Daikin Altherma 3 WS EWSAH06UD 9W Series Installer's Reference Manual page 241

EWSAH/X06UD
Daikin Altherma 3 WS
4P675765-1 – 2022.04
Error code
U7-00 OU: Transmission malfunction between main
CPU- INV CPU
U8-01 Connection with LAN adapter lost
U8-02 Connection with room thermostat lost
U8-03 No connection with room thermostat
U8-04 Unknown USB device
U8-05 File malfunction
U8-07 P1P2 communication error
UA-00
Indoor unit, outdoor unit matching problem
UA-17 Tank type problem
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.
NOTICE
When the minimum water flow is lower than described in the table below, the unit
will temporarily stop operation and the user interface will display error 7H‑01. After
some time, this error will reset automatically and the unit will resume operation.
Minimum required flow rate
Heat pump operation
Cooling operation
Backup heater operation
INFORMATION
Error AJ-03 is reset automatically from the moment there is a normal tank heat-up.
15 Troubleshooting
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Description
No minimum required flow
10 l/min
No minimum required flow during
heating
Installer reference guide
241