Service and Parts Manual (2019, 2020, 2021, 2022)
85 PB
R-410A SEALED SYSTEM REPAIR
Pumping Down
Lo
Open
Purge the air
Outdoor unit
Indoor unit
Liquid side
Gas side
CLOSE
Open
2-Way
valve
CLOSE
3-Way
valve
– Remove the valve stem caps and confirm that the valve stems
are in the raised position.
– Be sure to use a hexagonal wrench to operate the valve stems.
– Connect the charge hose with the push pin to the service port.
– Open  the  low-pressure  valve  on  the  charge  set  slightly  to  air
purge from the charge hose.
– Do this quickly so that the gauge ends up indicating 0-15 PSI.
– Tighten the service port nut.
– Be sure to check for gas leakage.
6) Operate the air Conditioner on the cooling cycle and stop when the gauge indicates 14 PSI.










