407C heat pump / on heating
we have a Sirius model heat pump / french product
The heat pump is a 19KW , water to water

Heat pump was underchaged (only 900gr of 407c)
We recharge the heat pump with R407C, the qty is correct (as on the label).


informations

- 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)

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

Please advice, thx