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

1.2

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

1.3

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

1.4

Cautions .......................................................................................................................................................................... 15

1.5

Notices ............................................................................................................................................................................ 15

2 General operation

3 Troubleshooting

3.1

To display the help text in case of a malfunction........................................................................................................... 18

3.2

To reset the error code................................................................................................................................................... 18

3.3

To check the malfunction history ................................................................................................................................... 19

3.4

To check the running hours of the system..................................................................................................................... 19

3.5

Error based troubleshooting........................................................................................................................................... 20

3.5.1

7H-01 - Water flow problem ......................................................................................................................... 20

3.5.2

7H-04 - Water flow problem during domestic hot water production.......................................................... 21

3.5.3

7H-05 - Water flow problem during heating/sampling ................................................................................ 22

3.5.4

7H-06 - Water flow during cooling/defrost................................................................................................... 23

3.5.5

7H-07 - Water flow problem. Pump de-blocking active ............................................................................... 24

3.5.6

7H-08 - Pump abnormality during normal operation (pump feedback) ...................................................... 24

3.5.7

80-01 - Entering water thermistor abnormality of outdoor unit ................................................................. 25

3.5.8

81-00 - Outlet water thermistor abnormality............................................................................................... 25

3.5.9

81-01 - Mixed water thermistor abnormality ............................................................................................... 26

3.5.10

81-06 - Entering water temperature thermistor abnormality (indoor unit)................................................ 26

3.5.11

81-07 - Mixed leaving water temperature after tank thermistor abnormality............................................ 26

3.5.12

89-01 - Heat exchanger freeze-up protection activated during defrost (error) .......................................... 27

3.5.13

89-02 - Heat exchanger freeze-up protection activated during heating/domestic hot water.................... 28

3.5.14

89-03 - Heat exchanger freeze-up protection activated during defrost (warning) ..................................... 28

3.5.15

89-05 - Heat exchanger freeze-up protection activated during cooling (error) .......................................... 29

3.5.16

89-06 - Heat exchanger freeze-up protection activated during cooling (warning) ..................................... 30

3.5.17

8F-00 - Abnormal increase outlet water temperature (domestic hot water).............................................. 31

3.5.18

8H-00 - Abnormal increase outlet water temperature................................................................................. 32

3.5.19

8H-01 - Overheating mixed water circuit...................................................................................................... 32

3.5.20

8H-02 - Overheating mixed water circuit (thermostat)................................................................................ 33

3.5.21

8H-03 - Overheating water circuit (thermostat)........................................................................................... 33

3.5.22

8H-08 - Overheating water circuit................................................................................................................. 34

3.5.23

A1-00 - Zero cross detection problem .......................................................................................................... 35

3.5.24

A5-00 - Outdoor unit: High pressure peak cut / freeze protection problem ............................................... 35

3.5.25

AA-01 - Backup heater overheated ............................................................................................................... 36

3.5.26

AH-00 - Tank disinfection function not completed correctly ....................................................................... 37

3.5.27

AJ-03 - Too long domestic hot water heat-up time required ....................................................................... 38

3.5.28

C0-00 - Flow sensor malfunction................................................................................................................... 39

3.5.29

C0-01 - Flow switch malfunction................................................................................................................... 39

3.5.30

C0-02 - Flow switch malfunction................................................................................................................... 40

3.5.31

C4-00 - Heat exchanger temperature sensor problem................................................................................. 41

3.5.32

C5-00 - Heat exchanger thermistor abnormality.......................................................................................... 41

3.5.33

CJ-02 - Room temperature sensor problem ................................................................................................. 42

3.5.34

E1-00 - Outdoor unit: PCB defect.................................................................................................................. 43

3.5.35

E2-00 - Leakage current detection error....................................................................................................... 44

3.5.36

E3-00 - Outdoor unit: Actuation of high pressure switch............................................................................. 45

3.5.37

E3-24 - High pressure switch abnormality .................................................................................................... 46

3.5.38

E4-00 - Abnormal suction pressure............................................................................................................... 47

3.5.39

E5-00 - Outdoor unit: Overheat of inverter compressor motor................................................................... 47

3.5.40

E6-00 - Outdoor unit: Compressor startup defect........................................................................................ 48

3.5.41

E7-00 - Outdoor unit: Malfunction of outdoor unit fan motor .................................................................... 49

3.5.42

E8-00 - Outdoor unit: Power input overvoltage ........................................................................................... 50

3.5.43

E9-00 - Malfunction of electronic expansion valve....................................................................................... 51

3.5.44

EA-00 - Outdoor unit: Cool/heat switchover problem ................................................................................. 52

3.5.45

EA-01 - 4-way valve switching error.............................................................................................................. 53

3.5.46

EC-00 - Abnormal increase tank temperature .............................................................................................. 54

3.5.47

EC-04 - Tank preheating ................................................................................................................................ 54

3.5.48

F3-00 - Outdoor unit: Malfunction of discharge pipe temperature............................................................. 55

3.5.49

F3-24 - Compressor shell temperature error................................................................................................ 55

3.5.50

F6-00 - Outdoor unit: Abnormal high pressure in cooling............................................................................ 56

EPRA14~18D + ETSH/X(B)16P30+50E

Daikin Altherma 3 H HT ECH₂O

ESIE22-11A - 2023.06