what's the best temperature setting for heat pump outdoor temperature is 8 degrees three days the system runs perfect then a error code comes up we have check water all ok, gas pressure is perfect can anyone help

[Brian_UK]

Depending on the radiator sizing the required temperature can be from 35°C to 50°C.

You haven't said what the error code is or what make the system is so can't really help too much, sorry.

[eurocooling]

The make is the energypanel model is Gtc 12 and the code is aes