American Power Conversion DX, FM manual Displayed Alarm Message, Action Required, System Options

Displayed Alarm Message	Action Required
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.
	Adjust 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 that one or more Systems in the Group have
	different Group configuration settings and changed the settings of that
	System.
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.
Head Pressure High	• Confirm that the air-cooled condenser is operating properly and that the
	setpoints are correct.
	• For water/glycol configuration, confirm that the condenser loop pumps are
	operating properly.
	• Ensure that the air-cooled condenser is free from debris on the air intake side.
	• Verify that all isolation valves to the condenser loop or interconnecting
	piping are open.
	• For water/glycol cooled configuration, confirm that all air has been purged
	from the condenser loop.
	• For water/glycol cooled configuration, confirm that the glycol-to-water
	concentration is 40% glycol to 60% water.
	• Verify (water/glycol) cooled configuration, confirm the indoor Module and
	outside heat exchanger that interconnects between the wiring.
	• Verify (water/glycol) correct operation of the condenser fluid valve actuator.
	• Confirm proper refrigerant charge in the Module.
	• Ensure that the Module is set to the proper heat of rejection method on the
	display interface (Path: Main Menu > Setup > System # > System Config
	> System Options).
	• Verify (water/glycol) cooled configuration, that the strainers are clear and
	open.
	• Confirm the proper operation and trip point of the high head pressure switch.
	• Evaluate field piping for proper line sizes and proper installation.
	• Verify that the Economizer isolator valve is open (if installed).
Heater Requires Maintenance	• Verify the operation of the heater and perform preventive maintenance.
	• Reset the maintenance alarm for the heater at the display interface.
Humidifier Current High	• Verify that the proper voltage is being applied to the humidifier cylinder.
	• Confirm that there are secure and proper line voltage connections to the
	humidifier cylinder.
	• Ensure that the humidifier water supply has not been conditioned.
	Conditioning can increase the water conductivity.
	• Check the electrodes in the humidifier cylinder for mineral buildup that
	bridges the electrodes.
	• Check the fill valve for debris which may prevent the valve from closing.

56 NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting