Gree GUD24W2/D-D(U) - PCB Layout

GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL
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3.2 PCB Layout
3.2.1 Interface
Indoor Unit:
Model:
GUD24AH2/D-D(U),GUD30AH2/D-D(U),GUD36AH2/D-D(U), GUD42AH2/D-D(U),
GUD48AH2/D-D(U), GUD60AH2/D-D(U)
Mainboard:
No. Printing Interface No. Printing Interface
1 N Neutral wire input 11 TUBE-0
Air outlet temperature
sensor
2 AC-L Live wire input 12 X2 Heater control signal
3 TUBE Tube temperature sensor 13 X1 Heater control signal
4 CN5 DC motor output 14 X15 Heater feedback signal
5 CN4
Online test
communication interface
15 X5
Transformer Live wire
input
(unused)
6 X10 4-Way check 16 X13
Transformer Live wire
input
7 X9 Indoor motor check 17 X7
Transformer Neutral
wire input
8 CN7
Heater check and
Defrosting signal check
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