LEGALLAIS HB300 Manuel De Mise En Service, D'opération Et D'entretien page 68

In case of continuous 20 hours when the season ambient temperature does
not meet the heat pump operation requirements (beyond the range of -7 ~ 43°C),
"LA" error code will be displayed at TEMP SET window and the ALARM indicator will
flash simultaneously signing that the temperature does not meet the heat pump
performance. This time, only E-heating Mode can be set under these circumstances.
Please switch to E-heating Mode manually to ensure that the quantity and
temperature of hot water supplied should be adequate. When this is the case, the
error code disappears and indicator alarm stops flashing and everything sets back to
normal operation
Error shooting
If some error happens, the buzzer will buzz 3 times every other minute and the
ALARM indicator will glitter fast. Press CANCEL for several seconds to stop the
buzzer but the light will keep glittering.
The error code from the screen of SET TEMP. will be displayed when
malfunctioning happens, the system then displays an error code after one minute.
Press the SET TEMP key again to set the temperature on the screen
When malfunctioning happens in Economy Mode, the system switches to E-
heater Mode and goes on operating. When some error happens, the system could
be used under some circumstances, but it can not reach the expected efficiency.
Please contact your contracted distributor for help
Error code explanation (See Table 4.5-1. )
Warning code of disagree with heat pump mode.
The light will glitter in error.
Warning code of disagree with heat pump mode.
The light will glitter in error.
Press CANCEL key to stop the buzzer.
The error code is displayed.