Daikin Altherma 3 HT - Page 251

14 | Troubleshooting
Installer reference guide
251
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
Error code Description
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
JC-01 Evaporator pressure abnormality
L1-00 Malfunction of INV PCB