The following table shows the error codes and the corresponding
solution for the problem.
Error
code
Cause Remedy Personnel
01 The water tank is empty.
n Check the water level. Top off the water tank, if
required (
Ä
Chapter 5.3 “Filling the water tank”
on page 32).
n Check the water level electrodes for contamina-
tion and clean them if required (
Ä
Chapter
6.3.1 “Monthly cleaning” on page 40).
n Was distilled water used? If yes, top off with tap
water.
n Check the connection of the water level elec-
trodes.
n If an automatic water supply is used, check it for
functionality.
User
02 The UV lamp (optional
accessory) is defective.
n Replace the UV lamp (
Ä
Chapter
8.6.2 “Replacing the UV lamp” on page 70).
User
03 There is water leakage (only
possible with external water
sensors (optional acces-
sory)).
n Check that the filter fits correctly.
n Check that the device is placed on a level sur-
face.
n If an automatic water supply is used, check it for
functionality and leak tightness.
n Check the water tank for leaks.
User
04 The water tank is over-full
(only possible with an auto-
matic water supply (optional
accessory)).
n Check the functionality of the solenoid valve.
n Check the water level electrodes for contamina-
tion and clean them if required (
Ä
Chapter
6.3.1 “Monthly cleaning” on page 40).
User
05 Missing radio signal from the
wireless sensor system. The
receiver on the control panel
has not received a signal for
a long period of time.
n Since the wireless sensor system sends a signal
only every three minutes, this error always
appears when switching the humidifier on. The
malfunction indication disappears automatically
after three minutes at the latest.
n Decrease the distance between the wireless
sensor system and the humidifier to max. 30
meters (98 feet). Concrete and steel walls can
impair reception.
n Check the functionality of the wireless sensor
system. If necessary, replace the batteries
(
Ä
“Commissioning the wireless sensor system”
on page 25).
n Check the coding of the wireless sensor system
(
Ä
Chapter 4.4 “Coding the wireless sensor
system” on page 27).
User
09 Several errors occurred at
the same time.
n Check the device as described in errors 01 - 05.
User
Error code display
Detecting and remedying malfunctions
Evaporation Humidifier B500 Professional50
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