2. Begins to run immediately if higher than 50℉ and
begins to run after 5 minutes pause if lower
than 50℉.
2
Temperatur
e
Control
Compressor
LED
1. The Temperature can be changed by pushing up/down
buttons.
2. LED displays inside temperature
3. Buzzer buzzes 1 time whenever a button is pressed
4. Compressor automatically turns on and off by C-sensor
(Except error mode)
5. Comp. On/off temperature at C-sensor (℉)
Setting5.03.01.0-1.0-2.0
Comp On86321
Comp Off20-3-4-5
Setting-3.0-5.0-7.0-9.0
Comp On0-2-4-6
Comp Off-6-7-9-10.5
3
Defrost
Function
Heater
Compressor
1) Defrost function is controlled time interval setting.
2) Factory setting is every 8 hours.
3) If it becomes defrost cycle time, Defrost heater is
operated when D-sensor senses below 23℉.
4) Defrost heater terminates when D-sensor temperature
comes to above 53℉, then compressor will start after
10 minutes.
5) During defrost period, LED displays dF.
6) If D-sensor does not cut off defrost heater, main pcb
has a back up for defrost time, the maximum is
40 minutes.
7) Defrost can be set by pushing the button for 3 seconds.
(3h, 6h, 9h, 10h(ah) )
4
Error
Display
LED
1) Press `up' button 3 times while pressing and holding
`down´ button.
Above procedure switches normal display to error
display mode. And then 88 LED indicates, `(D1)' or
`(F3)'
or `(C1)' respectively.
2) 10 seconds after the last button pressed, error display
mode will be switched to normal display mode.
6-1-2. FUNCTION TABLE & MANUAL DEFROST
Page 61
NO
Function
Relative
Model
Description
1
Forced "Df"
(To Force
the Defrost)
Freezer
1. Press both “UP” & “DN” keys simultaneously more
than 3 seconds.
2. “Df” will show up in the display.
3. Comp will stop.
4. Heater will turn on (Defrost heater, Drain Fan
Heater, and Hose Heater).
5. Room Fan will stop.
2
To Turn off
the Forced
Defrost
(To release
the Defrost)
Freezer ,
Refrigerator
1. Press both “UP” & “DN” keys simultaneously more
than 3 seconds.
2. Temperature will show up in the display with the
beep sounds.
3
Forced "Df"
(To Force
the Defrost)
Refrigerator
1. Press both “UP” & “DN” keys simultaneously more
than 3 seconds.
2. “Df” will show up in the display.
3. Comp will stop.
4. Room Fan will start.
4
To Change
the Defrost
Interval
Time
1. Press both “UP” & “DN” keys simultaneously more
than 3 seconds.
2. “Df” will show up in the display.
3. Press the “UP” key more than 3 seconds.
4. The current interval time will show up in the display
(Factory default setup will 8 Hr)
5. Press the “UP” key to change the interval to the
other (5Hr, 6Hr, 8Hr, 10Hr (aH).
Page 62
6. ELECTRONIC CONTROL INSTRUCTIONS
CODE
Content
Indicates
Refrigeration state
CO
C-sensor
- OPEN
- Normal operation
- Time control
Comp ON : 6 MINUTES
Comp OFF: 11 MINUTES
CS
- SHORT
(D1) (F3) (C1)
D-sensor
- OPEN
- SHORT
Sensor
Model
Role
Wire
Color
D-sensor
Freezer
Detect Evap coil's temp. to start and terminate
defrosting.
WHT
C-sensor
Freezer
Detect inside air temp. to operate comp and to
indicate the inside temp. on the display PCB
YELLOW
T-sensor
Refrigerator
Detect inside air temp. to indicate the inside temp on
the display PCB
WHT
6-1-3. ERROR CODE TABLE
6-1-4. SENSOR DESCRIPTION
Page 63
6. ELECTRONIC CONTROL INSTRUCTIONS
6-2. REFRIGERATOR CONTROL
6-2-1. HOW TO USE THE DISPLAY PCB PANEL
Page 64
6. ELECTRONIC CONTROL INSTRUCTIONS
NO
Function
Controlled
Part
Description
1
Initial
Operation
1. LED displays inside temperature.
2. Begins to run immediately if higher than 41℉ and
begin to run after 5 minutes pause if lower than 41℉.
