Daikin Altherma 3 H F - Page 181

14 | Troubleshooting
Installer reference guide
181
EPGA11~16DAV3(7) + EAVZ16S18+23DA6V(7)+9W
Daikin Altherma 3 H F
4P556075-1A – 2021.09
Error code Detailed error code Description
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
AA 02 External backup 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)
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
EC 00 Abnormal increase tank
temperature
EC 04 Tank preheating