How to calibrate Autopilot

[Poolsean]

Correction, the salt calibration is in the Maintenance menu.
Press MENU, then arrow up or down to CALIBRATE SALT.
Press SELECT, then arrow up or down to match your salt test.
Press SELECT, the unit will adjust to the new reading.
EXIT MENU to go back to the regular display.

It is important that you have the water tested at least 24 hrs of pump operation after adding salt so that it is circulated and distributed evenly throughout the pool. Only if this salt test shows differently from the unit do I recommend going into the Salt Calibration menu. A +- 200 - 300 ppm difference is not uncommon and does not warranty calibration, although it doesn't harm it to adjust it.

[JerryZ]

Also make sure your salt sensor has not gotten calcium on it. They need to be replaced periodically. The plates reverse to stop buildup, but unless you swish some acid/water solution in the "U", nothing ever cleans the salt/temp sensor.

And those salt/temp sensors are dang near impossible to take out.