Zodiac eXO iQ 18 User Manual

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H0632500.B- 2019/11 - ES11--

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www.zodiac.com

Instruc ons for installa on and use - English

Salt water chlorinator, pH/Redox regula on

Transla on of the original instruc ons in french

EN

pH Link / Dual Link

eXO®/ eXO® iQ (LS)

GenSalt OT

Table of Contents

Questions and Answers:

R
Ronnie AndersonAug 21, 2025
What to do if Zodiac eXO iQ 18 show 'NO FLOW CHECK PUMP'?
- D
  Debra TaylorAug 21, 2025
  If your Zodiac Water Filtration System displays 'NO FLOW CHECK PUMP', it could be due to a few reasons. The filter pump may have failed, or the filter and/or skimmer(s) might be dirty, or the by-pass valve(s) are closed, or there is a disconnection or failure of the flow switch. Start by checking the pump, filter, skimmer(s), and by-pass valve(s), cleaning them if needed. Also, check the wire connections to the flow switch. If that doesn't resolve the issue, ensure the flow switch is working correctly and replace it if necessary.
B
brian60Aug 23, 2025
What to do if my Zodiac Water Filtration Systems shows 'NO FLOW CHECK PUMP'?
- J
  Jimmy SmithAug 23, 2025
  If your Zodiac Water Filtration System displays 'NO FLOW CHECK PUMP', it indicates a problem with water circulation. This can be due to a filter pump failure, dirty filter or skimmer(s), or closed by-pass valve(s). Inspect the pump, filter, skimmer(s), and by-pass valve(s), cleaning them as needed. Also, check the flow switch wire connections and ensure the flow switch is working correctly; replace it if necessary.
K
Kendra GonzalezAug 25, 2025
Why does my Zodiac eXO iQ 18 show a 'CONDUCTIVITY' error?
- G
  Gerald CollinsAug 26, 2025
  A 'CONDUCTIVITY' error on your Zodiac Water Filtration System can stem from several causes. For models equipped with a temperature sensor, low water conductivity (low salt levels) could be the culprit. If there's no temperature sensor, the error might indicate low water temperature or low salt. Additionally, the cell could be worn, scaled up, or broken. Start by checking the water temperature. Measure the salt concentration in the pool water using a salt tester or a test strip, then add salt to the pool to keep the level at 4 g/L or 2 g/L depending on the model. Check the condition of the cell plates.
R
Ricky RaymondAug 27, 2025
What causes a 'PROD. ERROR' in Zodiac Water Filtration Systems?
- B
  Barbara WoodAug 27, 2025
  A 'PROD. ERROR' on your Zodiac Water Filtration System can be caused by a poor connection of the power supply cord from the cell to the cell or inside the appliance, worn, scaled up, or broken cell plates, or an internal electronic problem in the control box following an external electric incident. First, switch off the appliance and the power supply to the control box, then check the connections for all cables (mains power supply, cell, etc.). If the problem persists, replace the cell. If the issue is still not resolved, check the power supply board by contacting your retailer.
D
Darius OconnorAug 27, 2025
How to fix Zodiac eXO iQ 18 Water Filtration Systems overheating?
- S
  Sherry ThomasAug 27, 2025
  If your Zodiac Water Filtration System is overheating, it's likely because the temperature inside the control box is too high. Chlorination slows above 85°C and stops above 90°C to protect the electric circuits. If the box is installed outdoors, protect it from direct sunlight. Chlorination resumes automatically once the temperature has fallen back down. If the issue persists, it may indicate a problem with the appliance.
M
morganjoshuaAug 29, 2025
What to do if Zodiac eXO iQ 18 Water Filtration Systems displays 'pH LOW'?
- K
  Kent SchroederAug 29, 2025
  If your Zodiac Water Filtration System displays 'pH LOW', it indicates that the pH is less than 5, or there is a faulty connection or calibration error, pH sensor failure or dirty, or low alkalinity, reduced pH. Check the pH sensor wiring on the control box and on the sensor holder. Check the operation of the sensor using a sensor tester (contact your retailer). Check and adjust the alkalinity.
M
Marisa KnightAug 31, 2025
Why does Zodiac eXO iQ 18 Water Filtration Systems stop due to 'LOW WATER TEMP.'?
- C
  Catherine GeorgeAug 31, 2025
  Your Zodiac Water Filtration System stops due to 'LOW WATER TEMP.' because the water temperature measured by the appliance's temperature sensor is less than or equal to 10°C; production stops in order to protect the cell. Chlorination will automatically resume at the Low mode chlorination rate between 10 and 15°C and at the normal chlorination rate when the temperature exceeds 15°C.
K
Katherine GaySep 1, 2025
Why is there no chlorine production visible on my Zodiac eXO iQ 18 Water Filtration Systems?
- J
  Jeremiah BarberSep 1, 2025
  If you observe no visible chlorine production on the cell plates of your Zodiac Water Filtration System, it could be because chlorination is in the reversal period, or chlorination is set to less than 100% and is stopped. Wait and see. Chlorination should resume within the next 10 minutes.
P
Pamela DavisSep 3, 2025
What causes data loss in Zodiac eXO iQ 18?
- Q
  qanthonySep 3, 2025
  Data loss (time, etc.) in your Zodiac Water Filtration System can be attributed to a dead battery or a power cut. If it's due to a dead battery, contact your retailer to replace the 3V CR1220 battery. If due to a power cut, wait for the power to be restored. The appliance should automatically recover the information saved before the power cut.
J
Juan MooreSep 4, 2025
Why does my Zodiac Water Filtration Systems show a conductivity error?
- T
  tkimSep 4, 2025
  A conductivity error in your Zodiac Water Filtration System could be due to several reasons. If your model has a temperature sensor, low water conductivity (low salt) might be the cause, so check the water temperature. It can also be caused by low salt levels due to water loss or dilution from filter backwash, water renewal, rain, or leaks. Measure the salt concentration using a salt tester or test strip, and add salt to maintain the level at 4 g/L or 2 g/L, depending on your model. Also, check the condition of the cell plates.

Zodiac eXO iQ 18 Specifications

General

Brand	Zodiac
Model	eXO iQ 18
Category	Water Filtration Systems
Language	English

Summary

eXO®/eXO® iQ (LS) GenSalt OT Installation and Use Manual

General Warnings

Safety instructions to prevent damage or injury.

Electrical Appliance Warnings

Safety precautions for electrical components and usage.

Installing the Salt Water Chlorinator

Installing the Cell

Procedure for installing the electrolytic cell.

Installing the Control Box

Electrical Connections

Steps and guidelines for electrical connections.

Identifying Functions to Connect

Preparing the Pool

Balancing the Water

Guidelines for adjusting water parameters (pH, TA, TH).

Adding Salt

Procedure for adding salt to the pool water.

Using the Appliance

Configuration Before First Use

Programming Filtration and Chlorination Times

Calibrating Sensors

Guide to calibrating pH and ORP sensors.

Configuring pH and ORP Setpoints

Routine Use Modes

Troubleshooting Common Issues

Appliance Behaviour Messages

Explains appliance messages and potential causes.

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