Table of contents
User reference guide
2
FTXF20~42C5V1B + ATXF20~42C5V1B
Daikin room air conditioner
4D520466-8D – 2021.06
Table of contents
1 General safety precautions 3
1.1 About the documentation .............................................................................................................................................. 3
1.1.1 Meaning of warnings and symbols ................................................................................................................ 3
1.2 For the user..................................................................................................................................................................... 4
2 About the documentation 6
2.1 About this document ...................................................................................................................................................... 6
2.2 User reference guide at a glance.................................................................................................................................... 6
3 About the system 8
3.1 Indoor unit ...................................................................................................................................................................... 8
3.2 About the user interface................................................................................................................................................. 9
3.2.1 Components: User interface .......................................................................................................................... 10
3.2.2 Status: User interface LCD.............................................................................................................................. 10
3.2.3 To operate the user interface ........................................................................................................................ 11
4 Before operation 12
4.1 Overview: Before operation ........................................................................................................................................... 12
4.2 To mount the user interface holder ............................................................................................................................... 12
4.3 To insert the batteries .................................................................................................................................................... 12
4.4 To turn on the power supply .......................................................................................................................................... 13
5 Operation 14
5.1 Operation range.............................................................................................................................................................. 14
5.2 When to use which feature ............................................................................................................................................ 14
5.3 Operation mode and temperature setpoint .................................................................................................................. 15
5.3.1 To start/stop operation mode and to set the temperature.......................................................................... 15
5.3.2 Airflow rate ..................................................................................................................................................... 16
5.3.3 Airflow direction ............................................................................................................................................. 16
5.3.4 Comfort airflow operation ............................................................................................................................. 17
5.3.5 Powerful operation......................................................................................................................................... 18
5.3.6 Econo operation ............................................................................................................................................. 19
5.3.7 OFF/ON timer operation ................................................................................................................................ 19
6 Energy saving and optimum operation 21
7 Maintenance and service 23
7.1 Overview: Maintenance and service .............................................................................................................................. 23
7.2 To clean the indoor unit and user interface................................................................................................................... 24
7.3 To clean the front panel ................................................................................................................................................. 25
7.4 About the air filters......................................................................................................................................................... 25
7.5 To clean the air filters ..................................................................................................................................................... 25
7.6 To take following items into account before a long idle period.................................................................................... 26
8 Troubleshooting 27
8.1 Symptoms that are NOT system malfunctions............................................................................................................... 29
8.1.1 Symptom: A sound like water flowing is heard ............................................................................................. 29
8.1.2 Symptom: A blowing sound is heard.............................................................................................................. 29
8.1.3 Symptom: A ticking sound is heard................................................................................................................ 29
8.1.4 Symptom: A whistling sound is heard............................................................................................................ 29
8.1.5 Symptom: A clicking sound during operation or idle time is heard .............................................................. 29
8.1.6 Symptom: A clapping sound is heard............................................................................................................. 29
8.1.7 Symptom: The units can give off odours ....................................................................................................... 29
8.1.8 Symptom: The outdoor fan rotates while the air conditioner is not in operation ....................................... 29
8.2 Solving problems based on error codes ......................................................................................................................... 30
9 Disposal 32
10 Glossary 33
