Daikin VRV IV+ Installer And User Reference Manual page 4

Table of contents
Installer and user reference guide
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9.2 Maintenance safety precautions.................................................................................................................................... 113
9.2.1 To prevent electrical hazards ......................................................................................................................... 113
9.3 About service mode operation....................................................................................................................................... 114
9.3.1 To use vacuum mode ..................................................................................................................................... 114
9.3.2 To recover refrigerant .................................................................................................................................... 114
10 Troubleshooting
10.1 Overview: Troubleshooting ............................................................................................................................................ 116
10.2 Solving problems based on error codes ......................................................................................................................... 116
10.3 Error codes: Overview .................................................................................................................................................... 116
11 Disposal
12 Technical data
12.1 Overview: Technical data................................................................................................................................................ 123
12.2 Service space: Outdoor unit ........................................................................................................................................... 123
12.3 Piping diagram: Outdoor unit ......................................................................................................................................... 126
12.4 Wiring diagram: Outdoor unit ........................................................................................................................................ 131
For the user
13 About the system
13.1 System layout.................................................................................................................................................................. 137
14 User interface
15 Before operation
16 Operation
16.1 Operation range.............................................................................................................................................................. 141
16.2 Operating the system ..................................................................................................................................................... 141
16.2.1 About operating the system........................................................................................................................... 141
16.2.2 About cooling, heating, fan only, and automatic operation ......................................................................... 141
16.2.3 About the heating operation.......................................................................................................................... 141
16.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch)...................................... 142
16.2.5 To operate the system (WITH cool/heat changeover remote control switch)............................................. 143
16.3 Using the dry program.................................................................................................................................................... 143
16.3.1 About the dry program................................................................................................................................... 143
16.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch) .................................... 144
16.3.3 To use the dry program (WITH cool/heat changeover remote control switch) ........................................... 144
16.4 Adjusting the air flow direction ...................................................................................................................................... 145
16.4.1 About the air flow flap.................................................................................................................................... 145
16.5 Setting the master user interface................................................................................................................................... 146
16.5.1 About setting the master user interface........................................................................................................ 146
16.5.2 To designate the master user interface (VRV DX and Hydrobox) ................................................................. 146
16.5.3 To designate the master user interface (VRV DX and RA DX) ....................................................................... 147
16.6 About control systems .................................................................................................................................................... 147
17 Energy saving and optimum operation
17.1 Available main operation methods ................................................................................................................................ 148
17.2 Available comfort settings .............................................................................................................................................. 149
18 Maintenance and service
18.1 Maintenance after a long stop period............................................................................................................................ 150
18.2 Maintenance before a long stop period......................................................................................................................... 150
18.3 About the refrigerant...................................................................................................................................................... 151
18.4 After-sales service and warranty .................................................................................................................................... 151
18.4.1 Warranty period ............................................................................................................................................. 151
18.4.2 Recommended maintenance and inspection ................................................................................................ 151
18.4.3 Recommended maintenance and inspection cycles ..................................................................................... 152
18.4.4 Shortened maintenance and replacement cycles ......................................................................................... 153
19 Troubleshooting
19.1 Error codes: Overview .................................................................................................................................................... 155
19.2 Symptoms that are NOT system malfunctions............................................................................................................... 157
19.2.1 Symptom: The system does not operate....................................................................................................... 157
19.2.2 Symptom: Cool/Heat cannot be changed over ............................................................................................. 158
19.2.3 Symptom: Fan operation is possible, but cooling and heating do not work ................................................ 158
19.2.4 Symptom: The fan speed does not correspond to the setting...................................................................... 158
19.2.5 Symptom: The fan direction does not correspond to the setting................................................................. 158
19.2.6 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 158
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RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1A - 2019.10