Gree Versati III Owner's Manual page 44

Air-to-water Heat Pump
L-OUT Live line output
N-OUT Neutral line output
COMM
Communication
U To compressor phase U
V To compressor phase V
W
To compressor phase W
(2) GRS-CQ10Pd/NhG-K, GRS-CQ12Pd/NhG-K, GRS-CQ14Pd/NhG-K, GRS-CQ16Pd/
NhG-K
CN20
CN21
CN22
CN23
CN24
CN25
CN10
CN8
CN 9
Silk Screen
AC-L Live wire of power supply
N Neutral wire of power supply
X3 To the ground
X20 E-heater of water tank
X21 E-heater 1
X22 E-heater 2
X23 Assistant heat by 220VAC
X24 Reserved
X25 Electric heater for the plate-type heat exchanger
X26 Reserved
X27 Electric magnetic 2-way valve 1 is normally open
X28 Electric magnetic 2-way valve 1 is normally closed
X29 High-power load control
X30 High-power load control
X31 Electric magnetic 3-way valve 1 is normally open (reserved)
X32 Electric magnetic 3-way valve 1 is normally closed (reserved)
X33 Electric magnetic 3-way valve 2 is normally open (water tank)
X34 Electric magnetic 3-way valve 2 is normally closed (water tank)
CN30 Signals 1, 2, 3, 4, power supply 5
X26 X25 X24 X23 X22 X21 X20
CN16 CN15 CN19
CN18 CN3
X34 X33 X32 X31 X30 X29 X28 X27
CN4 CN1 CN2
Introduction
40
MONOBLOC TYPE
N
AC_L
X3