Because these controllers often switch high voltages, manuals emphasize correct wiring
Press and hold the (or Function) key for 5 seconds to enter the internal menu. fourtech temperature controller manual free
The you're setting up (e.g., kiln control, boiler). How to Choose a Fourtech Temperature Controller fourtech temperature controller manual free
: Features PID with auto-tuning, proportional ON/OFF, and heating/cooling modes. Power Supply : Standard 85–242V AC or 230V AC +/- 10%. Output Types : Relay (5A/10A) and SSR (12V DC) options. Core Programming and Key Operations fourtech temperature controller manual free
Autotuning (AT) procedure. Solution: Your PID values are wrong. The manual details how to initiate Auto-tune . Usually: Hold SET + ▼ for 3 seconds. The “AT” light will blink. Let the unit run through three heating cycles.
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