Daikin EPRA08EAV3, Installer'S Reference Manual

Page: 250 / 292

14 | Troubleshooting
Installer reference guide
250
EPRA08~W1 + ETVH/9W
Daikin Altherma 3 H MT F
4P634886-1 – 2021.03
Error code Description
8F-00 Abnormal increase outlet water temperature
(DHW)
8H-00 Abnormal increase outlet water temperature
8H-01 Overheating mixed water circuit
8H-02
Overheating mixed water circuit (thermostat)
8H-03
Overheating water circuit (thermostat)
A1-00 Zero cross detection problem
A5-00 OU: High pressure peak cut / freeze protection
problem
AA-01 Backup heater overheated or BUH power cable
not connected
AC-00 Booster heater overheated
AH-00 Tank disinfection function not completed
correctly
AJ-03 Too long DHW heat-up time required
C0-00 Flow sensor malfunction
C0-01 Flow switch malfunction
C0-02 Flow switch malfunction
C4-00 Heat exchanger temperature sensor problem
C5-00 Heat exchanger thermistor abnormality
CJ-02 Room temperature sensor problem
E1-00 OU: PCB defect
E2-00
Leakage current detection error
E3-00
OU: Actuation of high pressure switch (HPS)
E3-24
High pressure switch abnormality
E4-00 Abnormal suction pressure
E5-00 OU: Overheat of inverter compressor motor
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