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7. Function and Usage of Refrigerator
7-1. Panel Display
Basic type (
NTA
)
External type (
FTA/DTA
)
Change in the
display lamp
7-2. Temperature-Control function
1. Temperature-Setting Function of Freezer
1) At the first POWER ON, ÒMEDIUMÓ (3rd step) is automatically selected.
2) Select the temperature among five steps, WARMER, (WARMER-MEDIUM), (MEDIUM), (MEDIUM
-COLDER), and COLDER by pushing one button.
3) On pushing the button for temperature-setting in freezer, light on the display panel is moved in order from
ÒWARMERÓ to ÒCOLDERÓ.
Item At the first POWER ON 1st push 2nd push 3rd push 4th push Remark
(MEDIUM) (MEDIUM-COLDER) COLDER WARMER (WARMER-MEDIUM)
app. -19 app. -20 app. -21 app. -16 app. -17.5
2. Temperature-Setting Function of Refrigerator
1) At the first POWER ON, ÒMEDIUMÓ (3rd step) is automatically selected.
2) Select the temperature among five steps, WARMER, (WARMER-MEDIUM), (MEDIUM), (MEDIUM
-COLDER), and COLDER by pushing one button.
3) On pushing the button for temperature-setting in refrigerator, light on the display panel is moved
in order from ÒWARMERÓ to ÒCOLDERÓ.
Change in the
display lamp
Item At the first POWER ON 1st push 2nd push 3rd push 4th push Remark
(MEDIUM) (MEDIUM-COLDER) COLDER WARMER (WARMER-MEDIUM)
app. 2 app. 0.5 app. -1 app. 5 app. 3.5
Specified temperature
in the freezer
Specified temperature
in the refrigerator
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Notice
The specified temperature in the above table, from data when measured in unload state and at 1/3 H
inside the room, is only to describe the temperature at each step generally. The actual temperature
depends upon the surrounding conditions and the loading state.
Set Power-Freezing and Power-Refrigerating by pushing the separate button.
On pushing the button for power-freezing and for power-refrigerating, selection/cancellation (lamp
on/lamp off) is selected in order.
In spite of the selection of power-freezing or power-refrigerating, the temperature setting in the Freezer
and Refrigerator is not changed.
With the selection of Power-Freezing or Power-Refrigerating, you can change the temperature setting of
the freezer and refrigerator.
1. Power-Freezing Function
1) On the selection of Power-Freezing, COMP and F-Fan operates continuously for 2 hours and 30 minutes.
2) In spite of the Power-Freezing operation, the refrigerator operates according to the current setting.
3) On the finish of Power-Freezing (after continuous operation of COMP and F-Fan for 2 hours and 30 minutes),
lamp indicating Power-Freezing turns off automatically and the freezer operates according to the
temperature setting.
2. Power-Refrigerating Function
1) On the selection of Power-Refrigerating, COMP and R-Fan operates continuously till the temperature inside
the refrigerator becomes about -4.0 .
2) After the temperature inside the refrigerator is to be -4.0 , Power-Refrigerating function stops after 1hour ÒCOLDERÓ operation according to the internal function regardless of the current setting.
3) When the temperature inside the refrigerator does not become -4.0 in spite of the selection of PowerRefrigerating function and the continuous operation of COMP and R-Fan for 2 hours and 30 minutes, PowerRefrigerating stops.
4) On the finish of Power-Refrigerating (after continuous operation for 2 hours and 30 minutes or approach to
-4.0 and then, ÒCOLDERÓ operation for 1 hour), lamp indicating Power-Refrigerating turns off automatically
and the refrigerator operates according to the temperature setting.
5) If the current setting is ÒWARMER-MEDIUMÓ (2nd step) or ÒWARMERÓ (1st step), the lamp indicating
Power-Refrigerating turns off after 1-hour ÒCOLDERÓ operation, but 1-hour ÒMEDIUMÓ operation continues
according to the internal function.
At this time, if the setting is changed, immediately cancel the ÒMEDIUMÓ operation and perform the
operation according to the changed setting condition.
