OM0291
Page 49 of 56
Rev 3 November2020
8.1 Error Message Troubleshooting Guide
Error Message
Error Description
Correction
Cabinet LED lights
won’t Turn on
Blue LED above light key indicates the lamp should
be on.
Check light fuse on main control board.
Check LED 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.
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.
Blower green LED
blinks fast and
PresurFlow™ 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
Содержание LabGard NU-640-400
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