Thermo-hygro STC-2301 Refrigeration or Heating Digital Thermostat
STC-2301 owns one temperature sensor, six touch-sensitive keys, and one output relay to connect and control the Refrigerator or Heater.
Wiring Diagram
Hold the
key for 3s to see the Menu List
| Code | Function |
| F9 | Delay Time only for Compressor |
| F10 | Room Over-Temp Alarm Delay Time Only for the controller 1st-time power on |
| F11 | Room Over-Temp Alarm Value |
| F12 | Room Over-Temp Alarm Delay Time after F10 |
| F13 | Temp. Calibration = Real – Measured |
| F14 | 0: Refrigeration Mode; 1: Heating Mode |
Set the Temperature
- The aimed temperature range was defined between the “On Temp.” and the “Off Temp.”
- Firstly, you should decide the working mode (F14) is refrigeration or heating; Since the aim temperature range will be rewritten to the default value once you change F14.
- Next, set the temperature for load starts/stops
- [On Temp] Key: touch this to check/edit the existing [Temperature for Load Turn On], the character “On Temp” lighting;
- [Off Temp] Key: touch this to check/edit the existing [Temperature for Load Turn Off], the character “Off Temp” lighting;
Lock/Unlock Keys
If you found the keys were locked, Hold the
key for 1s to unlock, and the icon
on the left bottom of the screen will dim, It will auto-lock again if without operation in the 30s.
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Restore Factory Setting
Hold the
key for 10s, and the screen will show “RES”, now release the
key and hold the
key for 3s; the screen will
- Show “YES” once succeeds;
- Show “ERR” if failed. Please power on again before trying.
This is not a step-by-step user manual; It just shows the key points. The new user should read the Full-Content Version User Manual
Haswill Electronics
STC-2301 Defrost Thermostat Copyright Haswill-Haswell All Rights Reserved





















