Manual 2100-620A - Bard D36A2P/BLD.10304 Installation And Service Instructions Manual

TROUBLESHOOTING LC1000-100/LC1500-100 CONTROLLER
AND TEC-EYE ALARMS
The LC1000-100/LC1500-100 controller is designed for continuous and dependable operation. In the event that a
problem is encountered with the A/C system, the system controller may be used to diagnose the cause. The system
controller will display alarms for the entire system; the TEC-EYE hand-held tool will only display alarms for an
individual unit.
The controller signals an alarm condition when the red backlight LED is illuminated behind the alarm key. An alarm
indication is accompanied by a screen text message of the cause. Often the remedy is simple to determine by reading
the alarm message, i.e., "Dirty Filter" (replace filter). The following guidelines are included to assist in troubleshooting
the system due to operational or performance problems. If the problem can't be resolved using the alarm screens and
these guidelines, contact the BARD Technical Service Department at 419.636.0439 for assistance.
TROUBLESHOOTING BARD-LINK
Signal Description
The entire unit(s) stops
Smoke/Fire
working. The alarm
Alarm
resets automatically.
Alarm is reset
automatically. Occurs
when the current
High
indoor temperature is
Temperature
greater than the 2nd
Alarm
high temperature alarm
setpoint value. The
default is 95°F.
Alarm can be reset
automatically. Occurs
when the current
indoor temperature is
Low Temperature less than the indoor
Alarm temperature setpoint
value minus the
temperature alarm
offset. The default is
45°F.
The indoor controller
will activate Emergency
Ventilation mode to
Hydrogen Alarm
exhaust any noxious
(if detector is
gases from building to
connected)
introduce outside fresh
air. The alarm resets
automatically.
CONTROLLER ALARMS
TM
Possible Cause Component to Check
Fire/smoke detector is Check the external
triggered fire/smoke detector
Check if the
connection to the
corresonding input Check if the
is ok or if the PLC connection is ok.
controller board is
defective.
Check for leakages in
The cooling capacity the refrigerant circuit.
loss or heat load loss is Check if heat load
too great. exceeds the design
range.
Check if components
connected to the
compressor are ok.
Compressor circuit
Check if compressor
failure.
is ok. Check if the
electric connection
is ok.
Indoor temperature Check if the sensor is
sensor failure. shorted or has failed.
Incorrect value set for
Check if value is
the high temperature
correct.
alarm.
Check if the heaters
Heating capacity loss. are ok. Check for
leaks around the unit.
Check for a short in
Indoor temperature
the sensor or if it has
sensor failure.
failed.
Incorrect value set for
Check if the value is
the high temperature
correct.
alarm.
Hydrogen detector is Check the external
triggered. hydrogen detectror.
Check if connection
to the corresponding
Check if the
input terminal is ok or
connection is ok.
if the PLC controller is
defective.
Device
Recommended Action
Actions
Replace the external
Indoor Blower:
fire/smoke detector
Off
Compressor/
Reconnect the cable.
Condensor Fan:
If the controller board
Off
is defective, replace
Heat: Off
it.
Damper: Closed
Remove the leakage. Compressor/
Increase the cooling Condensor Fan:
capacity. Off
Replace the defective
components. Replace
the compressor.
Reconnect the cables.
Replace the indoor
temperature sensor.
Correct the value.
If heaters have failed,
replace them. Seal
the leaks.
Replace the indoor
temperature sensor.
Correct the value.
Replace the external
Indoor Blower:
hydrogen detectror.
On
Compressor/
Reconnect the cable.
Condensor Fan:
If the PLC controller
On
board is defective,
Heat: On
replace it.
Damper: On

Manual 2100-620A

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