NuAire LabGard NU-540-300E, Руководство по эксплуатации и обслуживанию

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OM0280 Page 49 of 63
Rev 3 July/2021
8.1 Error Message Troubleshooting Guide
Error Message Error Description Correction

Window Alarm
(Window High)
Sliding window is above standard working height
or micro switch is not operating properly. Verify standard working height and window micro
switch operation.

Window Alarm
(Window Low)
Window Closed
Sliding window is below standard working height
or micro switch is not operating properly.
Indicates the window is in the full down position
Verify standard working height and window micro
switch operation.
Cabinet fluorescent
lights won’t Turn on
Blue LED above light key indicates the lamp should
be on.
Check light fuse on main control board.
Check fluorescent lamps.
Check voltage coming out of main control board to
light ballasts.
Check light starters, if present. Check ballast.
Cabinet blower won't
turn on.
Green LED above blower key indicates the blower
should be on.
Airflow Alarm.
Check blower fuse on main control board.
Check AC voltage coming out of main control board.
Check wiring to blower.
Check blower motor.
Check DC motor PWM signal on main control board.
Red alarm LED blinks Indicates a power interruption has occurred. Press any key to clear.
Cabinet outlets won't
turn on.
Blue LED above outlet key indicates the outlets
should be on.
Check outlet fuse located on main control board.
Check voltage coming out of main control board.
Cabinet ultraviolet
light
won't turn on.
Yellow LED above UV light key indicates the UV
lamp should be on.
Check sliding window position- should be fully
closed.
Check blower/lights fuse on main control board.
Check voltage coming out of the main control board
to ultraviolet light ballast.
Check ballast.
Blower or light fuse
continues to blow
after replacement.
N/A
Check for short on output of fuse.
Isolate output of fuse by disconnecting control
center
connectors, light circuit, AC or DC blower circuit,
etc. to isolate the short.
UV LED blinks fast and
red LED alarm
Indicates that the UV light needs replacement Replace UV light and clear UV run time clock.
Blower green LED
blinks fast and
Presu
rFlow™ 3 green
LED’s indicators on
Indicates that the Nite Care is activated,
preventing the usage of the cabinet.
N/A
PresurFlow™ left red
LED indicator on and
red LED alarm PresurFlow™ reading low flow (pressure)
Check airflow values.
Check blower function.
Recalibrate PresurFlow™ system.
PresurFlow™ right red
LED indicator on and
red LED alarm PresurFlow™ reading high flow (pressure)
Check airflow values.
Recalibrate PresurFlow™ system.
All PresurFlow™ LED’s
blink
Message acknowledges new firmware was
loaded into microprocessor
N/A
Blower red LED blinks
and red LED alarm Indicates that the motor rpm signal has been
interrupted
Check connectors and wires from main control
board
to the motor
Replace motor if required