Classical Digital Temperature controller thermostat CL309+ for cold room refrigerator

Instrument temperature control function description (heating mode example):

1.Set the instrument temperature control target (SV) to 55°C. After the power is turned on, when the measured temperature is lower than 55°C, the main control output indicator flashes, and it is in the power-on delay for 1 minute. When the delay time expires, the relaypulls in. At the same time, the main control output light is on and the heating body starts to heat up. When the temperature reaches 55°C, the relay turns off, the heating body stops
heating, and the output indicator light goes out. When the measuring temperature is lower than 52°C(bd=3°C), the main control output indicator flashes, this time is at “t” delay.
When the delay time expires, the relay pulls in again, and the main control output indicator is always on The heating body begins to heat up. When the temperature reaches 55°C, the relay is turned off, the heating body stops heating, and the indicator light goes out. Cycle through the work.

2.Manual defrosting: If you press the "defrost" button for about 5 seconds, you can start the defrosting program. (Set AP = n, turn off the alarm function, then set t2 defrosting time can be)