American Power Conversion FM, DX Displayed Alarm Message, Action Required, Env Temperature Low

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 7 - 10°F below the reheat setpoint.
	• Verify that the Module is configured and equipped for the reheat mode.
	• Ensure that the reheat mode is enabled and working properly.
	• Ensure that the reheat mode is not disabled because of an active user-defined
	input mapped to nonessential lockout.
Exp Module # 1	• Verify the System CAN connections in the user interface box are connected
Communication Lost	correctly and properly terminated.
	• Check the CAN addresses assigned with the DIP switches on the controller
	board on the electrical panel. NOTE: The controller must be restarted to
	recognize an address change.
Exp Module # 2	• Verify the System CAN connections in the user interface box are connected
Communication Lost	correctly and properly terminated.
	• Check the CAN addresses assigned with the DIP switches on the controller
	board on the electrical panel.
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 fire detector (firestat) is set to 125°F.
	• Reset the firestat by pressing the reset button on the firestat.
	• Replace the fire detector (firestat).
Fluid Coil No Coolant Flow	• Verify chilled water supply.
	• Check the operation of the flow switch.
	• Check the electrical connection to the flow switch.
	• Verify that the Economizer automatic coolant isolation valve is open (if
	equipped).
	• Verify that the valve type setting is correct in the System Configuration
	(Path: Main > Setup > System # > System Config > Valve Types).
Fluid Coil Actuator Fail	• Verify the proper connections between the actuator and the controller board.
	• 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 MultiCool/Economizer actuator
	type are correct.
	• Replace the fluid coil actuator.
Fluid Coil Coolant Temp High	• For Economizer Modules, check the operation of the outdoor heat exchanger.
	• For MultiCool Modules, check the chilled water supply temperature.
	• Verify that the fluid coil coolant temperature high threshold is not set below
	the normal temperature of your chilled water supply.
Fluid Coil Coolant Temp Low	• For Economizer Modules, check the operation of the outdoor heat exchanger.
	• For MultiCool Modules, check the chilled water supply temperature.
	• Verify that the low threshold for the fluid coil coolant temperature is not
	set above the normal temperature of your chilled water supply.

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting 55