Inaccurate water temp reading

[GCALAHAN]

I assume that the air temp sensor is also hooked up and giving you an accurate air temp reading - <quick and dirty> - switch the wiring to the two sensors and check what they're saying. You can also go over to the unit and see what it's saying 'in the box', just to be sure it's not a problem with the remote unit.

{edit}You can also remove the sensor and check for deposits, cracks etc. - Easy enough with a flat-head screwdriver, but even easier with a 5/16" nut driver (even easier with a 5/16" bit in a cordless drill - but dial down the clutch when retightening it ){edit}

Thanks for the response. Good idea about checking the Aquarite display. The Aquarite unit outside is reading the correct water temp,(matches the thermometer in the pool within 1 degree) which indicates to me the sensor is ok. Is there some sort of calibration procedure between the two units?