GREE         U-Match 5 SERIES UNIT SERVICE MANUAL 
122 
Removal of 4-way valve 
Note: Before removing the 4-way valve, make sure refrigerant is fully discharged from the unit and power is cut off. 
Step  Picture  Work instruction 
2.  Break off the connection pipes 
from the 4-way valve. 
 
  Use a soldering gun to 
loosen the 4 joints on the 
4-way valve and then 
remove the connection 
pipes. 
  Note: When welding the 
pipes, the 4-way valve 
should be wrapped with wet 
cloth for cooling. Do not let 
the flame burn the other 
components. 
3.  Replace the 4-way valve and 
connect it to the connection 
pipes. 
  Replace the 4-way valve and 
then use a soldering gun to 
weld the 4 joints of the 4-way 
valve. 
Note: When welding the 
pipes, the 4-way valve 
should be wrapped with wet 
cloth for cooling. Do not let 
the flame burn the other 
components. 
4.  Install the coil of 4-way valve. 
 
  Tighten the screws of the coil 
of 4-way valve with a 
screwdriver.