Daikin R32 Split Series - Page 105

14 | Troubleshooting
Installer reference guide
105
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680077-1 – 2021.11
Error code Description
P4-00 OU: Malfunction of radiating fin temperature
sensor
PJ-00 Capacity setting mismatch
U0-00 OU: Shortage of refrigerant
U2-00 OU: Defect of power supply voltage
U4-00 Indoor/outdoor unit communication problem
U5-00 User interface communication problem
U6-38 Extension/hydro communication problem
U7-00 OU: Transmission malfunction between main CPU-
INV CPU
U8-04 Unknown USB device
U8-05 File malfunction
U8-07 P1P2 communication error
U8-09 MMI software version {version_MMI_software} /
Indoor unit [version_IU_modelname]
compatibility error
U8-11 Connection with the Wireless gateway lost
UA-00 Indoor unit, outdoor unit matching problem
UA-17 Tank type problem
UF-00 Reversed piping or bad communication wiring
detection.
UH-00 Indoor unit malfunction or frost in other
indoor units
INFORMATION
In case of error code F3-00, there is a possible risk of refrigerant leak.
INFORMATION
In case of error code AH and no interruption of the disinfection function occurred
due to domestic hot water tapping, following actions are recommended:
▪ When the Reheat only or Schedule + reheat mode is selected, it is
recommended to program the start-up of the disinfection function at least
4hours later than the last expected large hot water tapping. This start-up can be
set by installer settings (disinfection function).
▪ When the Schedule only mode is selected, it is recommended to program an
Eco action 3hours before the scheduled start-up of the disinfection function to
preheat the tank.
INFORMATION
Error AJ-03 is reset automatically from the moment there is a normal tank heat-up.