Table Of Contents - Gree FGR20/BNa-M Service Manual

PRODUCT ..................................................................................................... 2
1 MODELS LIST .......................................................................................................... 2
2 NOMENCLATURE ..................................................................................................... 3
3 FUNCTION ................................................................................................................ 4
3.1 Features-outdoor units ..................................................................................................................4
3.2 Features-indoor units ....................................................................................................................4
4 PRODUCT DATA ...................................................................................................... 5
4.1 Product Data at Rated Condition .................................................................................................5
4.2 Operation Range ..........................................................................................................................8
5 PIPING DIAGRAM .................................................................................................... 9
5.1 Cooling Only .................................................................................................................................9
5.2 Heat Pump ....................................................................................................................................9
CONTROL .................................................................................................... 11
1 OPERATION FLOWCHART .....................................................................................11
1.1 Cooling/Dry Operation ................................................................................................................. 11
1.2 Heating Operation .......................................................................................................................12
2 MAIN LOGIC ............................................................................................................ 13
2.1 Cooling ........................................................................................................................................13
2.2 Dry Mode .....................................................................................................................................13
2.3 Heating Mode ..............................................................................................................................14
2.4 Defrosting ....................................................................................................................................14
2.5 Fan Mode ....................................................................................................................................15
2.6 Cooling mode .............................................................................................................................15
2.7 Dry mode ....................................................................................................................................16
2.8 Fan mode ...................................................................................................................................17
2.9 Heating mode .............................................................................................................................17
2.10 Defrosting mode .......................................................................................................................18
3.WIRED REMOTE CONTROLLER ........................................................................... 19
3.1 Displaying Part ............................................................................................................................19
3.2 Buttons ........................................................................................................................................20
3.3 Installation of Wired Controller and Project Debugging .............................................................. 21
3.4 Instruction to Operation ...............................................................................................................22
3.5 Error Display ...............................................................................................................................34
3.6 Setting of Indoor Room Sensor and Checking of Outdoor Ambient Temperature ....................... 35
4 Wireless Remote Controller ..................................................................................... 37
5 Centralized Controller-week timer ............................................................................ 39
5.1 Function ......................................................................................................................................39
5.2 Operation View ............................................................................................................................39
5.3 Display View ................................................................................................................................40
5.4 Dimensions ................................................................................................................................41
INSTALLATION ............................................................................................ 43
1 INDOOR UNIT INSTALLATION ............................................................................... 43
1.1 Before Installation .......................................................................................................................43
1.2 Installation Site ...........................................................................................................................43
1.3 Dimension Data ..........................................................................................................................43
CONTENTS