CombiSteel SF-103ST User manual

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

2.
3. Defrosting by turning off compressor
After worked for a defrost interval F2 will enter defrost state automatically.The defrost LED is on, the
compressor stops.
When reached defrost duration F1, will exit defrost and enter automatic refrigeration state.
When the defrost interval is set to "00", the function of automatic defrost will be cancelled.
4. Display during defrost
When setting parameter F4=0, it will display cold room temperature normally.
When setting the parameter F4=1,the room temp. is locked during defrost, and the last value before
defrost is displayed. When defrost ends, normal display will be resumed after 20 minutes delay of room
temp. Display (or cold room temperature set temperature + hysteresis E3). The defrost LED flashes during
thelocked delay.
When setting parameter F4=2, it will display "dEF ". When defrost ends, normal display will be resumed after
20 minutes delay of room temp. Display (or cold room temperature set temperature + hysteresis E3). The
defrost LED flashes during the locked delay.
5. Fan control:
During refrigeration, the fan start mode is determined by parameter F5 outside the bracket. During defrosting,
the fan start mode is determined by parameter F5 inside the bracket. After defrosting, the fan start pass F8 time.
6. Energy saving mode temperature control Note: When the energy-saving start-up time is the same as the
shutdown time, it will not enter the energy-saving mode)
When the system work to energy saving start time, the operation temperature will set to (original set temperature
+ t1) values automatically, flash display tE. When operate to energy saving end time, the operation temperature
will adjust to the original set temperature automatically, and display normally. When the energy saving mode
t0=1, the energy saving mode start, when t0=0, the energy saving mode stop.
7. Energy saving mode light control (Note: When the lighting time is the same as the lighting time in energy-saving
mode, the lighting is always on, and it can also be turned on or off manually)
When system work to light on time, the light is on automatically.When work to light off time, the light is off
automatically.
During energy saving mode can press upward button to control the light switch, when work to
the next light on or off time, the light is on or off automatically.
Temperature display
When A1=01, the temperature will display in low speed: in the speed of every 30 seconds 1 degree to reach
the actual temperature, and do not affect the compressor work normally. When power on, and the actual
temperature reach the set temperature for once, only if the cold room temperature is within the range of
(set temperature+E3+2 /4 ), will display the set temperature, otherwise the temperature will display
in low speed.
Set temp.
F1
F2
45
49
02
35.6
45
113
10
50
01 10
02 18
03
09
E1
E2
E3
E40
E5
00 50 99
PA
82
E41
05 05
09 09
E7
E8
01
F4
F5
F8
03
CF
CPA 82
H1
H5
H2
H6
45
113
00min
45 H2/113 H2
H1 45
H1 49
40
40
LS 00
-1
00
A1
00
07
04
t0 01
t1
t2 00 23hr 05hr
t3
00 59min
00min
t4 00 23hr 11hr
t5
00 59min
00min
t6
00 23hr 00hr
t7
00 59min
00min
t8
00 23hr 00hr
t9
00 59min
00min
00 15
00 27
Parameter
Function Set range Default
Parameter
Function Set range Default
Password
Lower set point limit
Higher set point limit
set temp.
Temp. Hysteresis
When power on, Comp. start delay time
(Effective for the first time
after power on)
00 10min 02min
Reach the temperature, comp.
Stop,the comp. Must delay start time
00 10min 05min
Offset on room temp.
Cold-room sensor failure
Compressor stop time
01 180min 15min
01 180min 45min
Cold-room sensor failure
compressor operation time
Max. Defrost duration
01 60min 10min
Defrost interval time
00 24hr 04hr
Power on fan
start mode
Display during defrost
00=Normal display
01 = Last value before
defrost
02=Defrost code dEF
00=Parallel with comp.(stop when defrost)
01=Continuous running( stop when defrost)
02=Parallel with comp.(start when defrost)
03= Continuous running (start when defrost)
04=when comp. Stops, on for3 minutes and off for 1 minute
(start when defrost)
05= when comp. Stops, on for 2 minutes and off for 2 minutes
(start when defrost)
After defrost fan start time
00 20min 00min
Change menu
password
00-99 (if it is set to 00, that means
cancel password)
=Celsius
=Fahrenheit
Temperature unit
00=Normal display
01 = locked low
temperature display
Room temperature
display mode
Continue alarm
delay
00 180min
00 180min 60min
Power on alarm
delay
Low temperature alarm
for cold-room sensor
High temperature alar
m for cold-room sensor
Set temp.
Adjustment mode
00=set temp. adjustable
01=set temp. Non-adjustable,
can be checked only
Light off time: min
Energy saving switch
00=off 01=on
Energy saving temp.
Hysteresis
Energy saving power on time: hr
Energy saving power on time: min
Energy saving stop time: hr
Energy saving stop time: min
Light on time: hr
Light on time: min
Light off time: hr

9. Abnormal work mode:
10.Circuit Diagram:
Notes for Installation
1. The sensor cable leads must be kept separately from main voltage wires in order to avoid high frequency
noise induced. Separate the 12V low-voltage lines from the high-voltage lines of the controller.
2. When install the sensor, it shall be placed with the head upward and the wire downward.
3.In case of long-distance probe installation from the controller, the probe cable may be prolonged up to
100 m max. without any re-calibration
4. The temperature controller can not be installed in the area with water drops.
5. The temperature controller can not be installed in the corrosive and strong electromagnetic pulse
interference places.
Failure code
Description
1H
1L
Connect
main
control board
Connect
main
control board
Operation Mode
Compressor works according
to E8, E7mode
Cold-room sensor is short-circuited or exceeds
high temperature limit ( 99 /210 )
Cold-room sensor is open-circuited or exceeds
low temperature limit ( 45 / 49 )
8. High/low temperature overrun alarm
After power on delay time exceeds parameter H5, when cold-room temperature is higher than the value
of parameter H1, after alarm delay time (parameter H6),the cold-room temperature and Hi will display and flash,
it will exit defrost and start the compressor. When cold-room temperature is lower than the value of parameter H2,
after alarm delay time (parameter H6),the cold-room temperature and Lo will display and flash, the compressor
control output will be disconnected .At the same time the buzzer will sound, the sound can be stopped by pressing
random button.
BlackBlack
11223344556677
220-240VAC220-240VAC
LL
OUT4OUT4
OUT3OUT3
30A30A 10A10A
NNNNNNNN
OUT5OUT5
10A10A
LL NN
Cold-room
sensor
Cold-room
sensor
WhiteWhite
WhiteWhite
Connect
the display
Connect
the display
Light.Light.
FanFan
Comp.Comp.