Sep Faults - Nortec SE Series Installation And Operation Manual

Nortec SEP Faults
The self-diagnostic system built into the Nortec SEP can display some fault conditions by
flashing the yellow "Service" LED in sequence. The Nortec SEP does not display any warnings.
Faults
 If the humidifier is not able to self correct a problem symptom it will if necessary respond by
shutting itself down.
 When this occurs the humidifier illuminates the red "Fault" LED, Flashes the yellow LED in a
numerical sequence, shuts off the signal to the CV valve actuator, and activates the "Error"
relay of the remote relay board.
Clearing a Fault
 Count the number of flashes of the yellow LED and take any necessary actions to correct the
cause(s) as outlined in Table 14: Troubleshooting Nortec SEP Faults.
 Power cycle the humidifier with the On/Off switch waiting 3 seconds between turning it off
and on.
Number of System Detected
Flashes / Fault
One Flash
Water level is not
dropping when
Humidifier Drain
pump is activated.
Fault
Two Flashes
Water level not
rising or not
Humidifier Fill
detected.
Fault
Floats have
Four Flashes
indicated water
Inconsistent
level not changing
Float Level
in sequence.
Table 14: Troubleshooting SEP Faults
Cause
1 Internal drain Check if water drains from unit when drain
blocked manually activated. If not then;
1a Check restrictor in drain line immediately after
1b Check pump rotor to see if it is blocked.
1c Check if scale has built up in sump at bottom of
2 External drain 2 Check that water can flow freely through drain
blocked
1 Water shut off 1 Open shut off valve
valve closed
2 Auxiliary drain 2a Close auxiliary drain valve if unit does not have
leaking
2b Check freeze protection valve is closed if freeze
3 Fill valve 3 Clean out strainer on fill valve inlet.
strainer blocked
1 High cooling 1a Check that orifice in fill valve is in place. Flow
flow into float
chamber
1b Check if tank fill and float cooling lines are
2 Defective float 2 Observe LED's on float chamber as tank fills. If
board.
Corrective Action(s)
pump for blockage.
tank and caused a blockage.
lines.
freeze protection.
protection installed.
should be very low.
reversed. Flow to float chamber should be very
low. Tank hoses to centre of float chamber.
LED's do not light in sequence replace float
chamber and float board.
Troubleshooting | 82