GREE     U-Match 6 SERIES UNIT SERVICE MANUAL 
49 
Model: 
GUD140W1/NhA-S 
Drive Board: 
 
No.
Printing  Interface  No.
Printing  Interface 
1  N  Neutral wire  2  AC-L  Live wire 
3  2WAY  2-way valve  4  4WAY  4-way valve 
5  HEAT_C   Compressor chassis electric heating  6  HEAT_B  Chassis electric heating 
7  CN5  Relay control terminal  8  COM  Zero Fire Communication Terminal 
9  JTAG1  EE input interface  10  JTAG  Burning port 
11  CN4  485 communication interface  12  CN1  24V control interface 
13  EP 
Zero Fire Communication Monitoring Circuit 
Interface 
14  CN3  Pressure Sensor 
15  LPP  System low pressure protection interface  16  HPP 
System high pressure protection 
interface 
17  EKV2  Heat electronic expansion valve  18  EKV1 
Refrigeration electronic expansion 
valve 
19  EKV3  Injunctone electronic expansion valve  20  DRED  Dred Communication Interface 
21  T_LAC  Temporary temperature package interface  22  T_SENSOR2
Passser In / Exercise Temperature 
Pack 
23  T_SENSOR1
Outer tube outer ring exhaust warm 
package interface 
24  JUMP1  Master jumper cap 
25  JUMP2  Drive jumper cap  26  TEST  Fast test port 
27  DC_OUT  Discharge terminal  28  OFAN  Fan interface 
29  W  Inverter compressor W phase  30  V  Inverter compressor V phase 
31  U  Inverter compressor U phase  —
 
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