SKE Humidifier
User Manual
34
Problem
Indicator
Display
Causes
Corrective actions
Power: On
Check: Blink
Fill: Off
Steam: On
Humidfier is
operating and
the CHECK
light is blinking
Drain: Off
SC RO LL
M O D E
The Running hours have
exceeded the Service
hours.
Service the evaporation
chamber, see section 14.
Reset the Running hours
to cancel the blinking of
the CHECK light, see
section 9.2 STEP 3.
Power: On
Check: On
Fill: Off
Steam: Off
Humidifier is not
operating and
the CHECK
light is ON
Drain: Off
O V E R
H E A T E D
The electronic temperature
sensor inside the water
level sensor had sensed
abnormal temperature.
The quick connector to the
water level sensor was
removed while the
humidifier was operating.
The brown wire connected
to the top left corner of the
Main pc board is not
properly secured.
Verify if the humidifier was
operating below the
standard water level then
replace the item J.
If connector was removed
while powered was still
ON then press on the
main pc board the TEST
button until the Drain light
is ON then press RESET
once.
Verify the connection of
the brown wire to the
Main pc board.
Power: On
Check: On
Fill: Off
Steam: Off
Humidifier is not
operating and
the CHECK
light is ON
Drain: Off
P RO B E
D E F E C TE D
The water level sensor is
damaged.
Replace the water level
sensor, item J.
Power: On
Check: On
Fill: Off
Steam: Off
Humidifier will
not drain
Drain: Off
D RN /P R O B
B L O C K
During a Drain or Foaming
cycle, the water level
sensor has sensed the
water level has not
decreased.
Verify the drain valve, the
fill and drain water pipe
connection, the water
level sensor chamber are
not obstructed.
Power: On
Check: Off
Fill: Off
Steam: Off
Humidifier does
not operate and
display is blank
Drain: Off
The following components
can be the cause of this
problem: water level sensor
(item J), main pc board
(item U), modulating pc
board (item V) or the LCD
display (item N).
Call factory for trouble
shooting instruction.
Power: On
Check: Off
Fill: Off
Steam: On
Humidifier is
producing
steam and
display is blank
Drain: Off
The potentiometer contrast
is set at the lowest setting.
The display ribbon cable is
not connected properly.
The LCD display is
defective.
Adjust the contrast of the
display.
Verify the connections of
the ribbon cable are
properly secured and on
the right side (red line on
cable).
Replace the LCD display,
item N.