2
Temperature
Control
Compressor
LED
2. LED displays inside temperature
3. Buzzer buzzes 1 time whenever a button is pressed
4. Compressor automatically turns on and off by C-sensor
(Except error mode)
5. Comp. On/off temperature at C-sensor(℉)
Setting 39 38 37 36 35
Comp On42 41 40 39 38
Comp Off36 35 34 33 32
Setting 34 32 30 28
Comp On 37 35 34 32
Comp Off 31 29 28 26
3
Error
Display
LED
1) Press `up' button 3 times while pressing and holding
`down´ button.
Above procedure switches normal display to error
display mode. And then 88 LED indicates, `(D1)' or
`(C1)' respectively.
2) 10 seconds after the last button pressed, error display
mode will be switched to normal display mode.
4
Defrost
Function
Compressor
1) Defrost can be set by pushing the button for 3
seconds. (3h, 6h, 9h, 10h(ah) )
2) While the compressor runs for over 3 hours, defrost
system will
automatically be driven without any additional control
order.
6-2-2. FUNCTION TABLE
Page 65
NO
Description
4
How to control the
Defrost interval
1. Press the Up key for 3 seconds.
2. The Defrost interval currently set will be displayed
(Factory default : 8H).
3. Select the other interval by pushing the Up Key.
(5H → 6H → 8H → 5H in rotation)
4. Leaving it untouched for 3 seconds will
resume the normal operation.
5
Forced Defrost
1. Press Up/Down simultaneously for 3 seconds to activate
the
Defrost manually.
2. The 'dF" will get displayed and the defrost will start.
3. To change or see the Defrost duration, press Up key.
4. Leaving the Key untouched for 3seconds will
resume the letter "dF"
5. To deactivate the Defrost press the Up/Down key
simultaneously for 3seconds. Otherwise the defrost will]
continue for the duration set in 3).
6
How to change the
setup of Box Heater
Control (Power
Duration)
1. Press the Down key for 3 seconds to activate the setup.
2. The initial control value will be displayed (Default value : 1)
3. Change the value by pressing the Down Key
(1->2->3->4->1 in rotation)
4. The temperature will be displayed 3seconds after leaving the
key untouched.
Meaning :
1-> On 10 min. / Off 10 min.
2-> On 15 min. / Off 10 min.
3-> On 20 min. / Off 10 min.
4-> On 25 min. / Off 15 min.
Page 66
6. ELECTRONIC CONTROL INSTRUCTIONS
CODE
Content
Indicates
Refrigeration state
tO
T-sensor
- OPEN
- Normal operation
- Time control
Comp ON : 18 MINUTES
Comp OFF : 6 MINUTES
ts
- SHORT
(D1)
C-sensor
- OPEN
(C1)
- SHORT
6-2-3. ERROR CODE
Page 67
7. REPLACEMENT OF MAIN COMPONENTS
■ CAUTION
- DISCONNECT FROM POWER SOURCE BEFORE SERVICING
7-1. TOP PANEL PARTS
- MAIN PCB
- LOCK ASSEMBLY or POWER SWITCH
- DOOR SWITCH
A. Remove the screws located on top grill panel.
.
Page 68
7. REPLACEMENT OF MAIN COMPONENTS
■ CAUTION
- DISCONNECT FROM POWER SOURCE BEFORE SERVICING
B. Remove the screws located on bottom of top panel.
# caution :When unscrewing, hold the top panel.
POWER TRANSFORMER
C. Place the top panel on top of the cabinet.
Page 69
7. REPLACEMENT OF MAIN COMPONENTS
■ CAUTION
- DISCONNECT FROM POWER SOURCE BEFORE SERVICING
E. Pull out the harness located on back of top panel.
You can separate top panel out of the unit.
You can replace power switch, lamp switch and display PCB.
Page 70
7. REPLACEMENT OF MAIN COMPONENTS
■ CAUTION
- DISCONNECT FROM POWER SOURCE BEFORE SERVICING
7-2. REPLACING DOOR
A. Disassemble top panel as described section 6-1 A,B
B. Remove bottom grill by unscrewing the four screws located on each side
of bottom grill.