6) If there is no change of setting during 1-hour ÒMEDIUMÓ operation, perform the operation according to the
temperature setting after ÒMEDIUMÓ operation stops.
3. Concurrent selection of Power-Freezing and Power-Refrigerating
1) Each function operates independently. It mean that COMP and F-Fan operate continuously by PowerFreezing regardless of Power-Refrigerating function and COMP and R-Fan by Power-Refrigerating function
are continuously operated till the temperature inside the refrigerator becomes -4.0 .
7-3. Power-Freezing and Power-Refrigerating
Notice
If the temperature inside the freezer is above -10 and that inside the refrigerator is
above 10 such as the case of the first POWER ON, Power-Freezing and Power-Refrigerating will
not work as you can expect. However, this is not the usual case and so, explanation is omitted here.
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7-4. ALARM function
1. Button TOUCH sound (ÒDING-DONGÓ sound)
1) If you push each button on the CONTROL PANEL, ÒDING-DONGÓ sounds to confirm the push.
2) If you push two buttons at one time or if you do other wrong-doings, ÒDING-DONGÓ does not sound.
2. DOOR-OPEN alarm (ÒDING-DONGÓ sound)
1) After two minutes with the door of the freezer or the refrigerator opened, alarm sounds ten times.
2) If the door is still in open in spite of the first ten-time alarm, alarm continues 10 times per minute.
3) The alarm stops immediately when the door of the freezer or the refrigerator is closed.
4) If you select OFF for the alarm (for the model with alarm-off function) (Alarm-lamp out) or if you select OFF
for the alarm while alarming, DOOR-OPEN alarm will stop although the door is in open.
5) In spite of the selection of OFF for the alarm, ÒDING-DONGÓ for BUTTON-TOUCH operates normally.
3. Forced-operation and Forced-defrost alarm (ÒBEEPÓ sound)
1) On the selection of Forced-operation and Forced-defrost, ÒBEEPÓ alarm will sound.
2) On the selection of Forced-operation, alarm will continue until the automatic cancellation (after 24-hour
Forced-operation) or till the cancellation function is selected.
3) Also, alarm for Forced-defrost continues until the finish of Forced-defrost (including the pause time) or the
selection of the cancellation.
7-5. Defrost function
1. On the first POWER ON, concurrent defrost for freezer and refrigerator operates
after the accumulated operation time for COMP ON is above 4 hours.
2. Since then, defrost interval will vary from 6 hours to 48 hours according to the operation and
the surrounding conditions.
3. After finish of the first defrost, PRE-COOL function operates for 20 minutes at the start of the
defrost to minimize the temperature increase caused by the defrost. However, the PRECOOL function depends on the temperature inside the refrigerator at the start of the defrost.
4. If the temperature inside R-room is above 0 , PRE-COOL function operates, but if the
temperature inside R-room is below 0 , PRE-COOL function does not operate. In case of F
room, if the temperature is above -21 , PRE-COOL function operates and if below -21 , the
function does not operated.
5. In the above 4, if the temperature of F-room is above -21 (PRE-COOL function condition),
PRE-COOL function will be operated both at F and R-room regardless of the condition inside
R-room. If the case is only about R-room, PRE-COOL function will be operated
independently. It means that PRE-COOL function will be operated only in R-room when
only R-room is in the condition for PRE-COOL.
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7-6. TEST function
TEST function is for quality control of PCB and the product, in-process control, and SVC.
After check of the function of the product by the selection of TEST S/W, POWER should be turned ON
again to perform self-diagnostic function.
1. Forced-Operation function
1) If you select button on MAIN PCB one time, COMP operates immediately without 5-minute DELAY.
So, attention should be paid because if you perform Forced-operation at the COMP-OFF time, OVER LOAD
may occur.
2) On the selection of Forced-operation, ÒCOLDERÓ for the freezer and ÒCOLDER-MEDIUMÓ for the
refrigerator are selected automatically, COMP and F-Fan are operated on continuous basis, and R-FAN
in the refrigerator is controlled by ÒO(MEDIUM-COLDER)Ó setting.
