Herrmidifier Co 6000 Problem / Symptom, Probable Cause, Reason - Correction, Overcurrent

Problem / Symptom	Probable Cause	Reason - Correction
Overcurrent	Dead short between electrodes.	Replace the steam cylinder. Check
The alarm condition occurs when an		resistance between electrodes with
overcurrent situation (>138% of rated		power “off”
current) has occurred and the
humidifier has shut down to prevent	Restricted or blocked drain.	Clean and inspect drain system.
any damage. This alarm indicates that
	Restricted fill system	Clean and inspect the fill system.
there has been a significant reduction
in resistance between the main legs of		Check for restriction or loss of supply
the supply power and the humidifier		pressure.
has been shut down to prevent	Incoming water conductivity is outside	Consult the factory for options.
damage and should be serviced	the range of normal circuit board
before it is restarted. Overcurrent LED	settings.
CR 17 (Figure 12) is illuminated.
	Check amp draw to unit during start-	Manually drain the unit and restart.
	up. If amp draw greatly exceeds rated
	amp draw, the drain threshold pot,
	labeled “% adj.” (R18), must be
	increased 2% to increase the
	frequency and duration of drains to
	reduce the conductivity inside the
	cylinder.
End of Cylinder	End of cylinder life – Cylinder life is	For emergency use, you may restart
This alarm condition occurs if the	typically between 500 and 2000 hours,	the humidifier with the capacity
humidifier is unable to reach full output	depending on incoming water supply.	setpoint, R39, at a lower level to allow
over a 6-hour timeframe. It is	(See unit operation section for typical	operation until a replacement steam
constantly switching between “fill” and	cylinder life expectancy chart on Pg.	cylinder can be obtained. To clear the
“cylinder full” modes. This alarm	5).	fault, turn the main disconnect to the
indicates a need to change the		unit “off” and then back “on”.
cylinder that the water supply is low in	If incoming water supply is less than	See – NON-FAULT ACTIVATED
conductivity that the water supply is	100 micromho, the unit may not be	PROBLEMS GUIDE – “Unit fills to the
low in conductivity, or that a foaming	able to pass the rated current through	cylinder full condition and remains
condition exists:	the water.	cold”
	Foaming condition exists.	Flush and fill the steam cylinder
		several times and restart. If it persists,
		you must filter or treat the water to
		remove the foaming agent. See circuit
		board settings on previous page if
		supply water is softened. See NON –
		FAULT ACTIVATED PROBLEMS
		GUIDE – “Water foaming inside the
		cylinder”
Fill System Fault	Loss of or restricted water supply	Check fill system.
This alarm condition occurs when the
fill valve has been energized for a 6-	Leaking drain system.	Check drain system.
hour timeframe. The humidifier has
	Defective drain valve.	Repair and replace as required.
been shutdown to prevent any
	Defective fill valve.	Repair and replace as required.
damage.

NOTE: The three fault conditions outlined above will cause the humidifier to shut down and the service light on the front of the unit to illuminate. To clear these faults, the main power must be turned “off” and back “on” again.

Unit Detected Faults: (Red “Service” Light On)

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