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LF-313LD-RS-HP
Refrigeration system controller
Panel
Technical data
Power supply110V/220V AC/50~60Hz Temperature range-50~+80
DisplaySeven segment LED
Working temperature-15~+70
MountingSnap-in(Panel)
Accuracy1
3
Fit-in size137*28*32mm (Panel)
Resolution0.1
Fit-in size171*141*39mm3(Rear box)
Maximum output ratingCompressor 30A/250V(Resistance load)
Heater 30A/250V(Resistance load)
FanLampDefog 8A/250V(Resistance load)
System parameter table
No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Symbol
tS
td
Sd
dt
di
dd
dS
FS
CL
rt
tA
Description
Set compressor stop temperature
Define differential temperature
Compressor start time delay after stop
Defrost typeELorHS
Defrost interval time
Defrost duration time
Defrost stop temperature
Fan start temperature
condenser cleaning time interval
Temperature up delay time
Sensor calibration adjustment
Range
-50°C ~ +80.0°C
+0.1°C ~ +15.0°C
0 ~ 15 Min.
EL/HS
0 ~ 24 Hour
0 ~ 60 Min.
0.0°C ~ +80.0°C
-50°C ~ +30.0°C
0~250 day
0~15 sec.
-10°C ~ +10.0°C
Default
-20°C
+4.0°C
2Min.
EL
4 Hour
20 Min.
+25.0°C
0.0°C
0 day
0 sec.
0.0°C
Lock system parameter table
No.
Symbol
Description
Range
Default
y lock/n unlock
Select system parameters to lock or unlock
y
1.
Lo
The upper temperature limit
2.
tH
tS ~ +80.0°C
+50.0°C
The lower temperature limit
3.
tL
-50°C ~ tS
-50°C
High temperature alarm
4.
AH
tS+td~+80.0°C
+50.0°C
Temperature reachAHafterHtvalue alarm start working
0~180 Min.
90 Min.
5.
Ht
Low temperature alarm
6.
AL
-50°C~tS
-30°C
Temperature reachALafterLtvalue alarm start working
0~180 Min.
60 Min.
7.
Lt
ti
Defrost interval time type
ti(hour)/CP(quarter hour)
8.
tC
y stop/ n running
Fan working type
y
9.
FL
Fan stop time(option for FL=y)
0~60 Min.
3 Min.
10.
OF
Fan run time(option for FL=y)
0~60 sec.
15 sec.
11.
On
Note (1).After chooseyon the first lock system parameterLO; means you select to lock the system parametersdisplay will show system
parametertSonlyand it can only be adjusted within the highest tH and lowesttLtemperature limitno other system
parameters can be changedthereafter. On the contrary ifn is selectedthen all system parameters can be modified.
(2).tCmeans defrost time count type .ti means hour’s unitCPmeans compressor running timeuse quarter hour unit.
Self test function
Error code
E1H
E1L
E2H
E2L
Description
Sensor shorted or temperature higher than +80.0°C
Sensor opened or temperature lower than -50°C
Evaporator sensor shorted or temperature higher than +80.0°C
Evaporator sensor opened or temperature lower than -50°
Error code
AH
AL
CLn
EHP
Description
High temperature alarm
Low temperature alarm
Condenser need to be clean
High pressure Alarm
Operation :
A. System parameter setting
1.Press SETkey the display flashes pattern888for 3 times then shows the symbol of the first system
parametertS this means the controller entering the parameter modifying phase can press orkey
to scroll up/down the parameter that is going to be adjust.Press SETkeythe display shows set valuecan push
orkey to increase or decrease the value by one unitpress theSETkey the controller goes to modify
the next parameter. PressSETkeythe display shows888
then display cabinet-room temperature mean that you finish parameters setting.
1030095 REV:1
C,S:72D3H 102808
LF-313LD-RS-HP
Refrigeration system controller
B.
Lock system parameter setting
1.PressSETkey for three secondsthe display begins flashing pattern888. While flashingpress bothandkeys
together until display showsLo(which means into parameters lock). PressSETagain the modified value would be showed.
At this timepressor to lock by choosingyor to unlock by choosingn.
2.After select system parameters to unlock pushSETkey the display shows pattern tH
can press orkey to scroll-move
to the next parameter.
C. Other operations
1.After sent city power to controllerpushON/OFFkey to Power-onPonor Power-offPof.
2.After powerON
the compressor is delaying for protecting. If you want to bypass the delay time and start immediately running the
compressorthen you can pushkey until display showsFon. The controller
then forces compressor to start up immediately. This special function is only effective on the power on stage.
3.Total operation hours (tot) The total compressor running time can be showed on display by showing three sets digits through push
Press button andbutton simultaneously. For example if the total running time is 12345 hours the display will show first set
“tot” (means total running time) then followed by the second digit set 012then the last digit set345.
4.If there is no key was pushed within 30 seconds the controller jump back normal temperature display
**While “ CLn ” is flashing , pressto cease alarm.**
**To reset the “CLn”error code, useon/offkey to trun Off power and turn on power again . The system will re-count the cleaning time.
LED Indicators
Function keys
ON/
OFF
Power on/off
The controller power supply key
Yellow
Lamp on power supply
Increase/
Decrease
To increase or decrease one unit value
Green
Lamp flash compressor start up delay
Lamp on compressor running
Set
Request for setting the parameter
Red
Lamp on system defrosting
Manual
defrost
Push this key to do manual defrost
Yellow
Lamp on fan is running
Door heater
To on/off the door heater for clarify the
showcase door
Yellow
Lamp on door heater is on
Light on/off
To on/off the indoor light appliance
Yellow
Lamp on indoor light appliance is on
SET
Sensor description 1.5M
1.5M
4.5cm
4.5cm
6
6
Isolation wire NTC sensor with BLACK VC/1.5M/4.5cm6φ metal head NTC sensor with RED PVC/1.5M/4.5cm6φ metal head
Point 1
Lengthen your NTC sensor probe Please pay attention on below
(1).Off the system power.
(2).To avoid short circuit the connection points should be interleaved as shown right.
NTC head
Point 2
Controller
Wiring diagram
LF-3 1 3 LD -R S
R ED
2 2 0 V
B L A C K
1 1 0 V
High
P re s s u re
N D S1
S2 G
3 2 1
R E D
W H IT E
Evaporator
(R E D )
B L A C K
R O O M
(B L A C K )
S E N S O R
12
11
10
9
8
7
6
5
4
3
2
1
W H IT E
DEFOG
L A M P
FA N
DEFROS COMPT
R E S S OR
AC1 AC2
p o w e r lin e
1030095 REV:1
C,S:72D3H 102808