9 Troubleshooting and fault elimination
40
Nature of the fault
Possible cause
Remedial action
The titanium cell crusts over
within one month
Very hard water and increased pH value and total
hardness.
Adjust the pH and total hardness.
Chlorine production cell does not clean itself, no polarity
reversal.
Check whether automatic polarity reversal is functioning (default setting:
change pol 1 to pol 2 every 300 min).
Polarity reversal too long for hardness of the water.
Accelerate polarity reversal (automatic self-cleaning function).
ATTENTION: If you accelerate the polarity change (to 200 minutes or
less), the life of the cell will be reduced and the warranty on the cell will
be lost.
Have this setting performed by a specialist service technician/installation
engineer.
pH measurement
pH control measurement and
device display differ
Calibration is faulty or has not been performed for an
excessively long time.
Recalibrate the system.
Calibration error during
pH calibration
Faulty input of calibration values.
Repeat the calibration.
Electrode is dirty or faulty.
Clean electrode in electrode cleaner and rinse in distilled water. If it is
not possible to calibrate the electrode after this treatment, it must be
replaced.
Humidity in the cable combination.
Dry or replace the cable combination.
Measuring amplifier is faulty.
Device must be repaired or replaced.
pH control / pH dosing
pH alarm (AL3)
The pH control was not able to
achieve the pH setpoint in the
pool within the programmed
maximum dosing time.
pH dosing pump not switched on (switch set to 0).
Switch pH dosing pump on (set switch to 1)
pH Minus/pH Plus canister empty.
Put full canister of pH Minus/pH Plus in place. In order to quickly fill
the empty dosing hose, the pump can be set to switch position 2.
Make sure you reset the switch to 1 as soon as the hose is filled
again.
Leak in the dosing line.
Repair the dosing line. Caution! Leaking pH Minus/pH Plus can cause
chemical burns. Wear gloves and safety goggles.
Dosing rate of the pH dosing pump is too low.
Increase the dosing rate by opening the red regulator of the dosing
pump wider. To do this, set the pump switch to 0 and secure the
pump against being switched on. Remove the transparent cover from
the pump and adjust the red regulator using a slotted screwdriver. Do
not switch the pump back to operating status (switch position 1) until
you have refitted the cover.
Reset AL3 with
after remedying the fault.
Dosing pump is not working
although the measurement
value on the device indicates
that dosing should be triggered
Dosing relay is faulty.
In the menu Relay configuration, assign the function pH to another
relay. If necessary, the device must be repaired or replaced.
Dosing pump is faulty.
Check dosing pump and replace if necessary.
Dosing pump is working but
there is no pH correction
pH Minus/pH Plus canister empty.
Put full canister of pH Minus/pH Plus in place. In order to quickly fill
the empty dosing hose, the pump can be set to switch position 2.
Dosing system leaky, pH Minus/pH Plus is leaking.
Check the entire dosing line and repair any leaks.
Redox measurement
Redox potential does not match
the control measurement
Calibration is faulty or has not been performed for an
excessively long time.
Recalibrate the system.
Calibration error during redox
calibration
Faulty input of calibration values.
Repeat the calibration.
Electrode is dirty or faulty.
Clean electrode in electrode cleaner and rinse in distilled water. If it is
not possible to calibrate the electrode after this treatment, it must be
replaced.
Humidity in the cable combination.
Dry or replace the cable combination.
Measuring amplifier is faulty.
Device must be repaired or replaced.
Temperature measurement
Temperature display is faulty
Calibration is faulty or has not been performed for an
excessively long time.
Recalibrate the system.
Temperature sensor is faulty.
Replace the temperature sensor.
Humidity in the cable combination.
Dry or replace the cable combination.
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