Alarm Description; Alarm Reset - EngA CenCon Technical Manual

CenCon

ALARM DESCRIPTION

The last alarm event will be shown on the main page of the CenCon display. A more detailed list can be found
by pressing the alarm keypad button
module type.
Low limit
Air Proving Fault
Shorted Air Proving
Low airflow
Discharge Air Sensor Failure
Ambient Air Sensor Failure
Damper End Switch Warning
Damper Mechanical Alarm
Communication Error

ALARM RESET

To reset from the computer screen, press the Alarm Reset button on the main screen. To reset from the
CenCon keypad, press the
. Additional alarms specific to the system are detailed by expansion
The low limit setpoint is the lower of 40°F or 15°F below the discharge air
setpoint.
VFD Feedback is greater than the minimum VFD speed for more than 30
seconds with the supply fan output off.
Air Proving switch shorted on startup.
Air Proving switch opens during operation for 30 seconds or the VFD
feedback drops below the minimum speed for 30 seconds.
Discharge Air sensor is outside of its range (-60°F to 220°F) for 10 seconds
or more.
Outdoor Ambient sensor is outside of range (-60°F to 220°F) for 10
seconds or more.
Shorted damper end switch. Meaning the damper end switch is made
before energizing the damper output.
End switch enabled codex is true and end switch is not made after
energizing damper output.
Triggered on loss of communication with application modules.
button, then to move the cursor to the reset area. Then press
20
.