Upon arrival check system and ac mode. Tested static static was failed. Checked all other components on the furnace and the AC is well. It was a brand new system, so there was nothing wrong with the system itself we just came across of the AC unit itself on the outside was a bit under charged so we had to charge it up. I’ll let the customer know what we found that we wanted to have a field supervisor out just to verify and retest on why they aesthetic is so high Above finishing all the work supervisor has arrived and talking with customer now.