Table of contents
User Reference Guide
2
FTXP20~35M5V1B9
Daikin room air conditioners
4D520466-7C – 2020.03
Table of contents
1 General safety precautions 4
1.1 About the documentation .............................................................................................................................................. 4
1.1.1 Meaning of warnings and symbols ................................................................................................................ 4
1.2 For the user..................................................................................................................................................................... 5
2 About the documentation 7
2.1 About this document ...................................................................................................................................................... 7
2.2 User reference guide at a glance.................................................................................................................................... 7
3 About the system 9
3.1 Indoor unit ...................................................................................................................................................................... 9
3.1.1 Indoor unit display.......................................................................................................................................... 10
3.2 About the user interface................................................................................................................................................. 10
3.2.1 Components: User interface .......................................................................................................................... 11
3.2.2 Status: User interface LCD.............................................................................................................................. 12
3.2.3 To operate the user interface ........................................................................................................................ 14
4 Before operation 15
4.1 Overview: Before operation ........................................................................................................................................... 15
4.2 To insert the batteries .................................................................................................................................................... 15
4.3 To fix the user interface to the wall................................................................................................................................ 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.......................................................................... 19
5.4 Airflow rate ..................................................................................................................................................................... 20
5.4.1 To adjust the airflow rate ............................................................................................................................... 21
5.5 Airflow direction ............................................................................................................................................................. 21
5.5.1 To adjust vertical airflow direction ................................................................................................................ 22
5.5.2 To adjust horizontal airflow direction............................................................................................................ 22
5.5.3 To use 3-D airflow direction ........................................................................................................................... 22
5.6 Comfort airflow operation.............................................................................................................................................. 23
5.6.1 To start/stop Comfort airflow operation ....................................................................................................... 23
5.7 Powerful operation ......................................................................................................................................................... 23
5.7.1 To start/stop Powerful operation .................................................................................................................. 24
5.8 Econo operation.............................................................................................................................................................. 25
5.8.1 To start/stop Econo operation ....................................................................................................................... 25
5.9 OFF/ON timer operation................................................................................................................................................. 25
5.9.1 To start/stop OFF timer operation................................................................................................................. 26
5.9.2 To start/stop ON timer operation .................................................................................................................. 26
5.9.3 To combine OFF timer and ON timer............................................................................................................. 27
6 Energy saving and optimum operation 28
7 Maintenance and service 30
7.1 Overview: Maintenance and service .............................................................................................................................. 30
7.2 To clean the indoor unit and user interface................................................................................................................... 31
7.3 To clean the front panel ................................................................................................................................................. 31
7.4 About the air filters......................................................................................................................................................... 32
7.5 To open the front panel.................................................................................................................................................. 32
7.6 To clean the air filters ..................................................................................................................................................... 32
7.7 To clean the titanium apatite deodorizing filter and the silver particle filter (Ag-ion filter) ........................................ 34
7.8 To replace the titanium apatite deodorizing filter and the silver particle filter (Ag-ion filter) ..................................... 34
7.9 To close the front panel.................................................................................................................................................. 35
7.10 To take following items into account before a long idle period.................................................................................... 35
8 Troubleshooting 36
8.1 Symptoms that are NOT system malfunctions............................................................................................................... 39
8.1.1 Symptom: A sound like water flowing is heard ............................................................................................. 39
8.1.2 Symptom: A blowing sound is heard.............................................................................................................. 39
8.1.3 Symptom: A ticking sound is heard................................................................................................................ 39
8.1.4 Symptom: A whistling sound is heard............................................................................................................ 39
8.1.5 Symptom: A clicking sound during operation or idle time is heard .............................................................. 39
8.1.6 Symptom: A clapping sound is heard............................................................................................................. 39
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