Hi,

I'm working on a GS heat pump that runs on R32 but is not raising the discharge temp to where you would expect when running. All the other temps seem correct but discharge only ever is slightly over the condensing temp. Typical scenario
Brine In 8C
Brine Out 6C
Evap -1C
Superheat 7k
heating flow 35C
Heating ret 30C
Condensing 31C
Discharge 33C

I would expect the system to have a discharge temp of about 55-60C in this scenario but its not happening. Any ideas what may be the cause. EEV controller so valve regulation is pretty good.