Zodiac eXO iQ 18 User Manual

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H0632500.B- 2019/11 - ES11--

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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:

G
Gary WoodsSep 6, 2025
How to fix 'PROD. ERROR' on Zodiac Water Filtration Systems?
- J
  Justin VaughanSep 6, 2025
  If your Zodiac Water Filtration System displays 'PROD. ERROR', it could stem from a few issues. First, check the power supply cord connections from the cell, both to the cell and inside the appliance, ensuring they are secure after switching off the appliance and the power supply to the control box. Another cause might be worn, scaled up, or broken cell plates, which would require cell replacement. It may also indicate an internal electronic problem in the control box, in which case you should check the power supply board.
D
daguilarSep 7, 2025
What should I do if pH dosing STOP on my Zodiac Water Filtration Systems?
- J
  Jeffrey RamseySep 8, 2025
  If the pH dosing stops on your Zodiac Water Filtration System, it means that the pH value measured remains higher than the pH setpoint. To solve this problem you should check or replace the container, check and adjust the alkalinity (TA) of the pool water, and check/clean or replace the pH sensor.
J
Jodi PayneSep 9, 2025
What causes 'ORP PROD. STOP' in Zodiac Water Filtration Systems and how to resolve it?
- D
  Dennis SmithSep 9, 2025
  The 'ORP PROD. STOP' error in your Zodiac Water Filtration System indicates that the ORP setpoint hasn't been reached after prolonged chlorination. You should check the pool's chlorine level using a photometer or test strip, and inspect the ORP sensor wiring on both the control box and sensor holder. High cyanuric acid levels can also interfere with chlorine's effectiveness and ORP readings, so empty the pool using the bottom drain to reduce cyanuric acid concentration and perform shock chlorination with calcium hypochlorite to reduce chloramines. Also, check the condition of the cells and consider replacing the ORP sensor.
A
Amy AyersSep 12, 2025
Why does my Zodiac Water Filtration Systems show 'pH REGUL. STOP'?
- J
  Justin DodsonSep 12, 2025
  The 'pH REGUL. STOP' error on your Zodiac Water Filtration System means the pH setpoint hasn't been reached after 5 hours of injection. Start by checking the pool's pH with a photometer or test strip and inspect the pH sensor wiring on the control box and sensor holder. Ensure the pH minus container isn't empty and test the peristaltic pump. If the alkalinity is high, this can prevent pH reduction; consider reducing the alkalinity level. Replacing the pH sensor may also be necessary.
S
Stephanie BurnsSep 12, 2025
What to do if my Zodiac Water Filtration Systems is overheating?
- G
  gperkinsSep 12, 2025
  If your Zodiac Water Filtration System is overheating, it means the temperature inside the control box is too high. To prevent this, protect the box from direct sunlight if it's installed outdoors. The chlorination process slows above 85°C and stops above 90°C to protect the electric circuits. Chlorination will resume automatically once the temperature decreases.

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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