help

[eugene82]

Hi I am installing a heat pump my pressures seam to be out of the norm, the outside air is 41F the low side pressure is 104psi and the high side is 450psi can this be my txv outside or my system is overcharged?

[monkey spanners]

Hey Eugene,

What refrigerant is the system running?

Is it a new instal or an existing system that has developed a fault, if so any history?

Any superheat and subcooling readings?

Cheers Jon

[eugene82]

its r410A, the system is new i am about to do the subcooling reading

[eugene82]

the outside unit came pre-charged so when you weld the pipes and vacuum then you just open the valves on the outside unit that's why i don't know how much r410A is inside.

[james10]

these pressures are around the norm for 410a it is a higher pressure refrigerant, check your temp difference accross your coil in cooling should be 10-12 degrees C if so then you dont have a problem make sure all your coils and filters are clean also

[eugene82]

thanks, it was my air flow it was not enough its working fine now i've up the speed of the fan