Question 1

Is there an installation video available for the HAYWARD Easy Chem?

Accepted Answer

Unfortunately, no installation video is available for the HAYWARD Easy Chem, but we offer the essential steps extracted from the official technical manual:

Installation of pH and ORP sensors

Remove the protective cap from both probes (pH and ORP)
Insert the probes into the double probe holder (model PSS3, 1/2" thread)
Maintain a maximum angle of 45° from the vertical
Ensure that the probes remain in constant contact with the water

Priming the dosing pumps

Go to the 6b4 - Priming menu
Select pH pump priming to prime the pH pump
Select ORP pump priming to prime the chlorine pump
Wait for the liquid to circulate in the dosing tubes before starting

Initial setup

Press and hold the OK button for 3 seconds to access the main menu
Set the pH to 7.4 (recommended default value)
Set the ORP to 700 mV (recommended default value)
Configure the pH alarms between 6.0 and 8.0
Configure the ORP alarms between 450 and 850 mV

Important: Electrical installation

The electrical connections (220-240V) must be carried out by a qualified electrician. The device must be protected by a 30mA residual current device.

For detailed diagrams and a complete step-by-step manual, refer to the full documentation of this manual.

Question 2

How do I adjust the pH and ORP on my HAYWARD Easy Chem controller?

Accepted Answer

Here’s how to set up your HAYWARD Easy Chem controller to optimize pH and chlorine regulation:

pH Configuration

Press the OK button for 3 seconds to access the Calibration menu
Select “Configuration” then “pH”
Use the up arrow (∧) or down arrow (∨) keys to set the desired value
The allowed range is 6 to 8 pH (recommended default value: 7.4)
Select the dosing mode: Acid or Alkaline as needed

Chlorine Regulation Configuration (ORP)

Access the ORP Configuration menu
Choose the dosing type: Proportional, Timed or On/Off
Set the alarm thresholds according to your target range

Probe Calibration

Before commissioning, perform automatic calibration:

For pH: immerse the probe in the pH 7 buffer solution, then in the pH 4 solution
For ORP: use the provided 465 mV reference solution
Install the probes at an angle not exceeding 45° from vertical

Before First Use

Flush both dosing pumps until liquid flows through the pipes
Regularly clean the probes with a soft brush and mild detergent
Replace the peristaltic tubes annually to ensure optimal performance

Question 3

What does the error code OFA2 mean on my HAYWARD Easy Chem?

Accepted Answer

OFA2 stands for "Over Feed Alarm". On your Hayward Easy Chem pH controller, OFA2 appears when the dosing pump operates at 100% of the set delay without reaching the desired setpoint (pH or ORP). This is a persistent situation and the pump is then automatically locked to prevent excessive dosing.

Difference with OFA1: OFA1 first appears at 70% of the delay (alert), OFA2 at 100% (lock). Unlike OFA1, the OFA2 alarm locks the pump and requires action.

Main causes on the Easy Chem:

The dosing pump is clogged or blocked (lime scale, chemical deposits)
The flow is insufficient due to a priming issue with the peristaltic pump
The configured OFA delay is too short compared to your pool's actual needs
The distribution piping is blocked or crushed
The chemical reservoir is empty or the product is blocked
The level probe indicates a lack of chemical product

To resolve OFA2 on your Hayward Easy Chem:

Press OK for 3 seconds (or the escape key for 5 seconds) to reset the alarm
Check that the chemical reservoir is not empty and that the product flows correctly
Clean the peristaltic pump: open the cover, release the hose, and prime the pump (PRIMING menu: press the arrows to activate the pH or ORP pumps)
Check that the suction and discharge pipes are not blocked or crushed
Check the configured OFA delay in Setup pH or Setup ORP (parameter "OFA ALARM", range 0-60 minutes) - increase it if necessary
Clean the valves and connectors (clean with a soft brush if lime scale is present)
Test again with the priming function (PRIMING in the main menu)

Important: If OFA2 reappears immediately after resetting despite the above checks, or if the pump does not prime correctly, the peristaltic pump or an internal component needs to be replaced. The Santoprene tubes of the pump have a lifespan of 2 years (annual replacement recommended). Consult your installer or Hayward for a more in-depth diagnosis.

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