Daikin FTXF A Series User Manual

Table of contents
Service manual
4
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
Table of contents
1 Troubleshooting 6
1.1 To display the error code on the user interface ............................................................................................................ 6
1.2 To reset the error code via remote controller ............................................................................................................... 6
1.3 To reset the error code via outdoor unit ....................................................................................................................... 6
1.4 To perform a test run...................................................................................................................................................... 6
1.4.1 To perform a test run in winter season ......................................................................................................... 7
1.5 Error based troubleshooting........................................................................................................................................... 7
1.5.1 A1-00 – PCB abnormality ............................................................................................................................... 7
1.5.2 A5-00 – Outdoor unit: High pressure peak cut / freeze protection problem ............................................... 8
1.5.3 A6-00 – Indoor unit fan motor abnormality .................................................................................................. 9
1.5.4 C4-00 – Heat exchanger temperature sensor problem................................................................................. 9
1.5.5 C9-00 – Room thermistor abnormality.......................................................................................................... 10
1.5.6 E1-00 – Outdoor unit: PCB defect.................................................................................................................. 10
1.5.7 E3-00 – Outdoor unit: Actuation of high pressure switch............................................................................. 11
1.5.8 E5-00 – Outdoor unit: Overheat of inverter compressor motor................................................................... 12
1.5.9 E6-00 – Outdoor unit: Compressor startup defect........................................................................................ 13
1.5.10 E7-00 – Outdoor unit: Malfunction of outdoor unit fan motor .................................................................... 14
1.5.11 E8-00 – Outdoor unit: Power input overvoltage ........................................................................................... 14
1.5.12 EA-00 – Outdoor unit: Cool/heat switchover problem ................................................................................. 15
1.5.13 F3-00 – Outdoor unit: Malfunction of discharge pipe temperature............................................................. 16
1.5.14 F6-00 – Outdoor unit: Abnormal high pressure in cooling............................................................................ 17
1.5.15 F8-00 – System shutdown due to compressor internal temperature abnormality...................................... 18
1.5.16 H0-00 – Outdoor unit: Voltage/current sensor problem .............................................................................. 18
1.5.17 H3-00 – Outdoor unit: Malfunction of high pressure switch ........................................................................ 19
1.5.18 H6-00 – Outdoor unit: Malfunction of position detection sensor ................................................................ 20
1.5.19 H8-00 – Outdoor unit: Malfunction of compressor input system................................................................. 21
1.5.20 H9-00 – Outdoor unit: Malfunction of outdoor air thermistor ..................................................................... 21
1.5.21 J3-00 – Outdoor unit: Malfunction of discharge pipe thermistor................................................................. 22
1.5.22 J6-00 – Outdoor unit: Malfunction of heat exchanger thermistor ............................................................... 22
1.5.23 L3-00 – Outdoor unit: Electrical box temperature rise problem................................................................... 22
1.5.24 L4-00 – Outdoor unit: Malfunction of inverter radiating fin temperature rise ............................................ 23
1.5.25 L5-00 – Outdoor unit: Inverter instantaneous overcurrent .......................................................................... 24
1.5.26 P4-00 – Outdoor unit: Malfunction of radiating fin temperature sensor ..................................................... 25
1.5.27 U0-00 – Outdoor unit: Shortage of refrigerant ............................................................................................. 25
1.5.28 U2-00 – Outdoor unit: Defect of power supply voltage ................................................................................ 26
1.5.29 U4-00 – Indoor/outdoor unit communication problem................................................................................ 27
1.5.30 UA-00 – Indoor unit, outdoor unit mismatching problem ............................................................................ 28
1.6 Symptom based troubleshooting ................................................................................................................................... 29
1.6.1 Operation does not start................................................................................................................................ 29
1.6.2 Operation sometimes stops ........................................................................................................................... 29
1.6.3 Operation starts but the unit does not cool/heat ......................................................................................... 30
1.6.4 Operating noise and vibrations...................................................................................................................... 31
1.6.5 Abnormal high pressure ................................................................................................................................. 32
1.6.6 Abnormal low pressure .................................................................................................................................. 33
1.6.7 Indoor fan starts operating but the compressor does not operate.............................................................. 34
1.6.8 Operation starts and the unit stops immediately.......................................................................................... 35
1.6.9 Operation stops, unit cannot start for a while .............................................................................................. 35
1.6.10 Unit discharges white mist ............................................................................................................................. 36
1.6.11 Swing flap does not operate .......................................................................................................................... 36
2 Components 37
2.1 4-way valve...................................................................................................................................................................... 37
2.1.1 Checking procedures...................................................................................................................................... 37
2.1.2 Repair procedures .......................................................................................................................................... 41
2.2 Compressor ..................................................................................................................................................................... 44
2.2.1 Checking procedures...................................................................................................................................... 44
2.2.2 Repair procedures .......................................................................................................................................... 49
2.3 Expansion valve............................................................................................................................................................... 53
2.3.1 Checking procedures...................................................................................................................................... 53
2.3.2 Repair procedures .......................................................................................................................................... 56
2.4 High pressure switch....................................................................................................................................................... 61
2.4.1 Checking procedures...................................................................................................................................... 61
2.4.2 Repair procedures .......................................................................................................................................... 63
2.5 Indoor unit fan motor ..................................................................................................................................................... 64
2.5.1 Checking procedures...................................................................................................................................... 64

Daikin FTXF A Series Specifications

General

Brand	Daikin
Model	FTXF A Series
Category	Air Conditioner
Language	English