Up and running after lightning destroyed my pentair automation system. Intellichem and easy touch boards are new as is my vf drive.
ph measured 7.8
Noticed the value from my PH probe was always reading about one entire unit lower than the intellichem reading. Measured 7.8 by strip and taylor test kit, but intellichem reads 6.8 with a .3 up tweak
Pentair tech just came out and replaced the PH probe yesterday , but the readings are identical. from the screen logic graph It almost looks like it is reading backwards-- yet the connections are correct. ph feed indicates 94 % activity, but the level is set to 7.5 and it is not dispensing muriatic acid.
F/C has been rock stable at an orp setting of 650.
While I have heard concerns about the intellichem usualy the concern is ORP and ph is ok. I would appreciate it if anyone has any suggestions as to why the ph reading and measured are so different.