We need to start a fan when the temperature rises and stop it when the temperature drops.

Set cooling control (direct operation).

Change the direct/reverse operation setting to direct operation.

For example, if you set the temperature (e.g., to 30 °C), the control output will turn ON when the temperature is above the set temperature and will turn OFF when it's below the set temperature.

If the temperature rises above the set temperature again, the output will turn ON again.
The point at which the output turns ON is also affected by the hysteresis setting.

Applicable Models: All Omron's Temperature Controllers