Daikin EPRA16DAW1 Installer's Reference Manual page 233

EPRA14~18DAV3+W1 + ETBH/X16DA6V+9W
Daikin Altherma 3 H HT W
4P587501-1A – 2020.01
INFORMATION
If the booster heater overheats and is disabled by the thermostatic safety, the unit
will not give an error directly. Check if the booster heater is still in operation if you
experience one or more of the following errors:
▪
Powerful operation takes a very long time to heat up and the error code AJ-03 is
displayed.
▪
During anti-legionella operation (weekly), the error code AH-00 is displayed
because the unit cannot reach the requested temperature required for tank
disinfection.
INFORMATION
A malfunctioning booster heater will have an impact on energy metering and power
consumption control.
INFORMATION
The user interface of the indoor unit will display how to reset an error code.
13 Troubleshooting
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Installer reference guide
233