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Troubleshooting
Disconnect power to the controller before opening the front panel.
Troubleshooting and repair of malfunctioning controller should only be attempted by qualified personnel using
caution to ensure safety and limit unnecessary further damage. Contact the factory.
CALIBRATION FAILURE
The calibration will fail if the adjustment to the gain is outside a certain range.
Possible cause
Dirty electrode
Improper wiring of sensor to controller
Wrong cell constant entered
Incorrect temperature reading or setting
Incorrect cable length or wire gauge setting
Faulty electrode
ALARM MESSAGES
Alarm messages will include the name of the input or output as defined in the settings menu, the hardware
identifying type and number (S for sensor input, D for digital input, R for relay output, A for analog input) and the
type of alarm.
High or High-High Alarm
Occurs if the conductivity rises above the high conductivity alarm set points. If your unit is programmed for an
alarm relay output, the relay alarm will activate. The controller will continue to check the conductivity, and any
outputs using the conductivity well remain active.
Possible cause
Dirty sensor
Faulty bleed valve
Faulty sensor
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W W W . B A L T I M O R E A I R C O I L . E U
CAUTION
Corrective action
Clean electrode
Correct wiring
Program the controller cell constant setting at the
value that matches the electrode being used
Ensure that the temperature is accurate
Set to the correct values
Replace electrode
Corrective action
Clean sensor (see "Maintenance" on
page 32)
Repair or replace valve
Replace sensor
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