Relay Output: Acts as a dry-contact switch to trigger an external contactor.

What (e.g., kiln, oven, smoker) are you trying to control?

: This indicates the input signal has exceeded the high range. Check for a broken sensor or incorrect wiring.

The sensor is disconnected, broken, or incorrectly wired. Check thermocouple polarity.

Fourtech Temperature Controller Manual [2021]

Relay Output: Acts as a dry-contact switch to trigger an external contactor.

What (e.g., kiln, oven, smoker) are you trying to control? fourtech temperature controller manual

: This indicates the input signal has exceeded the high range. Check for a broken sensor or incorrect wiring. Relay Output: Acts as a dry-contact switch to

The sensor is disconnected, broken, or incorrectly wired. Check thermocouple polarity. or incorrectly wired. Check thermocouple polarity.


Sign up to our newsletter