Daikin EAVH16S23DA6V Installer's Reference Manual page 199

EPGA11~16DAV3(7) + EAVH/X16S18+23DA6V(7)+9W(7)
Daikin Altherma 3 H F
4P556070-1A – 2021.09
Error code Detailed error code Description
UA 21
UA 22
UF 00
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
20 l/min
INFORMATION
Error AJ-03 is reset automatically from the moment there is a normal tank heat-up.
INFORMATION
In case of an E7‑62 error, brine pump operation stops due to not enough flow in the
brine circuit. If 10‑day brine pump operation is running, it will stop running and will
only resume once the error is reset. It is only possible to reset the error with the
domestic hot water home screen or the leaving water temperature home screen
turned ON. To reset the error, press
INFORMATION
If an U8‑04 error occurs, the error can be reset after a successful update of the
software. If the software is not successfully updated then you must make sure that
your USB device has the FAT32 format.
14 Troubleshooting
|
Extension/hydro mismatch
problem
Communication problem between
control box and option box
Trigger: Reversed piping or
bad communication wiring
detection Effect: Unit will
not start operation. Reset:
Manual reset
and confirm by pressing .
Installer reference guide
199