Troubleshooting and Replacing Defective pH Sensors: A Comprehensive Guide

Client:
Hello
My sensor is reading 7 ph correctly but 4ph isn't reading.
Hi Olivier, do I need to replace it?
Ok need new one same as last time.
Which regulator do you have? Zodiac phperfect.
I think that I want to replace.

One question how much warranty? Purchased the one in the picture last year.

Only 2 months. A little fast. The one from last year you replace as it has cost me over 15l ph what pump in the pool due of broken sensor.
Perhaps you could discount a bit as I think that a sensor needs to work longer then 14 months 😞
Ok not so happy but you have my payment see th item comino to me.

Technical Advisor:
Hello.
It look like a defective sensor.
Try that: https://ph-redox-pool.com/gb/content/16-ma-sonde-ph-est-elle-hors-service-
Please send me a picture of your probe there are more version.
Please send me a picture of the probe , i will give you the reference.
https://ph-redox-pool.com/es/zodiac/71-Sonda-de-pH-para-pH-Perfect.html
1 year. Let me have a look at your order.
Sorry , more than a year...
I will add you ph4 and ph 7 to your order.
The manufacturer give just a 6 months warranty but 82 % works more than 3 years.
OK.