Daikin Altherma EHBH08DA6V7 - Page 206

12 | Troubleshooting
Installer reference guide
206
ERGA04~08DAV3(A) + EHBH/X04+08DA*V7
Daikin Altherma 3 R W
4P618958-1 – 2020.03
Error code Detailed error code Description
AJ 03 Too long DHW heat-up time
required
C0 00 Water flow detected while pump is OFF
C0 01 Flow switch malfunction
C0 02 Flow switch malfunction
C4 00 Heat exchanger temperature
sensor problem
CJ 02 Room temperature sensor
problem
EC 00 Abnormal increase tank
temperature
EC 04 Tank preheating
H1 00 External temperature sensor
problem
HC 00 Tank temperature sensor
problem
HJ 10 Water pressure sensor
abnormality
JA 17 Refrigerant pressure sensor
abnormality
U3 00 Underfloor heating screed
dryout function not completed
correctly
U4 00 Indoor/outdoor unit
communication problem
U5 00 User interface communication
problem
U8 01 Connection with LAN adapter
lost
U8 02 Connection with room
thermostat lost
U8 03 No connection with room
thermostat
UA 17 Tank type problem
UA 21 Extension/hydro mismatch
problem
UA 22 Communication problem between
control box and option box