Possible cause
Corrective action
Improper wiring of valve or controller
Correct wiring
Conductivity rose over alarm limit while biocide lockout
occured
Allow normal bleed to occur
Clogged bleed line
Clean
Faulty bleed relay
Replace
Low or Low-Low Alarm
Occurs if the conductivity drops below the low 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
Corrective action
Sensor disconnected
Reconnect. Check cable for continuity.
Sensor dry
Check tee for obstruction. Verify flow.
Change location of electrode.
Pre-bleed set too low
Check pre-bleed setting
Bleed valve stuck open
Repair or replace bleed valve
Faulty electrode
Replace sensor
Improper wiring of electrode
Correct wiring
Faulty bleed relay
Replace relay
Output Timeout
This error condition will stop control. It is caused by the output (either relay of analog) being activated for longer
than the programmed time limit.
Possible cause
Corrective action
Programmed value too low for normal
conditions
Increase time limit
Bleed flow rate too low
Check for clogged strainer. Check for insufficient pressure
differential.
Bleed valve not opening
Check for faulty bleed valve. Check bleed valve wiring. Check
controller relay.
Sensor not responding
Clean sensor, check wiring, replace sensor.
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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6 Operating Conditions
6 Operating Conditions
