Daikin FDA125A5VEB - For the User

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For the user

Installer and user reference guide

FDA125A5VEB

Split system air conditioners

4P495031-1B – 2022.10

For the user

Main Page

Table of Contents2
About the Documentation4
About this Document4
Meaning of Warnings and Symbols5
General Safety Precautions7
For the Installer7
General7
Installation Site8
Refrigerant - in Case of R410A or R3211
Electrical13
Specific Installer Safety Instructions16
For the User19
User Safety Instructions20
General20
Instructions for Safe Operation21
About the System26
System Layout26
Information Requirements for Fan Coil Units27
User Interface28
Before Operation29
Operation30
Operation Range30
About Operation Modes30
Basic Operation Modes31
Special Heating Operation Modes31
To Operate the System31
Energy Saving and Optimum Operation32
Maintenance and Service33
Precautions for Maintenance and Service33
Cleaning the Air Filter and Air Outlet33
To Clean the Air Filter33
To Clean the Air Outlet34
Maintenance before a Long Stop Period34
Maintenance after a Long Stop Period35
About the Refrigerant35
Troubleshooting37
Symptoms that Are NOT System Malfunctions38
Symptom: the System Does Not Operate38
Symptom: White Mist Comes out of a Unit (Indoor Unit)39
Symptom: White Mist Comes out of a Unit (Indoor Unit, Outdoor Unit)39
Symptom: the User Interface Reads "U4" or "U5" and Stops, but then Restarts after a few Minutes39
Symptom: Noise of Air Conditioners (Indoor Unit)39
Symptom: Noise of Air Conditioners (Indoor Unit, Outdoor Unit)40
Symptom: Dust Comes out of the Unit40
Symptom: the Units Can Give off Odours40
Relocation41
Disposal42
For the Installer43
About the Box44
Indoor Unit44
To Unpack and Handle the Unit44
To Remove the Accessories from the Indoor Unit45
About the Units and Options46
Identification46
Identification Label: Indoor Unit46
About the Indoor Unit46
System Layout47
Combining Units and Options47
Possible Options for the Indoor Unit48
Unit Installation49
Preparing the Installation Site49
Installation Site Requirements of the Indoor Unit49
Mounting the Indoor Unit51
Guidelines When Installing the Indoor Unit51
Guidelines When Installing the Ducting54
Guidelines When Installing the Drain Piping55
Piping Installation59
Preparing Refrigerant Piping59
Refrigerant Piping Requirements59
Refrigerant Piping Insulation60
Connecting the Refrigerant Piping60
About Connecting the Refrigerant Piping60
Precautions When Connecting the Refrigerant Piping60
Guidelines When Connecting the Refrigerant Piping61
Pipe Bending Guidelines62
To Flare the Pipe End62
To Connect the Refrigerant Piping to the Indoor Unit63
Electrical Installation64
About Connecting the Electrical Wiring64
Precautions When Connecting the Electrical Wiring64
Guidelines When Connecting the Electrical Wiring65
Specifications of Standard Wiring Components67
To Connect the Electrical Wiring to the Indoor Unit67
Commissioning71
Overview: Commissioning71
Precautions When Commissioning71
Checklist before Commissioning71
To Perform a Test Run72
Configuration73
Field Setting73
Hand-Over to the User75
Troubleshooting76
Solving Problems Based on Error Codes76
Error Codes: Overview76
Disposal77
Technical Data78
Wiring Diagram78
Unified Wiring Diagram Legend78
Glossary81

Daikin FDA125A5VEB - For the User

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