15 | Troubleshooting
Installer reference guide
281
ERLA11~16D + EBBH/X11+16D
Daikin Altherma 3 R W
4P643603-1B – 2022.05
INFORMATION
When error 7H-01 occurs, you might also see 7H-08 in the malfunction list of the
user interface. In this case the root cause can either be insufficient voltage towards
the pump or the pump is blocked.
INFORMATION
If error 89-05 or 89-06 occurs, check the minimum water volume during cooling.
INFORMATION
Error AJ-03 is reset automatically from the moment there is a normal tank heat-up.
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.
INFORMATION
Error EC-04 is reset automatically from the moment the domestic hot water tank is
preheated to a sufficiently high temperature.
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 will display how to reset an error code.
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