hajdu HB300 Manuel De Mise En Service, D'opération Et D'entretien page 88

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b) During the launch of self-protection, the buzzer will buzz every other
minute and the ALARM indicator will glitter fast, the error code and water
temperature are displayed at one after the other. Press CANCEL for 3
seconds to stop the alarm. The self-protection mechanisms solve the error and
the error code disappears from the display.
c) The appliance shall launch its self-protective mechanisms among the
following circumstances:
c.1) Air inlet or air outlet is blocked;
c.2) The evaporator is covered by too much dust;
c.3) The power source is inadequate (it exceeds the voltage range of
230V (±10%) )
REMARK
In case of self-protection of the appliance, it has to be disconnected from the
electrical power system manually and restarted after solving the error.
1) Water temperature display
1.a) The water temperature data concerns water in the upper part of the tank
(above 1/4), which is used by the user, but it does not cover all the quantity of the
water stored.
1.b) The 6 indicator displayed next to the water temperature data measures the
temperature of the lower part of the water. When water temperature exceeds 50C,
blue and yellow indicators are lit up. In case of water temperature of 60 C, the blue,
yellow and red indicators are lit up and finally, when all the collared indicators are lit
up, water has reached the desired temperature.
1.c) During water usage, it might happen that the temperature of the lower water
part decreases while the upper part temperature is still high, this time, the appliance
starts heating of the lower part. This is considered to be normal operation.
2) Error shooting
3) In case of frequent error, the appliance changes into Standby mode and stays
to be operative, but at a definitely lower efficiency than earlier. Please, turn to a
technician.
3.a) In case of serious error, the system can not operate further. Please, turn to a
technician.
3.b) In case of occurrence of error the buzzer will buzz every second minute, the
ALARM indicator will glitter faster, the ALARM indicator is lit up and the error code
and water temperature are displayed one after the other . In order to switch off the
alarm, please, press the CANCEL button for 3 seconds!
4) Restart after long shutdown
When the appliance is restarted after shutdown for a longer period (including pilot
mode), it is evident that outlet water is not clean. This time, the faucet must be kept
open and outflowing water becomes clean soon.
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