Daikin ETBH16E9W Installer's Reference Manual page 259

EPRA14~18D + ETBH/X16E
Daikin Altherma 3 H HT W
4P644736-1D – 2023.10
Error code
E6-00 OU: Compressor startup defect
E7-00 OU: Malfunction of outdoor unit fan motor
E8-00 OU: Power input overvoltage
E9-00
Malfunction of electronic expansion valve
EA-00
OU: Cool/heat switchover problem
EA-01 4WV switching error
EC-00 Abnormal increase tank temperature
EC-04 Tank preheating
F3-00 OU: Malfunction of discharge pipe temperature
F6-00 OU: Abnormal high pressure in cooling
FA-00 OU: Abnormal high pressure, actuation of HPS
H0-00 OU: Voltage/current sensor problem
H1-00 External temperature sensor problem
H3-00 OU: Malfunction of high pressure switch (HPS)
H4-00 Malfunction of low pressure switch
H5-00 Malfunction of compressor overload protection
H6-00 OU: Malfunction of position detection sensor
H8-00 OU: Malfunction of compressor input (CT)
system
H9-00 OU: Malfunction of outdoor air thermistor
HC-00 Tank temperature sensor problem
HC-01 Second tank temperature sensor problem
HJ-10 Water pressure sensor abnormality
J3-00 OU: Malfunction of discharge pipe thermistor
J3-10 Compressor port thermistor abnormality
J5-00 Malfunction of suction pipe thermistor
J6-00 OU: Malfunction of heat exchanger thermistor
J6-07 OU: Malfunction of heat exchanger thermistor
J6-32 Leaving water temperature thermistor
Abnormality (outdoor unit)
J6-33
Sensor communication error
J8-00
Malfunction of refrigerant liquid thermistor
JA-00 OU: Malfunction of high pressure sensor
JC-00 Low pressure sensor abnormality
14 Troubleshooting
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Description
Installer reference guide
259