Daikin Altherma 3 GEO Series - Page 223

14 | Troubleshooting
Installer reference guide
223
EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
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
AH-00 Tank disinfection function not completed
correctly
AJ-03 Too long DHW heat-up time required
C0-00 Flow sensor malfunction
C1-10 ACS communication malfunction
C1-11 ACS communication malfunction
C4-00 Heat exchanger temperature sensor problem
C5-00 Heat exchanger thermistor abnormality
C8-01 Current sensor abnormality
CJ-02 Room temperature sensor problem
E1-00 OU: PCB defect
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
E7-63 Brine pump error
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
EJ-01 Brine circuit pressure low
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