C. Open the capacitor cover.
■CAUTION
Page 71
7. REPLACEMENT OF MAIN COMPONENTS
■ CAUTION
- DISCONNECT FROM POWER SOURCE BEFORE SERVICING
D. Remove the hinge.
Page 72
7. REPLACEMENT OF MAIN COMPONENTS
■ CAUTION
- DISCONNECT FROM POWER SOURCE BEFORE SERVICING
PIN TENSION
PIN HINGE TOP
ASSY
HINGE
TOP
TOOL
DOOR
HINGE
SCREW
ASSY HINGE TOP
TOOL
REMOVER
7-3. DOOR SPRING ADJUSTMENT
A. Detailed structure of DOOR HINGE
B. Coordinated principle od DOOR TENSION
After Putting Tool for revolving DOOR-HINGE STOP-PIN HOLE, Insert
Door Hinge STOP-PIN into the hole after revolving up to the requested
TENSION.
Page 73
■ CAUTION
- DISCONNECT FROM POWER SOURCE BEFORE SERVICING
7. REPLACEMENT OF MAIN COMPONENTS
C. Remove the door hinge stop pin.
D. Place the door hinge stop pin and adjust the strength of the door spring.
Page 74
7. REPLACEMENT OF MAIN COMPONENTS
7-4.REFRIGERATION COMPARTMENT'S PARTS
- EVAPORATOR FAN MOTOR
- EVAPORATOR DEFROST HEATER
- EVAPORATOR COIL
- D-SENSOR, C-SENSOR, T-SENSOR
? DRAIN HOSE HEATER
A. Disassemble lamp shield
B. Disassemble Evaporator Panel
Page 75
7. REPLACEMENT OF MAIN COMPONENTS
C. Pull out the lamp
D. Replacing evaporator fan motor.
A-1. Disconnect the fan motor's harness.
A-2. Remove the four screws that are located on bottom of fan motor.
Page 76
7. REPLACEMENT OF MAIN COMPONENTS
E. Replacing sensor
E-1. FREEZER C-sensor : Remove as illustrated below and pull-out the
FREEZER C-sensor from the cover.
E-2. FREEZER D-sensor
Page 77
7. REPLACEMENT OF MAIN COMPONENTS
F. Drain hose heater
F-1. After separating Evaporator cover from the freezer, set aside the screws.
F-2. Pull out the heater for drain hose from the Evaporator.
Cover and eliminate it with care in the direction of front side.
F-3. Install the new heater for drain hose in reverse order.
Page 78
7. REPLACEMENT OF MAIN COMPONENTS
1. Open Door
2. Removal Screw
3. Screw The Front
7-5. UNIT - PARTS
A. How to replace the COMPRESSOR, its Parts and Refrigerant.
A-1. Remove the Mounting Screws from the sides of the front BOTTOM GRILL.
A-2. Remove the BOTTOM GRILLE as the picture
Page 79
7. REPLACEMENT OF MAIN COMPONENTS
A-3. Remove the front Screws for the UNIT BASE.
A-4. Pull out the UNIT BASE to the front side.
Page 80
7. REPLACEMENT OF MAIN COMPONENTS
A-5. Remove the pipe connected to the COMPRESSOR.
A-6. Remove the COMPRESSOR Mounting SCREWs, Replace the COMPRESSOR
and weld the piping.
Page 81
7. REPLACEMENT OF MAIN COMPONENTS
A-7. Remove the side Cover of the COMPRESSOR.
A-8. Replace the O.L.P/PTC RELAYS.
Page 82
7. REPLACEMENT OF MAIN COMPONENTS
A-9. Vacuum the Pipe at least 30 ~ 40 minutes and make enough vacuum.
A-10. Fill up the Refrigerant in the volume set forth in the service manual.
A-11. After the refrigerat is filled up, check any gas leakage with soap bubbles.
A-12. Put all the parts together in the retro sequence of the disassembly.
Page 83
7. REPLACEMENT OF MAIN COMPONENTS
B. BALLAST
1. Remove four screws securing the sign frame end separate sign frame end.