GREE         U-Match 5 SERIES UNIT SERVICE MANUAL 
38 
3.2 PCB Layout 
3.2.1 Interface 
Indoor unit: 
Model: 
GUD35T/A-T, GUD50T/A-T, 
GUD35ZD/A-T, GUD50ZD/A-T, GUD71ZD/A-T, GUD85ZD/A-T, GUD100ZD/A-T, GUD125ZD/A-T, 
GUD140ZD/A-T, GUD160ZD/A-T; 
 
No.  Printing  Interface  No.  Printing  Interface 
1  CN6  Power supply  2  DC_MOTOR  DC motor output 
3  PUMP  DC water pump  4  WATER_DTCT  Water level switch 
5  UD_SWING2  Vertical swing output 2  6  UD_SWING1  Vertical swing output 1 
7  DOOR_C  Access control interface  8  COM_BMS  MODBUS gateway interface 
9  COM1,COM2 
Accessories communication 
interface 
10  COM_OUT  ODU communication interface 
11  COM_MANAUL 
Wired controller 
communication interface 
12  TUBE  Evaporator temperature sensor 
13  DISP2  Light board interface 2  14  DISP3  Light board interface 3 
15  ROOM 
Ambient temperature sensor 
interface 
16  HEAT  Electric heating interface 
17  X3  Ground wire  —  —  —