Nortec Industries None Diagnostic Procedures Troubleshooting Guide, Unit Status Lamp Symptom

DIAGNOSTIC PROCEDURES - TROUBLESHOOTING GUIDE

Unit Status Lamp
		Symptom		Corrective actions
Yellow	Green
On	On	Maximum water level	This usually happens on initial start-up after replacing the cylinder
		inside 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	Check for main power supply fault.
		board.	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	Off	Excess current.	Check drain valve operation, drain time, possible drain		restric-
sequence		Operating amperage	tions.
		exceeded 130% of	Check if fill valve leaks (not holding supply water).
		rated amps. Water is
			Back pressure may also cause very conductive water		conditions.
		drained from the
		cylinder (drain valve	Was the humidifier short cycling?
		on for 10 min.).
			Check for short cycling.
			Water conductivity too high.
2 flashes in	Off	No current	Check water level in the cylinder - should be more than ¼ full. If
sequence		detection for 30	not check fill rate, 24 VAC voltage on fill valve terminals (unit must
		minutes with	be on with call for humidity - green light steady on). Verify fresh
		continuous call for	water	supply to the humidifier. Leaking drain valve
		humidity.	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	Off	End of cylinder life -	Check water level in the cylinder, should be about ¾ full.
sequence		change cylinder.	Check for foaming if water level lower or cylinder life shorter than
			expected.
			Change cylinder, clean drain valve.

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