There are three primary pressures to focus on: Compression ratio is the absolute high side pressure divided by the absolute low side pressure. Who makes your hvac unit?
Normal R410a Operating Pressures
Is this a hot start up?
83.1 high side line temp.
66.2 low side line temp. Do you know what the indoor temperature is? The low side pressure on r410a system is at 220 psig same as high side. Low pressure for 410a refrigerant is typically considered to be below 70 psi on the low side and below 150 psi on the high side.
This is the pressure in the evaporator coils, indicating the amount of refrigerant entering the compressor. Higher temperature equates to higher pressure. 335psi = 104 saturation temp. The compression ratio is affected by the pressure differential between the high.
125 psi = 42 saturation temp.
