Referring to the manual (Here's the TET-612 manual ), I went into the controller setup mode (enter 0089, SET), and set the type of thermocouple to K (the type I had), told the controller that I'm HEATING instead of cooling, display the temperature in Fahrenheit, and that I'm using a SSR instead of a relay to control my heating element.

INTY=K (thermocouple), OUTY=2 (SSR output).

If you want to get really fancy, you could calibrate the thermocouple to the degree by messing with the psb setting as well. I left that at zero.



Attaching the thermocouple, I received '68' with power on, indicating 68 degrees. Holding the thermocouple to warm it up yielded DECREASING temperature display -- NOT RIGHT. After removing power, I reversed the thermocouple connections at the terminal strip, turned everything back on, and noted that  holding onto the thermocouple yielded INCREASING temperature -- all was well.

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