Problem solving and replacement of the PH Clever Zodiac 19644240 probe.

Client :
On August 2nd, I bought a pH probe for Clever Zodiac 19644240.
I couldn't install it until this week and it doesn't work.
I submerged it in the pH 7 probe tester and it gives an error.

Technical Advisor :
Good morning,
What you're describing to me is a bit strange. Usually, faulty probes show at least one value.
Do this small test:
https://ph-redox-pool.com/gb/content/16-ma-sonde-ph-est-elle-hors-service-
We will replace the probe if necessary.

Olivier Michaud
Phone: +420 602 429 381
Email: ph-redox-pool@ph-redox-pool.com
Website: ph-redox-pool.com

Client :
Hello, good afternoon Olivier:
I have done the tests you indicated and the probe still gives an error.
You tell me what else I have to do.

Technical Advisor :
We will send you a new probe.

Client :
Do you want me to return it, in case you want to study it?

Technical Advisor :
This will be sent on Monday.
No, it's not worth it.

Client :
OK. Thank you.

Technical Advisor :
Good afternoon