Zodiac TRi PRO - TRI PRO Module Maintenance and Winterizing; Error Codes and Warnings; PH LOW Error

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This pipe can be simply cleaned by using the peristaltic pump Testing and Priming function (see chapter
3.8 / ‘Testing / Priming the peristaltic pump’).
- Remove the pH & ACL sensors from their respective holders. Store sensors in their original bottle or in
a bottle of water filled with tap water. Seal sensor holders if necessary.
VERY IMPORTANT
: NEVER let sensors dry out, this would damage it permanently.
10/ Error codes and warnings
10.1/ ‘PH LOW’
 Meaning :
Pool water pH is 0,4 pH lower than the set point displayed on the LCD screen. pH value should be
manually checked before proceeding.
 Possible causes :
pH sensor needs to be cleaned and calibrated.
pH sensor is worn out and/or faulty.
This could also mean that the selected set point is too high or that the selected pool size is too high.
 Solutions :
- Clean then calibrate the pH sensor (see chapter 8 / ‘pH & ACL sensors cleaning’ and 4.1 / ‘pH sensor
calibrating procedure’).
- Replace the pH 7,5 buffer solution, then calibrate the pH sensor.
- Check the selected value for pH set point.
- Check the pool size setting (see chapter 4.3 / ‘Setting the pool size’).
- If necessary, replace the pH sensor.
10.2/ ‘PH HIGH’
 Meaning :
Pool water pH is 0,4 pH higher than the set point displayed on the LCD screen. pH value should be
manually checked before proceeding.
 Possible causes :
pH sensor needs to be cleaned and calibrated.
pH sensor is worn out and/or faulty.
This could also mean that the selected set point is too low or that the selected pool size is too low.
 Solutions :
- Clean then calibrate the pH sensor (see chapter 8 / ‘pH & ACL sensors cleaning’ and 4.1 / ‘pH sensor
calibrating procedure’).
- Replace the pH 7,5 buffer solution, then calibrate the pH sensor.
- Check the selected value for pH set point.
- Check the pool size setting (see chapter 4.3 / ‘Setting the pool size’).
- If necessary, replace the pH sensor.
10.3/ ‘PH ERROR’
 Meaning :
- The peristaltic pump of the TRi PRO module has operated for full dosage cycles without achieving the
defined set point (displayed on the LCD screen).
- The peristaltic pump of the TRi PRO module has not operated since more than 72 hours.