American Power Conversion Central Air Conditioning System manual Displayed Alarm Message

	Operation: Respond to Alarms
Displayed Alarm Message	Action Required
Humidifier Cylinder Depleted	• Replace the disposable cylinder.
	• Clean the reusable humidifier cylinder (optional).
Humidifier Cylinder Full when	• Check the humidifier drain valve for clogging.
Off	• Check the operation of the humidifier drain solenoid.
Humidifier Drain Malfunction	• Ensure that the drain is free of any debris.
	• Verify the operation of the drain solenoid valve.
Humidifier Excessive Foam	• Verify that the humidifier water supply is not using conditioned water and
	that the water does not contain contaminates.
	• Check the humidifier water supply hose for dirt and contaminates.
	• Check the steam supply hose for kinks that may cause back-pressure.
Humidifier Excessive Output	• Reduce the humidifier sensitivity setting on the display interface (Path:
Reduction	Main > Setup > System # > System Config > Humid. Sensitivity) if
	necessary.
Humidifier Fault Tolerance	• The humidifier has experienced three faults within one-half hour.
Exceeded	• Reset the humidifier from the display interface (Path: Main > Setup >
	Module > [Module in which the alarm occurred] > Module Control >
	Reset Humidifier).
Humidifier Internal Memory	• Check the controller connections to the humidifier for electrical discharge.
Error
Humidifier No Power	• Verify that the circuit breaker for the humidifier has not been tripped.
	• Confirm that the line voltage connections to the cylinder are secure and
	correct.
Humidifier Requires	• Verify the operation of the humidifier and perform preventive maintenance.
Maintenance	• Reset the maintenance alarm on the display interface for the humidifier.
Humidifier Water Conductivity	• Verify that the proper voltage is being applied to the humidifier cylinder.
High	• Confirm that the line voltage connections to the cylinder are secure and
	correct.
	• Ensure that the water supply to the humidifier has not been conditioned.
	Conditioned water can increase water conductivity.
Humidifier Water Level Low	• Verify that the humidifier water supply is open and flowing to the humidifier
	water connection.
	• Confirm that the inlet water strainer on the humidifier fill solenoid is clear
	and free of debris.
	• Ensure that the water pressure is at least at 30 psig (206 kPa).
	• Verify the operation of the fill solenoid valve.
Module Powered Up	• The Module has successfully started.
No Backup Systems Available	• Check the number of Systems designated for the backup role.
	• Check that the backup Systems are not failed, in the Comm Lost state, or Off.
Primary Sensors Failed	• Verify that there is a proper CAN connection between sensors and the user
	interface box.
	• Replace the sensor assembly.
Remote Sensor Removed	• Check the CAN bus connection to the remote sensors.
	• Disregard if you removed the remote sensor.

NetworkAIR IR Operation, Maintenance, and Troubleshooting 43