grandimpianti EB10, Use And Maintenance

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ALARM E3 FILTER HATCH MICRO SWITCH
DESCRIPTION ON DISPLAY E3: filter open
DESCRIPTION If the filter hatch is opened during machine functioning then all relays must be disabled except
the cycle relay and the display shows “
E3: filter open ”. The machine continues to display this
condition until the hatch is closed.
Timings ARE SUSPENDED until the filter hatch is closed. On closure the display changes and
passes to”
E3: press start ” continuing timings that were in progress.
BUZZER ACTIVATION Activation of the BUZZER is envisioned.
ALARM RESET The alarm is removed automatically when the hatch is closed.
WHAT TO CONTROL Filter hatch micro switch functioning.
Magnetic hatch catch hold.
Electric connection between hatch micro switch and G400 DRY board.
CORRECTIVE ACTION Check and replace the hatch micro switch if necessary.
Check and replace the magnetic hatch catch/es if necessary.
Check and, if necessary, replace the electric connection between the hatch micro switch and
the G400 DRY board.
ALARM E4 NO FLAME ANOMALY: MODELS WITH GAS HEATING ONLY
DESCRIPTION ON DISPLAY E4: No Flame
DESCRIPTION
This alarm is only managed in gas type heating. By means of alarm “ E4: No Flame ” it signals that
it is necessary to reset the burner management control unit.
This alarm is only managed during heating ignition, therefore with the HEAT relay at ON and
the gas supply powered. This alarm is delayed by 12 seconds with respect to the heating
ignition necessity condition, in a way to give the control unit time to perform the entire ignition
procedure.
If after a pre-established time that the control unit has received the burner ignition signal, HEAT
relay at ON, the control unit does not detect flame presence then the signal switches-over and
it is necessary to act on the gas reset button positioned on the rear of the appliance. The alarm
being reset is shown on the display.
Same sequence of controls if the flame should be missing during the heating ignition period (e.g.
the gas runs out....).
To allow manual reset of the control unit, and therefore re-ignition of the flame, even with the
alarm active, the HEAT relay remains at ON.
NOTES regarding the display.
On the appearance of “ E4: No Flame ” the operator must press the gas reset button must be
pressed and then timed messages are displayed “ E4: No Flame ” and “ E4: Press reset gas ”. On
pressing the reset gas button, wired directly onto the gas control unit, this becomes operational,
while the display goes back to normal by just pressing Enter. If there should still be problems
after attempting to ignite the flame, the control unit will switch-over the signal and the display
will show the alarm and so on.