Table of contents
User reference guide
2
FTXF20~42D5V1B + ATXF20~42D5V1B
Daikin room air conditioners
4D520466-13G – 2021.12
Table of contents
1 About the documentation 3
1.1 About this document ...................................................................................................................................................... 3
1.2 User reference guide at a glance.................................................................................................................................... 3
1.3 Meaning of warnings and symbols................................................................................................................................. 4
2 User safety instructions 6
2.1 General............................................................................................................................................................................ 6
2.2 Instructions for safe operation ....................................................................................................................................... 7
3 About the system 11
3.1 Indoor unit ...................................................................................................................................................................... 11
3.2 About the user interface................................................................................................................................................. 12
3.2.1 Components: User interface .......................................................................................................................... 13
3.2.2 Status: User interface LCD.............................................................................................................................. 13
3.2.3 To operate the user interface ........................................................................................................................ 14
4 Before operation 15
4.1 Overview: Before operation ........................................................................................................................................... 15
4.2 To mount the user interface holder ............................................................................................................................... 15
4.3 To insert the batteries .................................................................................................................................................... 15
4.4 To turn on the power supply .......................................................................................................................................... 16
5 Operation 17
5.1 Operation range.............................................................................................................................................................. 17
5.2 When to use which feature ............................................................................................................................................ 17
5.3 Operation mode and temperature setpoint .................................................................................................................. 18
5.3.1 To start/stop operation mode and to set the temperature.......................................................................... 18
5.3.2 Airflow rate ..................................................................................................................................................... 19
5.3.3 Airflow direction ............................................................................................................................................. 19
5.3.4 Comfort airflow operation ............................................................................................................................. 20
5.3.5 Powerful operation......................................................................................................................................... 21
5.3.6 Econo operation ............................................................................................................................................. 22
5.3.7 OFF/ON timer operation ................................................................................................................................ 22
6 Energy saving and optimum operation 24
7 Maintenance and service 25
7.1 Overview: Maintenance and service .............................................................................................................................. 25
7.2 To clean the indoor unit and user interface................................................................................................................... 26
7.3 To clean the front panel ................................................................................................................................................. 27
7.4 About the air filters......................................................................................................................................................... 27
7.5 To clean the air filters ..................................................................................................................................................... 27
7.6 To take following items into account before a long idle period.................................................................................... 28
8 Troubleshooting 29
8.1 Symptoms that are NOT system malfunctions............................................................................................................... 31
8.1.1 Symptom: A sound like water flowing is heard ............................................................................................. 31
8.1.2 Symptom: A blowing sound is heard.............................................................................................................. 31
8.1.3 Symptom: A ticking sound is heard................................................................................................................ 31
8.1.4 Symptom: A whistling sound is heard............................................................................................................ 31
8.1.5 Symptom: A clicking sound during operation or idle time is heard .............................................................. 31
8.1.6 Symptom: A clapping sound is heard............................................................................................................. 31
8.1.7 Symptom: The units can give off odours ....................................................................................................... 31
8.1.8 Symptom: The outdoor fan rotates while the air conditioner is not in operation ....................................... 31
8.2 Solving problems based on error codes ......................................................................................................................... 32
9 Disposal 34
10 Glossary 35