Verify that the speed is set to
4800 from the controller under
“Supervisor Setup”. Check for
LED status error code.
Verify that the card is setup
properly
PCOWeb fails communication
A crossed over cable is required
for direct connection from PC to
controller
Add-on card not installed
properly
Check for proper matting
connectors between the
controller and the add-on card
Check DHCP server for correct
IP. Boot up in factory setting
for default IP: 172.16.0.1 to
assign static IP. See PCOWeb
setup for detail
Wrong Temperature or
Humidity reading or sensor fail
Pop open the sensor module
and verify that the setting on
the temp/hum sensor board is
set to 0-1V
Check for proper 24VDC coming
on +G and GND at the sensor
board
Check for water condensation
on the probe. Dry it out for any
moisture. Relocate the sensors
if necessary.
Wrong offset / Calibration
Check for sensor offset and
recalibrate against a reference
point if necessary.
Alarm source not rectified
Check for the cause of the
alarm. The alarm cannot be
cleared if the cause of the alarm
still persists.
Set all components under
“Manual Ctrl” screen to Auto
mode
Check system setpoint for
cooling temperature.
Compressor only runs when
temperature drops below room
setpoint.
System incorporate a reheat
lockout if cooling and humidifier
are ON