STC-2303 Refrigeration Defrost Digital Thermostat

China STC-2303 Compact Panel Defrost Thermostat - wholesale price, user manual, troubleshooting, wiring diagram, Setting guide video, and alternatives

STC-2303 Refrigerator Defrost Thermostat is a high-low limit digital thermostat with 2 output relays for connecting and controlling the refrigerator and the defrosting unit by preset temperature and time.??

Minimum order Amount: 200 USD

The evaporator defrost controlling function of the STC-2303 digital thermostat is based on the time setting and the stop-defrosting temperature value; it loops the defrosting automatically by time and temperature.

Features of STC-2303 defrost temperature controller:

  • 6 touch-sensitive keys;
  • The power on/off temperature determines the target temperature range, set them directly by shortcut keys;
  • Embed NVM to auto memory exists parameters, resume all data once power back, need not configure it again;
  • Adjustable Temperature Calibration;
  • Control the refrigeration by temperature and the editable compressor protection delay time; the compressor works 15mins and stops 30 mins once sensor error;
  • Control the defrosting by time and temperature, and offers 2 options of time count mode for defrosting cycle, and the artificial forced-defrost available;
  • Supply an editable water dripping time after defrosting;
  • Alarm by error code on display, and the buzzer screams;
  • Control the over-temperature alarm of the freezer room by time and temperature, and offers 2 types of time count mode for the alarm delay time.

Front Panel of STC-2303 defrosts temperature controller

Wiring Diagram of STC-2303 defrosts thermostat.

STC 2303 digital temperature controller wiring diagram
STC 2303 digital temperature controller wiring diagram
Haswill Electronics stc 2303 temperature controller 4 wiring photo
Haswill Electronics STC 2303 temperature controller 4 wiring photo

Function Menu of STC-2303 defrost thermostat

DefrostF1Defrosting Lasting Time112030Min
F2Defrosting Cycle / Interval Time 01206Hour
F3Defrosting Cycle / Interval Time Count mode
0The sum working time of the controller
1The sum working time of the compressor
F4Water dripping Time01203Min
F5Defrosting by010Min
1Hot Gas
F6Defrosting Stop Temperature-405010°C
CompressorF9Delay Time for the compressor Protection0100°C
Alarm F10Alarm Delay time from the controller power on0.124.02.0Hour
F11Alarm Over-Temperature Value0505°C
F12Alarm Delay time after F10
(count time from the moment of the F10 over)
F13Temperature Calibration-10100°C

How to set the temperature for load starts/stops?

  • [On Temp] Key: touch this to check/edit the existing [Temperature value to Turn-on the Load], the character “On Temp” lighting;
  • [Off Temp] Key: touch this to check/edit the existing [Temperature value to Turn-off the Load], the character “Off Temp” lighting.

User Manual of STC-2303 Digital thermostat Download

Please be aware that the English page only displays the English version of the user manual, please switch to the corresponding language page to download the PDF manual in other languages.


FAQ of Haswill Compact Panel Thermostat

  1. How to avoid buying Inferior temperature controllers?
    here is a simple method, that does not require professional knowledge.
  2. How to get the price?
    Click the inquiry button, and finish the form, You will get a reply in a few hours.
  3. Celsius VS Fahrenheit; and Voltage
    All of our digital temperature controllers default in Celsius degrees, and part of them is available in Fahrenheit with different minimum order quantities;
    Besides the 220V AC (±15%), these electronic temperature controllers also are available in 110V AC, 12V DC, and 24V DC (110 / 24 /12 Volts ).
  4. Parameter Comparison
    Catalog of Compact panel digital temperature controllers
  5. Package
    The standard package could load 100 PCS / CTN digital temperature controllers.
  6. Accessories
    We suggest you buy 5% ~ 10% spare parts like clips and sensors as stock.
  7. Warranty
    Default one-year (extendable) quality warranty to all our controllers, We will offer a free-of-charge replacement if found a quality defect.
  8. Customization Service
    If you can not find a suitable temperature controller on this website, We will help you develop it based on our existing mature products ;
    Thanks to China's complete set of related industry chains, our customized thermostats are of high quality and low price;
    the MOQ is usually from 1000 pieces. don't hesitate to contact us for customization services.

or more questions? Click FAQs

Minimum order Amount: 200 USD


Regarding the voltage of this electronic temperature controller

  • 220V AC (±15%) as the default, Without MOQ (minimum order quantity) requirement;
  • 110V AC (±15%) with MOQ 200 PCS;
  • 12V DC with MOQ 200 PCS;
  • 24V DC Without MOQ requirement;

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