LF-318
Freezer controller
1030062 REV:2 C,S:758CH 070307
Automatic panel lockup
If the control panel is unlocked (i.e.OOis selected) and controller is not in the parameter setting mode, the control panel will be locked
automatically after 30 seconds.
Setting protective parameters
PressSETkey, display will flash symbol8883 times. While the display is flashing, pressandkeys simultaneously until parameter
LOis showed. PressSETkey again, display will show the parameter setting. Useorkeys to change the setting and then press
SETkey to select the next parameter. All p
rotective parameters are
shown in p
rotective system parameters
table, and can only be
modified when parameter LO is set to “n”.
When the last parameter (rt) is selected, pressSETkey again can leave parameter setting procedure and save all settings.
If no any key is pressed within 30 seconds during parameter setting procedure, system will leave the parameter setting procedure and save all
settings automatically.
Other operations
After controller power on and the system is in the duration of compressor start-up delay, presskey can startup compressor immediately
(display will show “Fon”).
When high or low temperature alarm occurs, press “Manual defrost” key can cease the buzzer.
Compressor total running timepress both “” and “” keys simultaneously. The display will show characters “tot” and numbers and flash
3 times in turn to indicate the total running time. For example, if display is showing “tot, 001, 234”, the total running time is 1234 hours.
To check the temperature of evaporator sensor, presskey. Display will show symbol “L2” firstly and then the temperature value.
Condenser fin cleaningWhenCLnis shown on display, pressOn/Offkey can reset the error code and the system will recount the
cleaning interval.
Function keys
ON/
OFF
Power on/off
To increase or decrease value
SET
Parameter setting key
Manual defrost
To turn on/off defogger (defogger
will be turned off when power is off)
To turn on/off the indoor
light appliance
LED indicators
(
Power on indicator
(
! " # $% & # ' ( & ' ) ' # * % + + , # # ' # *
! " # $% & # ' ( + , # # ' # *
(
LED on, defogger is on
(
! " # $
indoor light appliance is
on
- . / 0
(1 + #
LED flash, compressor is in start-up
delay
LED on, compressor is running
2 3 4 5
( LED on, system is defrosting
Error codes
Symbol Description
E1H Indoor sensor shorted or temperature higher than +80°C
E1L Indoor sensor opened or temperature lower than -50°C
E2H Evaporator sensor shorted or temperature higher than +80°C
E2L Evaporator sensor opened or temperature lower than -50°C
AH High temperature alarm
AL Low temperature alarm
Sensor specifications
6 7 ( # ( + ' ) 8 ! " ( ' ' 9 # : ; < : = 9 > 6φcopper head
Isolated wir
NTC sensor with BLACK PVC/1.5M/4.5cm 6φ
copper head
Note
Lengthen your
NTC sensor probe, Please pay
attention on below:
(1)
Turn off the system power.
(2). To avoiding short circuit, the connection points should be
interleaved, as shown on the right.
Wiring diagram
123
Sensor
Power
Indoor
Evaporator
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