2018 Carrier Infinity 2 stage geothermal Upon arrival today the system was running in cooling mode but nearly empty on r410a refrigerant the system holds 114 Oz for a full charge but required exactly 100 oz to achieve book specs running pressures today. The system was running at 43 PSI suction with 170 PSI discharge but required normal running pressures of 118 and 337. System is currently running at full capacity in cooling mode but is guaranteed to have a leak that needs to be repaired ASAP Ultraviolet dye with leak stop was injected today for a future leak search at the homeowners request. Westin air recommends within 1 to 3 months however other customers prefer to wait until the system fails again. The thermostat has several years of historical service codes with the most recent dated in June of 2025 related to humidity sensor failure with 60 plus events. All other service codes are 2024 or older. Ultraviolet dye and electronic leak testing will identify the current issues th