Table Of Contents - Gree A Series Service Manual

1 Safety Notice ............................................................................................................. 1
2 Preface ...................................................................................................................... 1
3 Product Information ................................................................................................... 1
3.1 Instroduction ........................................................................................................ 1
3.1.1 Lineup ......................................................................................................... 1
3.1.2 Model Number Nomenclature..................................................................... 2
3.1.3 Product Features ........................................................................................ 2
3.1.4 Nominal Operating Conditions.................................................................... 3
3.1.5 Operation Range......................................................................................... 3
3.2 Unit Performance Curves .................................................................................... 3
3.3 Working Principle................................................................................................. 5
3.3.1 Principle Diagrams...................................................................................... 5
3.4 Techinical Parameters List................................................................................... 5
3.4.1 Electrical Parameters.................................................................................. 5
3.4.2 Performance Parameters Table.................................................................. 6
3.5 Scope of Supply .................................................................................................. 7
3.6 Selection Statement ............................................................................................ 7
3.6.1 Selection Procedures.................................................................................. 7
4 Unit Control.............................................................................................................. 13
4.1 Schematic Diagram ........................................................................................... 13
4.2 Operation Flowchart .......................................................................................... 15
4.2.1 Cooling ..................................................................................................... 15
4.2.2 Heating...................................................................................................... 16
4.3 Key Control Logics............................................................................................. 17
4.3.1 Cooling Control ......................................................................................... 17
4.3.2 Heating Control ......................................................................................... 17
4.3.3 Automatic Anti-freezing Operation............................................................ 18
4.3.4 Control to the Compressor........................................................................ 18
4.3.5 Control to the Fan ..................................................................................... 18
4.3.6 Control to the 4-way Valve ....................................................................... 18
4.3.7 Control to the Water Pump........................................................................ 18
4.3.8 Control to the Electronic Expansion Valve................................................ 18
4.3.9 Protection .................................................................................................. 18
4.4 General Introduction .......................................................................................... 19
Contents