Nortec Industries None - Manual (Page 9)

DIAGNOSTIC PROCEDURES - TROUBLESHOOTING GUIDE
Unit Status Lamp
Symptom Corrective actions
Yellow Green
On On Maximum water level
inside cylinder. This usually happens on initial start-up after replacing the cylinder
(normal).
Water is concentrated with minerals inside the cylinder.
Let unit run, yellow light will disappear when the unit is at full
output. This may take a day or two.
Off Off No power to the
board. Check for main power supply fault.
Turn power switch to ‘Drain’ position. If drain valve is activated
(sound of solenoid), check connection to the board or board itself.
When no sound present, check fuse (replace with 3.0 A if needed),
transformer (voltage should be present between fuse holder and
ground screw).
1 flash
sequence Off Excess current.
Operating amperage
exceeded 130% of
rated amps. Water is
drained from the
cylinder (drain valve
on for 10 min.). Check drain valve operation, drain time, possible drain restric-
tions.
Check if fill valve leaks (not holding supply water).
Back pressure may also cause very conductive water conditions.
Was the humidifier short cycling?
Check for short cycling.
Water conductivity too high.
2 flashes in
sequence Off No current
detection for 30
minutes with
continuous call for
humidity. Check water level in the cylinder - should be more than ¼ full. If
not check fill rate, 24 VAC voltage on fill valve terminals (unit must
be on with call for humidity - green light steady on). Verify fresh
water
supply to the humidifier. Leaking drain valve
can be at fault (minerals blocking the plunger).
If cylinder is more than ¼ full, check primary power, connections to
the cylinder, continuity of wires to cylinder.
Are power wires connected to proper terminals on the cylinder?
(Color coding)
Possibly wrong cylinder type.
Low water conductivity.
4 flashes in
sequence Off End of cylinder life -
change cylinder. Check water level in the cylinder, should be about ¾ full.
Check for foaming if water level lower or cylinder life shorter than
expected.
Change cylinder, clean drain valve.
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