GREE                                                                                                    U-Match 5 SERIES UNIT SERVICE MANUAL
 
84 
 
Note: Before removing the 4-way valve, make sure refrigerant is fully discharged from the unit and power is cut off. 
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.   
●Tighten up the screws of 
electromagnetic coil with a 
screwdriver.   
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. 
Model: GUD35W/NhA-T, GUD50W/NhA-T, GUD71W/NhA-T, GUD85W/NhA-T 
Note: Before removing the fan, make sure power is cut off. 
●Use a screwdriver to unscrew 
the two screws on the upper left 
and lower right corners.