identically coded to the one sensor, or of operating each
one independently, each with a separate sensor and
different codings . Please proceed as follows .
Procedure:
1 . Carefully lift the cover of the radio sensor with a
small screwdriver and take it off .
2 . Code the radio sensor by setting the slide control
with a small screwdriver .
3 . Remove the housing of the B 500 air humidifier .
4 . Loosen the four of screws on the top side of the con-
trol panel and lift it off .
5 . Code the receiver circuit board on the rear side of
the control panel by setting the slide control with a
small screwdriver .
m The coding of the radio sensor and of the
receiver circuit board must match exactly
(note ON and OFF). Otherwise there is no
certainty that the system will function.
Fault code Fault
01
Water tank is empty
02
UV lamp defective
03
Water leaking
(only possible with external
water sensor)
04
Water tank overfilled
(only possible with automatic
water supply)
05
No radio signal from hygros-
tat . The receiver on the con-
trol panel has not received a
signal for a quite some time .
09
Several faults have occurred
simultaneously
EN
6 . Close the cover of the radio sensor again .
7 . Fasten the control panel down again with the four
screws and set the top part of the housing onto it .
8 . Breathe lightly on the radio sensor to check the
functioning of the system
15. Fault code display
The B 500 Professional has an independent monitor-
ing system that gives you the possibility of spotting
errors quickly and reacting accordingly .
The fault display can be combined with an acoustic sig-
nal so that a „beep" can be heard in addition to the dis-
play being shown . You can select this setting yourself .
Please refer to the section on „Menu programming" .
The following fault codes tell you what problem has
occurred and what has to be done .
m If a fault code is displayed, only the On/Off
button and the PROG and SET key on the re-
mote control unit can be used.
What to do?
• Check water level and top up if necessary .
• Check water level diodes for dirt and clean if necessary .
• Has distilled water been used? If so, top up with plain tap
water .
• Check the diodes connection .
• Is the automatic water supply defective? (optional extra)
• Replace UV lamp . (see „Changing the UV tube")
• Check whether the filter has been inserted correctly .
• Check whether the appliance is standing upright .
• Check whether the automatic water supply is working cor-
rectly (if fitted) .
• Check tank for leaks .
• Check the function of the magnetic valve .
• Check the water level diodes for dirt .
• Is the radio transmitter too far away from the appliance?
• Check the function and coding of the radio transmitter (see
„Starting up" / „Coding the radio sensor system") .
• Replace the batteries if necessary .
• Check the appliance as described for Faults 01 to 04 .
Operating Manual – Electronic Humidifier
B - 7