Table 3. Nh System Messages - Nortec NH Series Installation Manual

NHTC Display Message
E5: Cylinder B Controller
missing
E6: Extendet Missing
E7: CPU CRC fault
W11: Safety Loop Open
W12: Cylinder Max Level
E12: Cylinder max Level no
current
W13: Fill Timeout
E13: Fill: Timeout
W15: Over current
E15: Over Current
W16: Excess Current
E16: Excess Current

Table 3. NH System Messages

LED state System Action
RED Humidifier is in standby until
problem corrected.
RED Humidifier activates its fault
relay and interrupts its operation
until communication is fixed.
RED Humidifier activates its fault
relay and interrupts operation.
GRN Humidifier goes on standby.
NONE Fill valve interrupted.
RED Humidifier activates its fault
relay and interrupts its
operation.
GRN The humidifier will attempt to
clear any debris by pulsing the
blink
drain valve.
RED The fill valve has been activated
for an extended period of time
but has not reached the sensor.
YEL The drain is activated to
decrease the water level in the
cylinder.
RED Humidifier interrupts operation
and the fault relay is activated.
YEL Humidifier interrupts operation
and the fault relay is activated.
RED Humidifier interrupts operation
and the fault relay is activated.
Symptom Diagnosed
On power up, the controller cannot
detect the driver board for cylinder B.
The slave unit is not in communication
with the master unit. Master unit
powered?
Problem with the processor hardware
or software.
ON/OFF controls wired between
terminal 1 and 2 are open.
Water at top of cylinder.
The high water sensor is activated but
no current is measured in cylinder.
The fill valve has been activated for an
extended period of time but water has
not reached the sensor.
Humidifier stops operation and the
fault relay is activated.
Measured current in the cylinder has
exceeded 115% of rated output.
Measured current in the cylinder has
exceeded 115% of rated output.
Measured current in the cylinder has
exceeded 115% of rated output.
Measured current in the cylinder has
exceeded 130% of rated output.
2008-08-28
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