American Power Conversion Central Air Conditioning System manual

Operation: Respond to Alarms

Displayed Alarm Message	Action Required
Env Temperature Low	• Verify that no supply air is fed directly back into the return air.
	• Ensure that the alarm delay is not set too low. The delay should be long
	enough to allow the room temperature to stabilize after start-up.
	• Verify that the temperature alarm threshold for the environmental (return or
	remote) sensors is below the cool and reheat setpoints.
	• Verify that the Module is configured and equipped for the reheat mode.
	• Ensure that the reheat mode is enabled (if your Module is equipped with
	reheat).
	• Ensure that the reheat mode is not disabled because of an active user-defined
	input mapped to nonessential lockout.
Fire Detected	• Follow the appropriate facility emergency protocol. NOTE: The purpose of
	the fire sensor is to warn you of possible equipment damage. It is NOT
	intended to provide a fire alarm system to protect the facility and the lives of
	its occupants.
	• Confirm that the wiring connections are secured to the wiring harness.
	• Verify the setting of the fire detector (fire stat).
	• Replace the fire detector (fire stat).
Fluid Coil Actuator Fail	• Verify that the connections between the actuator and the controller board are
	correct and securely tightened.
	• Confirm that the control voltage and signal voltage reach the actuator.
	• Ensure that the proper Module configuration is defined for this Module,
	especially that the coil configuration and the actuator type are correct.
	• Replace the Coil Fluid Actuator.
Group Configuration Invalid	• Check that the # Systems setting (Path: Main > Setup > Group > Group
	Config) agrees with the actual number of Systems connected to the Group.
	Increase this setting to match the number of connected Systems.
Group Configuration Conflict	• Verify the Group configuration settings (Path: Main > Setup > Group) are
	correct. The Group detected one or more Systems in the Group to have
	different Group configuration settings and changed that System’s settings.
Group Fatal Fire Shutdown	• Check the Systems in this Group for fire alarms. The Group Fatal Fire
	Shutdown occurs only when the Group Fire Alarm configuration setting
	(Path: Main > Setup > Group Config > Grp Fire Alrm) is On. While the
	fire alarm is active, the Group will remain shut down.
Group Fatal Smoke Shutdown	• Check the Systems in this Group for smoke alarms. The Group Fatal Smoke
	Shutdown occurs only when the Group Smoke Alarm configuration setting
	(Path: Main > Setup > Group Config > Grp Smoke Alrm) is On. While
	the smoke alarm is active, the Group will remain shut down.
Heater Requires Maintenance	• Verify the operation of the heater and perform preventive maintenance.
	• Reset the maintenance alarm on the display interface for the heater.
Humidifier Current High	• Verify that the proper voltage is applied to the humidifier cylinder.
	• Confirm that the line voltage connections to the cylinder are secure and
	correct.
	• Ensure that the humidifier water supply has not been conditioned.
	Conditioning can increase the water conductivity.
	• Check the humidifier cylinder for mineral buildup that bridges the electrodes.
	• Check the fill and drain valves for leaks.

42 NetworkAIR IR Operation, Maintenance, and Troubleshooting