NuAire LabGard D NU-543-400, Manual

Page: 24 / 70

OM0283 Page 24 of 70
Rev 2 July/2021
6.1.6 Nite Care Mode
The NU-543 may be configured to allow the DC ECM motor to continue to run at a lower rate with the sliding
window closed allowing the workzone interior to be continually HEPA filtered. If the Nite Care mode is configured,
the blower must be on (green LED above blower key will blink) and the window closed for it to be activated. In
addition, the fluorescent light will be disabled. The UV light may be turned on if installed.
6.1.7
Standby/Run Mode Alarms
If present, standby/run mode alarms will be both visual and audible, the red alarm LED oval will turn on, and the
message area on the display will indicate the alarm description. Audible alarms will produce an alarm tone for 30
seconds, then ring back for 2 seconds of every 5 seconds. Pressing the alarm silence key will silence the audible
alarm for 15 minutes initially then will start the ring back function again
.
The bottom of the display or message area will indicate alarms, errors or other notable conditions. Since the
message area is limited to one line of text, only the highest priority message will be indicated. The list below
represents the highest to lowest priority.
1) New Firmware Loaded
2) Internal Board Failure
3) Power on Reset
4) Velocity Sensor Error
5) Velocity Comm Failure
6) Velocity Alarm
7) Blower Inhibited
8) Blower RPM Failure
9) Nite Care On
10) Window Closed
11) Window High
12) Window Low
13) Replace UV Light
Note: The above messages are described in greater detail in section 8.
Airflow Idle XX:XX
Nite Care On
