Elecro Engineering Titan Optima Series Installation & Operating Manual page 13

Probe Calibration Setup
After selecting 'EXIT' for the timer setup the display will then show 'PROBE CAL' touch the 'O.K' button
key to select, touch the 'UP' / 'DOWN' button keys to increase or decrease the temperature calibration
adjustment, touch the 'O.K' button key to select, the display will then revert back to show 'PROBE CAL'.
Probe calibration is usually not required. However, should you need to make an adjustment take a
temperature reading from the pool water with an accurate thermometer then adjust as required.
Actual Water Temp
28
28
Heater Reading
30
26
Adjustment Required
-2.0
2.0
13