Sirius model / french product
The heat pump is a 19KW , water to water

- on low pressure side we have: inlet water 16C, outlet water 12C, pressure of the refrigerant 4.5 bar

- on high pressure side: inlet water 30 C, outlet water 35 C, pressure of the refrigerant is 20 bar

This high pressure is to high for the 35 C water outlet
The top of the compressor is 70C, too hot

If the water outlet is set 40 C we have pressure error (compressor stops)

We recharge the heat pump with R407C, the qty is correct. But the pressures are still to high

When we open fully the expansion valve the low pressure rich 5.5 bar and high one 18 bar / the top the compressor is still 70C