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4. What simple test can I use to verify that my Peltier module is operating correctly?


Measuring electrical resistance is a good way to check the health of a Peltier module.

Thermonamic recommends taking an AC resistance measurement using a digital impedance meter or LCR. Using a standard ohmmeter with a DC input signal will not yield accurate readings, because DC voltage applied across the TEC will generate a temperature change and variations in resistance readings. Nominal AC resistance specifications for Thermonamic coolers are available upon request.