Gree GFH24K3FI - IPM, PFC Testing Method

U-Match Series DC Inverter Service Manual
114
 GUHD36NM3FO/GUHD42NM3FO/GUHD48NM3FO/GUHD60NM3FO
(1) Drive Board:
No.
Terminal name
Corresponding function instruction
No.
Terminal name
Corresponding function instruction
1
COMM
Communication interface [1-3.3V,
2-TX, 3-RX, 4-GND] (connect to
main control board COMM1)
9
X7
Connect to PFC reactor 1 outlet line
L1-2
2
PWR
Power interface [1-310VDC, 3-GND]
(connect to main control board PWR1)
10
X8
Connect to PFC reactor 2 outlet line
L2-2
3
X1
Three phase input L1-F (connect
to filter board L1-F)
11
X9
Connect to PFC reactor 3 outlet line
L3-2
4
X2
Three phase input L2-F (connect
to filter board L2-F)
12
DC-BUS
Busbar high voltage discharge
needle
stand, for testing, not connect to line
5
X3
Three phase input L3-F (connect
to filter board L3-F)
13
X501
Connect to compressor U phase
6
X4
Connect to PFC reactor 1 inlet line L1-1
14
X502
Connect to compressor V phase
7
X5
Connect to PFC reactor 2 inlet line L2-1
15
X503
Connect to compressor W phase
8
X6
Connect to PFC reactor 3 inlet line L3-1