Carrier Package Pressure Problems

[mke005]

Hi Everyone!
We have a few new Carrier package systems with R410, pressure have been acting kind of odd lately, I think, on the high side they vary from 265 and later on they go as high as 500 on the high side, during "normal operating conditions", all of the new units show this pattern, which seems kind of odd to me, has anybody, run into something like this? If anyone from carrier, I would really appreciate some feedback, thanks.

[james10]

i assume you mean psi 265 seems low if anything,also later in the day it gets warmer so causes the pressure to rise plus your in mexico where i presume it's quite hot

[mikeref]

Hi Mke005 running up to 57c wait..57*9/5+32= 135F is a little too warm. Have to know ambient and space temperatures and check all condenser fans running+ going the right way.. mike

[serviceman]

r-410? I've been working at pressures up 400psig 350psig high pressure switch is calibrated to cutting 575psig