SKE Steam Humidifier
Installation Instructions and User Manual
37
14. Troubleshooting guide
Problem
Indicator
Display
Causes
Corrective actions
Humidifier does
not operate
(Power Off)
Power: Off
The humidifier is not
powered.
The low voltage fuse is
open.
The high temperature
switch is open.
Wires harnesses inside the
humidifier are not secured
properly.
Check for the main power
supply and fuses.
Check the transformer,
the low voltage fuse.
Check the high
temperature switch, the
wires harnesses and the
Main pc board.
Check: Off
Fill: Off
Steam: Off
Drain: Off
Humidifier does
not operate
(Power On)
Power: On
NEP 2. 5
SKE20M
The rocker switch is at the
OFF position.
Wire harness from the LED
display panel to the Main
pc board is not secured
properly.
Press the rocker switch to
the AUTO position.
Check the white color wire
harness.
Press the RESET button
on the Main pc board.
Check: Off
Fill: Off
Steam: Off
Drain: Off
Humidifier does
not produce
steam
(No Demand)
Power: On
Modulating humidifier: no
analog signal.
On/Off humidifier: no
demand from humidistat or
air flow is not detected by
air pressure switch or high
limit humidistat is open.
Control wires are not
properly secured to the
terminal blocks.
Verify the setting of the
humidistat.
Check the fan operation.
Check the operation of
the high limit humidistat.
Verify the connections of
the wires to the control
terminal blocks.
Check: Off
Fill: Off
Steam: Off
Drain: Off
Humidifier does
not produce
steam
(Safety Open)
Modulating
humidifiers only
Power: On
Air flow is not detected by
air pressure switch or high
limit humidistat is open.
Control wires are not
properly secured to the
terminal blocks.
Check the fan operation.
Check the operation of
the high limit humidistat.
Verify the wires to the
control terminal blocks #1
& 2.
Check: Off
Fill: Off
Steam: Off
Drain: Off
No water inside
the evaporation
chamber
Or
Humidifier will
not stop
draining
Power: On
Humidifier is filling with
water and has not reached
or is not reaching the high
of the water level sensor.
Humidifier is not filling with
water.
Check if the shut off valve
on the water supply line is
open.
Verify the operation of the
fill valve.
Check the fill valve
strainer and the external
strainer are not blocked.
Check: On
Fill: On
Steam: Off
Drain: Off
Humidifier is
always on
Foam cycle
Power: On
Excessive foaming
condition inside the
evaporation chamber.
Foaming sensor is
grounded.
Verify the quality of the
supply water.
Verify if chemical products
were used to clean the
evaporation chamber
during maintenance.
Rinse with water the
chamber properly.
Check the setting of the
Drain cycle. Reduce the
time between Drain
cycles.
Check: Off
Fill: On
Steam: Off
Drain: On
N O
D E M A N D
S A F E T Y
O P E N
N O
L E V E L
F O A M I N G
C Y C L E
