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NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting56
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.
Displayed Alarm Message Action Required