Meaning of warnings and symbols.................................................................................................................................

1.2

Dangers ...........................................................................................................................................................................

1.3

Warnings .........................................................................................................................................................................

1.4

Cautions .......................................................................................................................................................................... 14

1.5

Notices ............................................................................................................................................................................ 14

2 General operation

3 Troubleshooting

3.1

To display the error code on the user interface ............................................................................................................ 16

3.2

To reset the error code via remote controller ............................................................................................................... 16

3.3

To reset the error code via outdoor unit ....................................................................................................................... 16

3.4

To perform a test run...................................................................................................................................................... 16

3.4.1

To perform a test run in winter season ......................................................................................................... 17

3.4.2

To perform a test run using the user interface ............................................................................................. 17

3.5

Error based troubleshooting........................................................................................................................................... 17

3.5.1

A1-00 - PCB abnormality ............................................................................................................................... 17

3.5.2

A5-00 - Outdoor unit: High pressure peak cut / freeze protection problem ............................................... 18

3.5.3

A6-00 - Indoor unit fan motor abnormality .................................................................................................. 19

3.5.4

AH-00 - Streamer unit abnormality............................................................................................................... 19

3.5.5

C4-00 - Heat exchanger temperature sensor problem................................................................................. 20

3.5.6

C9-00 - Room thermistor abnormality .......................................................................................................... 20

3.5.7

CC-00 - Humidity sensor abnormality ........................................................................................................... 21

3.5.8

CE-00 - Intelligent thermal sensor abnormality............................................................................................ 21

3.5.9

E1-00 - Outdoor unit: PCB defect.................................................................................................................. 22

3.5.10

E3-00 - Outdoor unit: Actuation of high pressure switch............................................................................. 23

3.5.11

E5-00 - Outdoor unit: Overheat of inverter compressor motor................................................................... 24

3.5.12

E6-00 - Outdoor unit: Compressor startup defect........................................................................................ 25

3.5.13

E7-00 - Outdoor unit: Malfunction of outdoor unit fan motor .................................................................... 26

3.5.14

E8-00 - Outdoor unit: Power input overvoltage ........................................................................................... 26

3.5.15

EA-00 - Outdoor unit: Cool/heat switchover problem ................................................................................. 27

3.5.16

F3-00 - Outdoor unit: Malfunction of discharge pipe temperature............................................................. 28

3.5.17

F6-00 - Outdoor unit: Abnormal high pressure in cooling............................................................................ 29

3.5.18

F8-00 - System shutdown due to compressor internal temperature abnormality...................................... 29

3.5.19

H0-00 - Outdoor unit: Voltage/current sensor problem .............................................................................. 30

3.5.20

H3-00 - Outdoor unit: Malfunction of high pressure switch ........................................................................ 31

3.5.21

H6-00 - Outdoor unit: Malfunction of position detection sensor ................................................................ 32

3.5.22

H8-00 - Outdoor unit: Malfunction of compressor input system................................................................. 33

3.5.23

H9-00 - Outdoor unit: Malfunction of outdoor air thermistor ..................................................................... 33

3.5.24

J3-00 - Outdoor unit: Malfunction of discharge pipe thermistor................................................................. 34

3.5.25

J6-00 - Outdoor unit: Malfunction of heat exchanger thermistor ............................................................... 34

3.5.26

L3-00 - Outdoor unit: Electrical box temperature rise problem................................................................... 34

3.5.27

L4-00 - Outdoor unit: Malfunction of inverter radiating fin temperature rise ............................................ 35

3.5.28

L5-00 - Outdoor unit: Inverter instantaneous overcurrent .......................................................................... 36

3.5.29

P4-00 - Outdoor unit: Malfunction of radiating fin temperature sensor ..................................................... 37

3.5.30

U0-00 - Outdoor unit: Shortage of refrigerant ............................................................................................. 37

3.5.31

U2-00 - Outdoor unit: Defect of power supply voltage ................................................................................ 38

3.5.32

U4-00 - Indoor/outdoor unit communication problem................................................................................ 39

3.5.33

UA-00 - Indoor unit, outdoor unit mismatching problem ............................................................................ 40

3.6

Symptom based troubleshooting ................................................................................................................................... 42

3.6.1

Operation does not start................................................................................................................................ 42

3.6.2

Operation sometimes stops ........................................................................................................................... 42

3.6.3

Operation starts but the unit does not cool/heat ......................................................................................... 43

3.6.4

Operating noise and vibrations ...................................................................................................................... 44

3.6.5

Abnormal high pressure ................................................................................................................................. 45

3.6.6

Abnormal low pressure .................................................................................................................................. 46

3.6.7

Indoor fan starts operating but the compressor does not operate.............................................................. 47

3.6.8

Operation starts and the unit stops immediately.......................................................................................... 48

3.6.9

Operation stops, unit cannot start for a while .............................................................................................. 48

3.6.10

Unit discharges white mist ............................................................................................................................. 49

3.6.11

Humidifying problem...................................................................................................................................... 49

3.6.12

Swing flap does not operate .......................................................................................................................... 49

4 Components

RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)

(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B

R32 Optimized Heating 4 Split

ESIE21-12A - 2022.02