Troubleshooting - Neptronic SKE4-E05 Installation Instructions And User Manual

Troubleshooting

Table 14 - Troubleshooting Guide
Problem
Humidifier does not operate
(Screen turned Off)
Humidifier does not operate
(Screen turned On, Status
Display LED: Off)
Humidifier does not produce
steam (No demand)
No water inside the
evaporation chamber or
Humidifier does not stop
draining
Humidifier does not drain
Humidifier is always on Foam
cycle (FoamCutout setting
displays Foam)
Humidifier is operating and
the Status Display LED is
Red (ServiceDue setting
displays On)
Humidifier is not operating
and the Status Display LED
is Red (ThermalCutout
setting displays Open)
Humidifier does not operate
(Screen turned Off, Status
Display LED: Blue)
Humidifier is producing steam
(Screen turned Off, Status
Display LED: Blue)
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Installation Instructions and User Manual
Possible Cause
Power is not being supplied to the
humidifier.
The low voltage fuse is open.
Wire harnesses inside the humidifier
are not secured properly.
The humidifier is not powered on.
For modulating humidifier:
No analog signal detected.
For On/Off humidifier:
No demand from humidistat.
Air flow is not detected by air
pressure switch.
High limit humidistat is open.
Interlock contact is open.
Control wires are not properly
secured to the terminal blocks.
Humidifier is being filled with water
but has not yet reached or does not
reach the high limit of the water level
sensor.
Humidifier is not being filled with
water.
Drain valve is clogged.
During a drain or foaming cycle, the
water level sensor has sensed that
the water level has not decreased.
Excessive foaming condition inside
the evaporation chamber.
The humidifier is due for servicing.
The high temperature switch has
sensed abnormal temperature.
The following components can be
the cause of this problem: water
level sensor, PC board or LCD
display.
The display FFC cable is not
connected properly.
The LCD display is defective.
SKE4-E Steam Humidifier
Corrective Action
Check the main power supply and fuses.
Verify the circuit breaker disconnect switch.
Check the transformer and the low voltage
fuse. Verify that the low voltage circuit is
complete.
Check the wires harnesses and the main PC
board. Verify that all connections have been
made properly.
Verify that the Power button has been
pressed and held for 3 seconds for correct
activation.
Verify the setting of the control input.
Verify the setting of the humidistat.
Check the fan operation.
Check the operation of the high limit
humidistat.
Check the interlock contact.
Verify the connections of the wires to the
control terminal blocks.
- Verify that the drain valve is open.
- Check if the shutoff valve on the water
supply line is open.
- Verify the operation of the fill valve.
- Check that the fill valve strainer and the
external strainer are not blocked.
Check the drain valve.
Verify that the drain pump, the fill and drain
water pipe connections and the water level
sensor chamber are not obstructed.
- Verify the quality of the supply water.
- Verify if chemical products were used to
clean the evaporation chamber during
maintenance. Rinse the chamber properly
with water.
- Check the setting of the drain cycle. Reduce
the time between drain cycles.
Service the evaporation chamber (see
Service section on page 52).
Use Request setting in Service menu to reset
counters (see page 44).
Verify if the humidifier was operating below
the standard water level. Replace water level
sensor if necessary.
Call factory for troubleshooting instructions.
Verify that the connections of the FFC cable
are properly secured and are on the correct
side.
Replace the LCD display.
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