3) Forced-operation is effective only for 24 hours. It means that, 24 hours after the start of Forced-operation,
concurrent defrost in freezer and refrigerator is conducted automatically and normal operation
starts according to the setting for freezer and refrigerator.
4) To cancel Forced-operation, turn ON again after POWER OFF (RESET) or select TEST CANCELLATION
MODE as described in the below Ò3Ó.
5) On Forced-operation, alarm (0.5 seconds ON/0.5 seconds OFF) continues to the finish of Forced-operation.
There is no cancellation way.
2. Forced-defrost function
1) If you push TEST button one more in Forced-operation state, Forced-operation is immediately canceled and
defrost function operates in refrigerator.
2) At this time, BEEP alarm will sound for 3 seconds at the start and continues on 0.75 seconds ON/0.25
seconds OFF basis during R Forced-defrost operation.
3) If you allow the above R-defrost function to operate, normal operation will start after the finish of the
defrost.
4) If you push TEST button one more in R Forced-defrost operation, concurrent defrost for R and F-room
operates.
5) Also, BEEP alarm will sound for 3 seconds at the start of concurrent R and F-defrost and continues on 0.25
seconds ON/0.75 seconds OFF basis by the finish of concurrent R and F-defrost.
3. Test Cancellation Mode
1) If you push TEST button one more in concurrent R and F-defrost, concurrent defrost will stop and normal
operation will start.
Notice
TEST function will operate STEP BY STEP and so, it is not possible to change from 1 STEP (Forcedoperation) to 4 STEP (TEST CANCELLATION MODE). You should go through all STEP to perform the
desired function. It is preferred to POWER ON after OFF on operation of TEST function.
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7-7. Self-Diagnosis Function
1. Self-Diagnosis Function on the first POWER-ON
1) On the first Power-on, lamps are ALL ON and self-diagnosis function operates internally.
2) If there is no fault on the self-diagnosis, DISPLAY will show the first normal state.
3) If there is any fault on the self-diagnosis, the relevant LED will flicker and alarm will sound.
4) ERROR (indicating fault) display by the self-diagnosis will continue till all the relevant problems is fixed or
the self-diagnosis is canceled.
5) When the relevant problems is solved, DISPLAY will return to the normal MODE.
6) After fixation of refrigerator, power should be off and on again to check whether the fault is corrected.
7) So, if there is a need to check SENSOR OPEN & SHORT for A/S, sensor can be checked through the selfdiagnosis operation by power-off and on.
8) If there is any problem, the relevant DISPLAY is as follows.
No Item Relevant LED Problem Remark
01
02
03
04
05
06
07
ICE-MAKER
SENSOR
Temperature setting in
the refrigerator
ÒWARMERÓ (1st step)
OPEN and SHORT type problem with
sensor located at the bottom of ice tray -
problem with wire connection
Temperature by sensor is
above +50 and
below - 50 on the model
with Ice-Maker
R-Room
R-Sensor
Temperature setting in
the refrigerator
ÒWARMER-MEDIUMÓ
(2nd step)
Detach of R-room sensor housing,
contact problem, wire-snapping, Short,
R-Sensor fault and so on.
Problem display when
temperature by R-sensor is above
+ 50 and below - 50
on the model with Ice-Maker
R-Room
Defrost-Sensor
Temperature setting in
the refrigerator
ÒMEDIUMÓ (3rd step)
Detach of R-room sensor housing,
contact problem, wire-snapping, Short,
R-Sensor fault and so on.
