Instruction manual

162
ORP Low Alarm
This error message indicates the ORP reading is below the user-programmed maximum allowable
value.
Possible Causes Corrective Actions
The programmed value is too close to the Go to the ORP Input Page and make sure
ORP set point. that the Low Alarm Limit is at least 50 mV
below the set point.
Chemical supply empty. Replenish chemical supply.
Faulty ORP electrode. Clean and calibrate the ORP electrode as
described in Section 7.4 above. If the
calibration fails, refer to ORP Calibration
Failure troubleshooting above.
Control direction set incorrectly. For oxidizer feed the control direction should
be “force higher”, for reducer “force lower”.
Go to the ORP Output Page and make sure that
the correct control direction is selected.
Faulty metering pump/brominator solenoid Repair or replace the metering pump/solenoid
valve. valve.
Metering pump is siphoning. Repair or install an anti-siphon valve.
Blown fuse. Replace fuse (F2 or F3).
Faulty control device wiring. Correct wiring.
Faulty ORP output relay. Replace the relay board.