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4.7 Indications of the two-colour LED
4.8 System and servicing indications
Operation
Niveau max. attained
Manual drainage open
Code U1: Servicing signal
Code U2: Excess current
Code U3: Humidifier fills continuously
Code U4: Microcontroller uncoded
The newly-developed electronic controls unit with microcontroller
continuously monitors the operations of the NOVAP 3000 humidifier. Any
deviations from the operating condition (U codes) are shown with
the two-colour LED. The status of the LED can be shining continuously or
flashing in the red and green colours. The combination of these
different possibilities permits the indication of all U codes.
LED shining green continuously
The humidistat or humidity controller demands humidification. The NOVAP
3000 humidifier operates automatically. Without demand of humidity the
LED remains dark.
red flash in the shining green of the LED
Occurs when the Niveau max. sensor has been attained.
LED flashing red-green-red-green
When the manual drainage is activated by pressing the black button on
the electronic print.
LED flashing green
The steam cylinder can no longer attain the nominal output and needs,
therefore, to be cleaned or perhaps replaced. A visual inspection of the
inside of the cylinder is necessary to be able to decide whether it needs
replacing. Code U1 is purely a servicing code; the unit does not switch off
automatically. The humidifier continues to function at a reduced output.
Acknowledgement is effected by switching the unit off and on with the
black power switch.
LED shining red continuously
Whenever there is excess current (140% of the nominal value) during nor-
mal operations, the humidifier switches itself off automatically for safety
reasons. After the fault has been rectified, the humidifier is put back into
operation by switching the unit off and on with the black power switch.
LED flashing red
Either there is no heating phase or no water in the cylinder due to the
water supply having been cut off. The humidifier switches itself off
automatically after 30 minutes and is put back into operation by switching
the unit off and on with the black power switch.
LED flashing red-red-green-green
This signal appears if a replacement electronic controls unit has been
fitted to the humidifier without being coded. The humidifier is prevented
from operating. The signal disappears as soon as the electronic controls
unit has been coded.