Problem display when
temperature by R defrost-sensor is
above + 50 and below - 50 on
the model with Ice-Maker
ICE-MAKER
KIT
Temperature setting in
the refrigerator
ÒCOLDERÓ (4rd step)
Problem with MICRO S/W, Motor,
Gear, and other wiring system inside
Gear Box
When normal operation does not
return in spite of 3 Eject operation
on the model
with Ice-Maker
Ambient
Sensor
Temperature setting in
the freezer
ÒWARMERÓ (1st step)
Detach of Ambient-Sensor housing
inside PCB Base at the top of the
refrigerator, Contact problem, Wire-
Snapping, Short, Sensor fault and so on
Problem display when
temperature by Ambient-sensor
is above + 50 and below - 5000
on the model with ice-maker
F-Room
F-Sensor
Temperature setting in
the freezer
ÒWARMER-MEDIUMÓ
(2nd step)
Detach of F-Room Sensor housing inside
PCB Base at the top of the refrigerator,
Contact problem, Wire-Snapping,
Short, Sensor fault and so on
Problem display when
temperature by F-sensor is above
+ 50 and below - 50 on the
model with ice-maker
F-Room
Defrost Sensor
Temperature setting in
the freezer
ÒMEDIUMÓ (3rd step)
Detach of Defrost-Sensor housing
inside the evaporator of F-Room,
Contact problem, Wire-Snapping,
Short, Sensor fault and so on
Problem display when
temperature by F Defrost-sensor
is above + 50 and below - 50 on
the model with Ice-Maker
Note : This self-diagnosis operates when there is OPEN and SHORT type problem with Sensors. If the
changes in Sensor are within the ranges of the temperature described in the remarks, they are not
judged to be fault and the appliance operates normally.
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7-8. Load state display function
1. If you push buttons for ÒPOWER-FREEZINGÓ and ÒPOWER-REFRIGERATINGÓ for 3 seconds
during the normal operation, all the temperature-setting DISPLAY for the freezer and refrigerator
will be on. At this time, if you withdraw finger from the buttons, the temperature-setting
DISPLAY for the freezer and refrigerator will be ALL ON/OFF for about 2 seconds at 0.5-second
interval. At this time, if you push button for the temperature-setting for the refrigeration
during ON/OFF, load state display function will start (with ÒDING-DONGÓ alarm).
2. Load state display MODE shows the load that MICOM signal is outputted. But, it means the
output of MICOM signal. It does not show whether the load is actually operated. It means that,
in spite of DISPLAY showing the operation of load, there is a possibility of none-operation by
fault in the actual load or in RELAY on PCB. So, this function can be practicable on A/S.
3. Display continues for 30 seconds. After 30 seconds, the former-setting state will start
automatically.
4. The relevant DISPLAY showing load state are as follows.
2. Self-Diagnosis function during the normal operation
1) If you push buttons for ÒPOWER-FREEZINGÓ and ÒPOWER-REFRIGERATINGÓ simultaneously for about 3
seconds during the normal operation, ALL ON/OFF in the temperature-setting DISPLAY will continue for
about 2 seconds at 0.5-second interval.
If you push buttons for ÒPOWER-FREEZINGÓ and ÒPOWER-REFRIGERATINGÓ simultaneously for about 5
seconds, including 2 seconds for LED ON/OFF, self-diagnosis function is selected.
2) At this time, the refrigerator will return to the self-diagnosis operation with ÒDING-DONGÓ alarm.
3) While the self-diagnosis function is in operation, the self-diagnosis will be performed in order from
ÒCOLDERÓLED of the freezer with ALL ON of the temperature-setting display for the freezer and refrigerator .
4) On ERROR, display will continue for 30 seconds and then, the refrigerator will return to the normal
operation state regardless of fixation of the relevant component. (With ÒDING-DONGÓ alarm)
5) Button push cannot be inputted during the self-diagnosis operation.
6) Among the items of the self-diagnosis, ERROR CHECK of ICE-MAKER SENSOR and ICE-MAKER function
will be done only on the model with the ICE MAKER.
