very strange results with the ORP , and PH sensors

[Yanir38]

Hello everyone!
I connected my new P4 few days ago .
I did step by step about the installation , including calibration of each probe.
yesterday I also did firmware update for GHL control center ,to the latest version (7.28 version).
since day 1 until today the ORP is at 98 mv, PH is at 8.49 and don't change even at night.
My tank is new tank ,and I started it 7 days ago .
I'm in the hobby for the last 14 years and never had issues with equipment. any advice what should I do ?13234

[Gandalf]

you have to do a new calibration after the firmeware update.

[Yanir38]

I did new calibration after the firmware update ...turn on the skimmer , and the results are the same.....ORP at 99 mv

[Gael]

you have to do a new calibration after the firmeware update.

Hi,

No, you have to backup settings and sensors data before the update and restore theses 2 files after.

Gaël

[Yanir38]

I did it .
I don't understand what is the problem.
I been for 15 years at this hobby and handled all kind
of equipment.
that errors I haven't seen yet

[Gandalf]

Please test your Qater otside your Tank in a cup

[Yanir38]

Please test your Qater otside your Tank in a cup

I did it....in 1 hour it got up to 112 mv....what is the problem ?

[Gandalf]

du scheinst ein Gerät am Becken zu haben, dass nicht perfekt isoliert ist.
Um es zu finden kannst du nach und nach alle Geräte abklemmen und den Verursacher suchen + ggfs. tauschen.
Oder du erdest einfach dein Wasser. Das hilft häufig auch schon. Einfach einen kleinen Draht aus dem Becken an eine blanke Stelle der Heizung legen.

[Yanir38]

Thanks for the reply...I did test for stray current, here is the result.....0.0 volts at the water. I also connected ground probe , directly from the sump to the plug at the wall .