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My Sentry controller flashed the TC 2 error message. I tried loading the kiln to see if it could still fire, and the error messages FAIL and TC 2 flashed. Is this a thermocouple issue?

According to the error messages, your thermocouple has burned out. To verify this, unplug the kiln. Remove the four screws from the corners of the controller keypad, and pull the controller from the switch box. Remove the two wires from the bottom of the back of the controller. (They are the thermocouple wires.) Place a thin, bent paperclip where the wires were connected. If the controller reads room temperature, the thermocouple is, indeed, burned out.

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