No Item Relevant DISPLAY LED Meaning Remark
Load related with the freezer
1 COMP Freezer ÒWARMERÓ(1st step) On COMP operation, relevant LED ON
2 F-FAN Freezer ÒWARMER-MEDIUMÓ On F-FAN operation, relevant LED ON
(2nd step)
3 F-Defroster HEATER Freezer ÒMEDIUMÓ (3rd step) On F-Defroster HEATER operation, relevant LED ON
Load related with the refrigeration
4 R-FAN Refrigerator ÒWARMERÓ (1st step) On R-FAN operation, relevant LED ON
5 R-Defroster HEATER Refrigerator R-Defroster HEATER operation, relevant LED ON
ÒWARMER-MEDIUMÓ (2nd step)
Mode display
6 START MODE ÒPOWER-FREEZINGÓ If normal freezing does not operate on the first
(First mode) power on, relevant LED ON
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No Item Relevant DISPLAY LED Meaning Remark
7 Overload condition ÒPOWER-REFRIGERATIONÓ If the ambient temperature is above 35 ,
relevant LED ON
8 WARMER-temperature Freezer ÒCOLDERÓ If the ambient temperature is below
condition (5th step) 17 , relevant LED ON
9 Normal condition No display LED among Normal operation state Ambient temperature is
3 MODE displays means between 18 and 34 and normal freezing state
normal MODE
These functions are limited only to the MODEL that ice and water can be obtained without opening of DOOR.
Among the functions of this ice dispenser, all functions are operated by the mechanical system except the
regulation of CUBE RELAY for obtaining of cube ice and the regulation of light in the DISPENSER, which are
regulated by MICOM.
1. Light ON/OFF function
1) If you push button for Light ON/OFF on DISPLAY, lamp in the DISPENSER will be ON/OFF. To prepare
the case of using at night, lamp in the DISPNSER will be regulated through LIGHT RELAY on MAIN PCB
according to button selection.
2) ON/OFF is toggled by 1 button and it is limited to the MODEL with DISPENSER (SR-S24FTA).
3) As a means of safety, it there is no OFF signal for 20 seconds after lamp selection, lamp turns off
automatically.
4) To turn on the lamp again, push the buttons for lamp ON/OFF.
5) On the first POWER ON, OFF function will be operated.
2. CRUSHED ICE / CUBE ICE / OFF selection function
1) This function is to operate CRUSHED ICE/CUBE ICE/OFF in order by user selection on DISPLAY. By
pushing one button, CRUSHED ICE CUBE ICE OFF CRUSHED ICE is selected in order.
2) On the first POWER ON, CRUSHED ICE is automatically selected.
3) On the selection of CRUSHED ICE, operate GERADE MOTOR to get CRUSHED ICE in the outside when ice
is made in the ice maker and ice LEVER is operated.
4) On the selection of CUBE ICE, operate GERADE MOTOR and ICE SOLENOID to get CUBE ICE in the
outside when ice is made in the ice maker and ice LEVER is operated.
5) If you turn off all display lamp for ÒCRUSHED ICEÓ and ÒCUBE ICEÓ by pushing button for ice, no ice is
made because of stop of ICE MAKER function.
7-9. ICE DISPENSER and WATER DISPENSER function(SR-S24FTA)
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(1) At the moment of selection of stop function, ice-making function stops, but on eject, return to
horizontality, and water-supply, stop state will be maintained after finish of water-supply.
(2) When OFF function is selected, ice-making function stops. If you push button to select CRUSHED ICE
or CUBE ICE, ICE-MAKER will continue to operate from the stop of ice-making. (This means that icemaking function does not operate from the first.)
(3) In spite of operation of OFF function, ice LEVER will operate normally. This is not the disorder. So, ice
left in the tray of the ice-maker can be used normally. On operation of ice LEVER, GERADE MOTOR will
operate normally and CUBE ICE can be obtained. (On operation of OFF function, only CRUSHED ICE
can be obtained.)
(4) If you want CUBE ICE from the ice left in the tray during OFF function operation, push the button to
select CUBE ICE, obtain the ice and then, operate OFF function again.
3. WATER DISPENSER function
1) This function is directly connected to city water and water can be obtained from WATER SOLENOID
VALVE by pushing WATER LEVER.
Since there is no function regulated by MICOM PCB, if there is any problem with water dispenser function,
check solenoid, connector, and water-supply state.
Notice
With DOOR of freezer open, ice cannot be obtained. This is to prevent from dropping ice into floor
when DOOR of freezer opens and ice LEVER is pushed. Contact point in DOOR S/W is used as
sensor for opening state of DOOR of freezer. Water dispenser is operated normally regardless of
opening of DOOR.
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