Range Alarm
It indicates that the conductivity signal from the sensor is out of the normal range of 0-30,000. This error
condition will stop conductivity control. This prevents controlling based upon a false conductivity reading. If the
temperature goes into range alarm (outside -5 to 90 °C for tower, -5 to 220 °C for boiler), then the controller will
go into manual temperature compensation using the default temperature setting.
Possible cause
Corrective action
Sensor wires shorted
Disconnect short
Faulty sensor
Replace sensor
Faulty controller
Replace or repair controller
Sensor fault
This error indicates that the signal from the sensor is no longer valid at all. This error condition will stop
conductivity control.
Possible cause
Corrective action
Sensor wires shorted
Disconnect short
Faulty sensor
Replace sensor
Faulty controller
Replace or repair controller
Input failure
This alarm indicates that the sensor input circuit is no longer working. This error condition will stop conductivity
control.
Possible cause
Corrective action
Faulty controller
Replace of repair controller
W W W . B A L T I M O R E A I R C O I L . E U
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