58 Room Air ConditionerTroubleshooting Guide 2) Balance refrigerant of the 3-way valve
(Gas leakage)
• Procedure (1) Confirm that both the liquid side and gas side
valves are set to the back seat.
(2) Connect the charge set to the 3-way valve’s
port.
– Leave the valve on the charge set closed.
–Connect the charge hose to the service port.
(3) Open the valve (Lo side) on the charge set and
discharge the refrigerant until the gauge indi-
cates 0 kg/cm2G.
– If there is no air in the refrigerant cycle (the
pressure when the air conditioner is not running
is higher than 1 kg/cm2G), discharge the refrig-
erant until the gauge indicates 0.5 to 1
kg/cm2G. if this is the case, it will not be neces-
sary to apply a evacuatin.
–Discharge the refrigerant gradually; if it is dis-
charged too suddenly, the refrigeration oil will
also be discharged.
Lo
Open
Open
3-Way
valve
3-Way
valve
Gas side
CLOSEOPEN
Outdoor unit
Liquid side
Indoor unit