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Apr 11, 2012 12:38 PM

Calibrate instant read thermometer - CDN

I bought the CDN DTQ450X, which was one of Cook's Illustrated top thermometers.

It says you can calibrate it by putting it in ice water, holding the cal button. I always get "ERR" on the display. It says it will do that if the water isn't between 30-34.

I have the water very very icy and have let it sit in there and the lowest it will read is 34.8. I am holding it so the tip doesn't hit the bottom, otherwise it is warmer.

It seems like this therm is off and I can't calibrate it.

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