Nortec NH-EL Series - Manual (Page 80)

77 | Troubleshooting
Display Message LED
System
Detected
Cause Corrective Action(s)
Cylinder Spent
Yel
Red
Electrodes
covered with
scale.
1 Cylinder electrodes are
covered with scale and
humidifier cannot meet
demand
1 Replace cylinder with
same model number
(see maintenance
chapter)
Excess Current
Warning/Fault
Yel
Current has
exceeded 130%
of max Full Load
Amps
5 Water supply too
conductive
5a Contact Nortec
representative for
recommendation on
alternate cylinder
5b Change the water
supply
Red
6 Wrong cylinder installed 6 Install correct cylinder
model
7 Cylinder Spent but not
detected by software
7 Replace the cylinder
(see maintenance
chapter)
Fill Timeout
Warning / Fault
Fill valve
activated for long
time, but high
water level not
reached.
Water level in
cylinder should
rise faster than
1” per minute.
1 Drain valve leaking or
stuck open
1 Clean drain valve or
replace (see
maintenance chapter)
2 Water shut off valve
closed
2 Open shut off valve
3 Fill Valve strainer
blocked
3 Clean out strainer on fill
valve inlet.
Red
4 High system back
pressure
4a Check for kinked hose
4b Check for proper
condensate removal
(see installation
chapter)
4c Install fill cup
extension
5 Air flow into cylinder
through steam line
5 Disconnect steam line,
let cylinder fill part way,
then reconnect steam
line.
Foaming Cylinder
Warning / Fault
Red
Foam inside the
cylinder.
1 Back pressure
restricting water from
entering cylinder
1a Check for restrictions
and proper condensate
removal in steam line.
1b If water is going down
drain during fill cycle
then install fill cup
extension kit.
2 Organic material in
water
2 Install filter to remove
organic material
3 Drain blocked water
over concentrated
3 Clean the drain line