Interface - Gree GUHD09NK3FO Service Manual

2.3 Interface

(1). GUHD09NK3FO/GUHD12NK3FO Mainboard
1
2
No. SILK-SCREEN
1 LX_2
3 W
5 U
7 DC_MOTOR
9 DC-MOTOR1
11 E1
13 AC-L
15 O_HEAT_L
17 O_HEAT_N
19 H-PRESS
21 HEAT
23 BACK_BUMP_L
25 E3
27 CN65
29 LPP
31 FA
33 T-SENSOR1(Mid)
35 T-SENSOR2(Tube)
37 T-SENSOR2(Exhaust)
39 SW4
41 A-DRIVE
42 41 40 39
3 4 5 6 7
INTERFACE INSTRUCTION
PFC reactor wire (yellow)
Compressor Phase W
Compressor Phase U
(Reserved)
Interface of outdoor fan motor
(Reserved)
Live wire input (red)
(Reserved)
(Reserved)
Pressure switch
Compressor electric heating belt
(Reserved)
Grounding wire (yellow-
green lead-out wire)
(Reserved)
Low pressure switch (reserved)
Electronic expansion valve
(Reserved)
Tube temperature sensor
Discharge temperature sensor
(Reserved)
(Reserved)
38 37 36 35 34 33 32 31 30 29 28
8 9 10
No. SILK-SCREEN
2 LX_1
4 V
6 DC-BUS
8 -
10 CN14/CN15
12 E2
14 AC-N
16 I_HEAT_N
18 I_HEAT_L
20 VA-1
22 4V
24 BACK_BUMP_N
26 CN66
28 HPP
30 OVC-COMP
32 T-SENSOR1(In)
34 T-SENSOR1(Out)
36 T-SENSOR2(Ambi)
38 T-SENSOR3
40 SW3
42 JTAG1
U-Match Series DC
Inverter Service Manual
27 26 25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
INTERFACE INSTRUCTION
PFC reactor wire (white)
Compressor Phase V
(Reserved)
Compressor interface
Interface of CPU board
Grounding wire (yellow-
green lead-out wire)
Neutral wire input (white)
(Reserved)
(Reserved)
Chassis electric heating belt
4-way valve
(Reserved)
Communication interface between
indoor unit and outdoor unit
High pressure switch (reserved)
Compressor overload switch
(Reserved)
(Reserved)
Ambient temperature sensor
(Reserved)
(Reserved)
(Reserved)
95