Features of Function
Mini-sized and integrated intelligent control and applicable to the compressor of one HP.(Include 1HP)
Temperature Display/ Temperature Control/ Energy saving control/Manual, automatic defrost/Evap. Fan
control/ Light Control /Time to end defrost/ Value Storing/ Self Testing
Specifications
1. Power supply:220V ~240VAC 50/60Hz
2. Temperature sensor: NTC (B=3380,10k=25 ) ,
3. Range of temperature displayed : 45 99 ( 45 210 ) Accuracy: 1(2)
4. Range of set temperature: E1~E2 Factory default : 00 (32 )
5. Dimension:77(Length) 35(Width) 32(Depth)mm
Mounting hole dimension:71(Length) 29(Width)mm
Relay box dimension:106(Length) 96(Width) 46(Depth)mm
6. Temperature of the operating environment: 10 60 (14 140 )
Relative Humidity:20%~90%(Non-condensing)
7. Relay contact capacity:
Compressor: N. O. 30A/250VAC
(Can connect 1HP compressor, if more it needs to connect an AC contactor)
Evap. fan: N. O. 10A/250VAC Light: N. O. 10A/250VAC
Model: SF-103ST Digital Temperature Controller
Front Panel Operation
1. Set temperature (compressor stop temperature) adjustment
Press button, the set temperature is displayed.
Press or button to modify and store the displayed value. Press button to exit the adjustment
and display the cold-room temperature.
If no more button is pressed within 6 seconds, the cold-room temperature will be displayed.
(Set temperature adjustment range: E1 E2)
2. Manual start/stop defrost: Press button and hold for 6 seconds to defrost or stop defrost.
3. Clock adjustment: Press and for once to enter clock adjustment state, t + hour flash display, press
and to adjust the hour, press again for once, t + minutes flash display, press and to adjust minutes.
It will exit, if no more button is pressed within 6 seconds.
4.
5. Defrost LED: during defrosting, the LED is on; during dripping time the LED flashes.
6. Evap. Fan LED: during fan operation, the LED is on. When the fan stops operation, the LED is off.
7. Light control: press for once can turn on or turn off the light, when power on, it can still memorize.
8. Parameters setup
9. Factory default resumption: press and button simultaneously for 6 seconds, "888 " will be displayed.
At that moment all the parameters and set temperature will resume to factory default, after 6 seconds it
will return to normal operation.
10.
""
"""00 "
Refrigeration LED: during the delay start, LED flashes. During refrigeration, the LED is on; during temperature
constant state, the LED turns off.
Press button for 6 seconds to enter parameter setting(PAwill display and flash);and then press button,
E1, E2 CPA, E1 will display sequentially, press or button to display and revise the values; if no
more button is pressed within 6 seconds, it will exit and store new values. Note: only when it enters inner
parameter manual (PAis displayed) and enter correct password, the parameter values can be adjusted. If
the entered password is wrong, then all the parameters just can be checked and can not be changed, the set
temperature adjustment is still valid. If the user forget the password, then it need to resume factory defaults.
Only after enter correct password when it enters inner parameter menu (PAis displayed), CPAvalue can
be checked and modified. After enter inner parameter CPA press or button can display and change
password, and then press button to confirm and store new password. ( When CPA value is set to
that means cancel password).
Function details
1. Temperature control(When power on, press for once to cancel the delay and enter automatic control mode.)
After turning on for delay time(E40), the compressor starts operating when cold room temperature
(set temp.+ Hysteresis E3 ), and will be off when cold room temperature set temp.
To protect the compressor, it can not re-start unless the time when the compressor stops every time is
longer than the delay time (Parameter E41).
Refrigeration LEDRefrigeration LED
Defrost LEDDefrost LED
Fan LEDFan LED
