Neptronic SKE User Manual

14.

Trouble shouting guide

Problem Indicator
Power: Off
Check: Off
Humidifier does
not operate Fill: Off
(Power Off)
Steam: Off
Drain: Off
Power: On
Check: Off
Humidifier does
not operate Fill: Off
(Power On)
Steam: Off
Drain: Off
Power: On
Check: Off
Humidifier does
not produce
Fill: Off
steam
(No Demand)
Steam: Off
Drain: Off
Humidifier does Power: On
not produce
Check: Off
steam
Fill: Off
(Safety Open)
Steam: Off
Modulating
Drain: Off
humidifiers only
Power: On
No water inside
Check: On
the evaporation
chamber
Or Fill: On
Humidifier will
not stop
Steam: Off
draining
Drain: Off
Power: On
Check: Off
Humidifier is
Fill: On
always on
Foam cycle
Steam: Off
Drain: On
Display
 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.
 The rocker switch is at the
OFF position.
N E P 2 . 5
 Wire harness from the LED
S K E 2 0 M
display panel to the Main
pc board is not secured
properly.
 Modulating humidifier: no
analog signal.
 On/Off humidifier: no
demand from humidistat or
N O
air flow is not detected by
D E M A N D
air pressure switch or high
limit humidistat is open.
 Control wires are not
properly secured to the
terminal blocks.
 Air flow is not detected by
air pressure switch or high
S A F E T Y
limit humidistat is open.
O P E N
 Control wires are not
properly secured to the
terminal blocks.
 Humidifier is filling with
water and has not reached
N O
or is not reaching the high
L E V E L
of the water level sensor.
 Humidifier is not filling with
water.
 Excessive foaming
condition inside the
F O A M I N G
evaporation chamber.
C Y C L E
 Foaming sensor is
grounded.
SKE Humidifier
Causes
 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.
 Press the rocker switch to
the AUTO position.
 Check the white color wire
harness.
 Press the RESET button
on the Main pc board.
 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 the fan operation.
 Check the operation of
the high limit humidistat.
 Verify the wires to the
control terminal blocks #1
& 2.
 Verify if the drain valve is
manually open.
 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.
 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.

User Manual

Corrective actions
33