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Gree
4.Control Board Description & Fault Code
4.1 Main Control Board
Silk Screen
X1
Power supply zero line(only for GRS-CP18Pd/NhA-K、GRS-CP18Pd/NhA-S)
K7_3
Load power supply fire wire
K7_4
Water pump fire wire
CN3
Power input
CN9
Electronic anode power supply (Reserved)
CN50
Water outlet (50 K), water inlet (50 K) temperature sensor
CN7
Water tank (50 K) temperature sensor (Reserved)
CN19
Low pressure sensor (Reserved)
CN99
Water flow switch
CN44
Low pressure switch
CN11
Communication interface of external wire controller
CN6
Communication interface of panel wire controller
CN2
(Reserved)
CN14
Drive communication
CN27
External third-party control (Reserved)
CN53
Remote control (Reserved)
4.2 Drive Control Board
(a) GRS-CP11Pd/NhA-K、GRS-CP11Pd/NhA-S
SWIMMING POOL HEAT PUMP (R32)
Introduction
(b) GRS-CP18Pd/NhA-K、GRS-CP18Pd/NhA-S
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