Gree GKH12K3FI - Interface

U-Match Series DC Inverter Service Manual
109
2.3 Interface
 GUHD09NK3FO/GUHD12NK3FO Main Control board
No.
Printing
Interface
No.
Printing
Interface
1
LX_2
PFC reactor wire (yellow)
2
LX_1
PFC reactor wire (white)
3
W
Compressor Phase W
4
V
Compressor Phase V
5
U
Compressor Phase U
6
DC-BUS
(Reserved)
7
DC_MOTOR
(Reserved)
8
-
Compressor interface
9
DC-MOTOR1
Interface of outdoor fan
motor
10
CN14/CN15
Interface of CPU board
11
E1
(Reserved)
12
E2
Grounding wire (yellow-green
lead-out wire)
13
AC-L
Live wire input (red)
14
AC-N
Neutral wire input (white)
15
O_HEAT_L
(Reserved)
16
I_HEAT_N
(Reserved)
17
O_HEAT_N
(Reserved)
18
I_HEAT_L
(Reserved)
19
H-PRESS
Pressure switch
20
VA-1
Chassis electric heating belt
21
HEAT
Compressor electric
heating belt
22
4V
4-way valve
23
BACK_BUMP_L
(Reserved)
24
BACK_BUMP_N
(Reserved)
25
E3
Grounding wire
(yellow-green lead-out wire)
26
CN66
Communication interface
between indoor unit and
outdoor unit
27
CN65
(Reserved)
28
HPP
High pressure switch
(reserved)
29
LPP
Low pressure switch
(reserved)
30
OVC-COMP
Compressor overload switch
31
FA
Electronic expansion valve
32
T-SENSOR1(In)
(Reserved)
33
T-SENSOR1(Mid)
(Reserved)
34
T-SENSOR1(Out)
(Reserved)
35
T-SENSOR2(Tube)
Tube temperature sensor
36
T-SENSOR2(Ambi)
Ambient temperature sensor
37
T-SENSOR2(Exhaust)
Discharge temperature
sensor
38
T-SENSOR3
(Reserved)
39
SW4
(Reserved)
40
SW3
(Reserved)
41
A-DRIVE
(Reserved)
42
JTAG1
(Reserved)