Gree GKH42K3FI

U-Match Series DC Inverter Service Manual
111
10
H-PRESS
High pressure switch for fan speed
adjustment
Pressure protection switch for fan speed
adjustment
11
HPP
High pressure switch for
systemprotection(obligate)
Interface of high pressure protection
12
LPP
Low pressure switch for system
protection (obligate)
Interface of low pressure protection
13
OVC-COMP
Compressor overload protection
Interface of compressor overload protection
14
T-SENSOR2
1&2 pin: Tube sensor
3&4 pin: Ambient temperature
5&6 pin: Air discharge
1&2 pin: Case temperature sensor
3&4 pin: Ambient temperature sensor
5&6 pin: Discharge temperature sensor
15
FA
Electronic expansion valve line
1 to 4-pin: Drive impulse output;5-pin:
+12V;
Interface of electronic expansion valve:
1 to 4-pin: Drive impulse output;
5-pin: +12V;
16
HEAT
Compressor electrical heater
Compressor electric heating belt
17
VA-1
Chassis electrical heater
Chassis electric heating belt
18
4V
4-way valve
4-way valve
 GUHD18NK3FO/GUHD24NK3FO/ GUHD30NK3FO/ GUHD36NK3FO/ GUHD42NK3FO
(1) Driving Board
No.
Printing
Interface
No.
Printing
Interface
1
L2_2
PFC induction wire (blue)
2
L1_1
PFC induction wire (brown)
3
N
Neutral wire input (white)
4
AC-L
Live wire input (red)
5
COMM/COMM1
Communication interface
6
JTAG1
(Reserved)
7
PWR
Control power input
8
DC-BUS1
Bus electric discharging
interface (for testing)
9
L2-1
PFC induction wire (yellow)
10
L1-2
PFC induction wire (white)
11
P-OUT
(Reserved)
12
G-OUT
(Reserved)
13
W
Compressor Phase W
14
V
Compressor Phase V
15
U
Compressor Phase U