Gree Versati III Series Owner's Manual page 42

Air-to-water Heat Pump Split Versati
2WAY
4WAY
OFAN
LPS-C
LPS-H
HPS
HPP
FA
FB
T_SENSOR1
T_SENSOR
CN9
(2) GRS-CQ8.0Pd/NhH-E, GRS-CQ10Pd/NhH-E
CN20
CN21
CN22
CN23
CN24
CN25
CN10
CN8
CN9
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 Other thermal by 220VAC
X24 Reserved
X25 Reserved
X26 Reserved
X27 2-way valve 1 is normally open
X28 2-way valve 1 is normally closed
X29 Reserved
Reserved
4-way valve coil
DC motor
Low pressure switch for cooling
Low pressure switch for Heating
High pressure switch
High pressure sensor
Electronic expansion valve coil 1
Electronic expansion valve coil 2
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 HFRQRPL]HU LQOHW  HFRQRPL]HU RXWOHW  GHIURVWLQJ
485-2 communication without 12V 3-pin
X26 X25 X24 X23 X22 X21 X20
CN16 CN15 CN19
CN18 CN3
X34 X33 X32 X31 X30 X29 X28 X27
CN4
Introduction
38
SPLIT TYPE
N
AC_L
X3