What are some common water heater thermocouple problems? What are some common water heater thermocouple problems?

In maintaining your water heater it is always good to know what can contribute to water heater thermocouple problems.  

Decalibration

Contamination or particle diffusion can alter your thermocouple's physical makeup and prevent it from conforming to required standards.

Poor Solder Joints

Loose solder joints may interfere with proper operation.

Thermal Shunting

Stress or contamination on thin thermocouple wires may cause the thermocouple to alter temperatures they are designed to measure.

Noises

Output signals can be changed by noises because of the thermocouple's narrow gauge wiring.

Green Rot

Lack of oxygen may oxidize chromium used to make thermocouples. This oxidizing corrodes the thermocouple's wires.

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