W3230 Digital Temperature Controller Waterproof Tools Thermostat LED Display Heating Cooling High Accuracy Instrument 12/24/220V Description: Mini temperature controller. With clear LED display for better readability. Wide temperature measuring range. Heating or cooling control. All parameters setting can be saved after short circuit. Relay output. High Control precision 0.1 centigrade Can be used for domestic freezer, water tanks, refrigerator, industrial chiller, steamer, industrial equipment and other temperature-controlled system. Specifications: Power Supply:12V DC/24V DC/110V-220V AC Temperature Control Range:-55-120 Resolution Ratio: 0.1C(-9.9-99.9); 1C(other range) Color of Displaying: red/blue Measurement accuracy: 0.1C Control accuracy: 0.1C Sensor: NTC10K Waterproof sensor Output: Relay Contact Capacity 10A 220V / 20A 12V / 20A 24V Environmental requirements: -10-60C , humidity 20%-85%RH Dimension:79mm *43mm*26mm Cutting Size:73mm*39mm Sensor wire: 1 meter Code table: Code Function Set Range Default P0 Heating/Cooling H/C C P1 Return Difference 0.1-30 2 P2 Setting limits to the manimum 120 120 P3 Setting limits to the minimum -55 -55 P4 Temp. Correction -20 0 P5 Delay Start 0-10min 0 P6 Alarm Temp -175 OFF P7 Data locked ON/OFF OFF P8 Restore factory setting ON/OFF OFF Wiring Diagram: 12V DC: 24V DC: 110V-220V AC: Package Include: 1 x W3230 Digital Temperature Controller Instructions: Connect the power supply and equipment to supply power to the controller. At this time, it is displayed as measuring temperature. Pre SET once, the display temperature will flash, pre +- to set the desired temperature (pre +- to quickly raise and lower) After finishing, pre SET to confirm the return. At this time, the controller automatically performs relay on/off according to the setting! The output of the thermostat is a 20A relay, which satisfies various high-power loads. When the control circuit is connected, the thermostat can be powered. At this time, the display shows the ambient temperature. Indicator light, digital tube status description Indicator light: Blinking indicates cooling or heating start delay, always on indicates that the relay is closed Digital tube: Display LL is the sensor open circuit, please follow the instructions to connect the sensor; display HH is out of the measurement range, the thermostat will forcibly open the relay; display --- for high temperature alarm Parameter function description Pre and hold SET for 5 seconds to enter the main menu settings, pre +- to switch P0...P6, long pre SET or 10 seconds without button action, the controller automatically confirms the return. P0 cooling and heating mode Pre and hold SET for 5 seconds to display P0, pre SET once to set the working mode, pre +- to switch [H is heating mode] [C is cooling mode] Pre SET once to return, long pre SET or 10 seconds without button action controller automatically confirm carry out. In the cooling mode: when the temperature measurement value the temperature set point, the refrigeration relay is closed and the refrigerator is started; when the temperature measurement value temperature set point - the return difference, the refrigeration relay is turned off and the refrigerator is turned off. In the heating mode: when the temperature measurement value temperature set point, the heating relay pulls in and the heater starts; when the temperature measurement value temperature set point + hysteresis, the heating relay is turned off and the heater is turned off. P1 hysteresis setting Pre and hold SET for 5 seconds to display P0, pre +- to switch to P1, pre SET once to return the difference, pre +- to set the difference to 0.1-15, pre SET once after completion, long pre SET or 10 seconds without button The motion controller automatically confirms the completion. In the cooling mode: when the temperature measurement value the set value, the relay is closed, the refrigerator starts; when the temperature measurement value the set value - the difference value, the relay is turned off and the refrigerator is turned off. For example, if the environment is 30 C, the set value is 25 C, and the hysteresis is set to 2 C. After the power is turned on, the relay closes the refrigerator to start. When the cooling reaches 23 C, the relay turns off the refrigerator and the refrigerator is turned off. The open temperature starts to rise. When it rises to the set value of 25 C, the relay closes the refrigerator again, so the repeated cycle control temperature is not higher than 25 C. In the heating mode: when the temperature measurement value the set value, the relay pulls in and the heater starts; when the temperature measurement value the set value + the difference value, the relay is turned off and the heater is turned off