NuAire LabGard NU-560-400, Руководство по эксплуатации и техническому обслуживанию

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OM0295
Rev 2 September 2020 Page 71 of 103
8.1 Error Message Troubleshooting Guide
Error Message Indicator Correction
 Window Alarm
(Window High)
Sliding window is above its standard working height
or micro switch is not operating properly.
Verify standard working height and window micro
switch operation.
 Airflow Alarm
 Red Downflow Arrow
(Downflow Low Limit)
Downflow airflow fell below its lower limit alarm
setpoint.
Re-certify cabinet to proper airflow setpoints.

Airflow Alarm

Red Downflow Arrow
(Downflow High Limit)
Downflow airflow went above its high alarm
setpoint.
Re-certify cabinet to proper airflow setpoints.

Airflow Alarm

Red Inflow Arrow
(Inflow Low Limit)
Inflow airflow fell below its lower limit alarm
setpoint.
Check orientation of exhaust sensor shroud.
Re-certify cabinet to proper airflow setpoints.
 Airflow Alarm
 Red Inflow Arrow
(Inflow High Limit)
Inflow Airflow went above its high alarm setpoint.
Check orientation of exhaust sensor shroud.
Re-certify cabinet to proper airflow setpoints.
 Low Pressure Alarm
(Low pressure Limit)
Indicates low pressure or low cabinet airflow Re-certify cabinet to proper airflow setpoints.
Cabinet fluorescent
lights won't turn 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.
Check blower fuse on main control board.
Check voltage coming out of main control board.
Check wiring to blower. Check blower motor. (Note:
blower motor has internal thermal protector. Let
blower motor cool off for a minimum of 30 minutes
to assure thermal protector is not open).
Display indicates
(Remote Override
Active)
Indicates that the remote override is activated,
preventing the usage of the cabinet.
Power Loss Alert! Indicates a power interruption has occurred. Press DISPLAY to clear message.
Cabinet outlets won't
turn on.
Check outlet fuse located on main control board.
Check voltage coming out of main control board.
Cabinet ultraviolet light
won't turn on.
Check sliding window position so that it's fully closed.
Check blower/lights fuse on main control board.
Check voltage coming out of the main control board
to ultraviolet light ballast.
Check light starters, if present. Check ballast.
Blower or light fuse
continues to blow after
replacement.
Check for short on output of fuse.
Isolate output of fuse by disconnecting light circuit,
blower circuit, etc. to isolate short.
Replace UV Light! Indicates that the UV light needs replacement Replace UV light and clear UV run time clock.
Display indicates
(Night Setback Active)
Indicates that the night setback is activated,
preventing the usage of the cabinet.
Certification due in X
weeks.
Indicates the need to schedule the cabinet
certification based on the scheduled timetable
programmed.
Message will clear once the certifier updates the
current certification date.
Active Alarms
DN Sensor Comm!
EX Sensor Comm!
Indicates a digital communications error from the
main control board to the airflow sensors.
Check connectors and wires from main control board
to the airflow sensors. DN indicated downflow
sensor. EX indicates exhaust sensor.
Active Alarms
DN Sensor Error!
EX Sensor Error!
Indicates an error signal generated by the sensor.
Check airflow probe connector on main board. (Ref.
Section 7.11). Replace airflow sensor if required.
Touch Link Display User
Interface
Touch area’s of display do not Align w/ icons Calibrate display in adjust display brightness screen
Run Time Failure Indicates a temporary microprocessor issue
Clean alarm a see it reoccurs, check line voltage to
control board, replace control board