hajdu HB300C Manuel De Mise En Service, D'opération Et D'entretien page 94

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No hot water from
the outlet.
Water leakage
10.13. Self-protective mechanisms of the appliance
a) In case of self-protection, the appliance shuts down, starts auto-check
and re-starts when the defensive mechanisms are put into operation.
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
Outlet water is set an a low
temperature; Outlet water
temperature
controller is damaged; Circuit
board of indicating indicator is
damaged;
Tap water has been cut away;
Water pressure is too low; Inlet
valve has been closed.
The joints on the pipeline are
not sealed well.
It will return to normal after
water supplied; Use it when
the pressure is higher;
Open the inlet water valve.
Check and reseal all the
joints.