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092
Main_contactor_current
(only ELDB)
A current is measured
though the main contactor
is not driven.
•
Main contactor con-
tact sticks
•
Replace main con-
tactor
093
Main_contactor_cyl._full
(only ELDB)
„Cylinder full“ is detected
though the main contactor
is not driven.
•
Main contactor con-
tact sticks
•
Replace main con-
tactor
120
Thermal switch (HKDB
only)
One of the thermal switches
has tripped.
•
Thermoswitch on
steam cylinder cover
has tripped due to lime
coating on heating ele-
ment
•
Switch off power
supply. Remove lime
coating. Allow cool-
down of steam cylin-
der. Push-back
unblocking pin on ther-
moswitch with needle-
nose pliers or a screw-
driver
•
Capillary tube defec-
tive
•
Replace thermo-
switch
•
Thermo switch on
solid state relay has
triggered due to
blocked ventilation
•
Switch off unit. Allow
cool-down of heat sink.
Remove blockage.
Ensure unobstructed
ventilation. Restart
humidifier operation.
121
Water_level_sensor (only
HKDB)
The water sensor reading is
not plausible.
•
Water sensor is
defective
•
Replace water sen-
sor
•
Connecting hoses
blocked
•
Clean hoses
These icons
are flashing
Fa
ult
code
Fault message
Possible cause
Measure