REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Model #s: 795.71602.010 795.71603.010 795.71604.010 795.71606.010 795.71609.010
P/No. MFL63293403
CONTENTS SAFETY PRECAUTIONS ........................ .................................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ................ .... 2 1. SPECIFICATIONS ........................ ..................................... ......................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... .................. ...... 3-4 2. PARTS IDENTIFICATION ........................ .................................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ...................... .......... 5 3. DISASSEMBLY ........................ ..................................... ......................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... .................... ........ 6-10 DOOR ............ ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ......................... ......................... ............... ... 6 DOOR ALIGNMENT ........... ........................ ......................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ .................... ........ 7 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER ............ ........................ ........................ ......................... ......................... ......................... .................. ..... 8-10 4. ADJUSTMENT ........... ....................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ......................... ....................... .......... 11-12 COMPRESSOR ........... ........................ ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ............ 11 PTC-STARTER.................................. PTC-STARTER...................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ................ .... 11 OLP (OVERLOAD PROTECTOR)....................... PROTECTOR)................................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ........................ ...........12 12 TO REMOVE THE COVER PTC ............. ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ......................... ........................ ...........12 12 5. CIRCUIT DIAGRAM ............ ......................... ......................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ .................. ...... 13 6. TROUBLESHOOTING ............ ......................... ......................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ .............. .. 14 ERROR CODE SUMMARY ........... ........................ ......................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... .................. ...... 14 7. PCB PICTURE ........... ....................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ......................... ....................... .......... 15-16 8. TROUBLESHOOTING WITH ERROR DISPLAY ............ ......................... ......................... ......................... ......................... ........................ ......................... ......................... ................. ..... 17-24 9. TROUBLESHOOTING WITHOUT ERROR DISPLAY ........... ........................ ......................... ......................... ......................... ........................ ......................... ......................... ............25-30 25-30 10. REFERENCE ........... ....................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ......................... ........................ ......................... ....................... .......... 31-34 11. COMPONENT TESTING INFORMATION ........... ........................ ......................... ........................ ......................... ......................... ........................ ......................... ......................... ............... ... 35-40 12. TROUBLESHOOTING ........... ....................... ......................... ......................... ......................... ......................... ........................ ......................... ......................... ........................ ......................... ..................... ........ 41-43 13. ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR ............. ......................... ......................... ......................... ........................ .............. .. 44-47
SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator. 1. Unplug the power power before handling handling any elctrical elctrical componets. componets. 2. Check the rated rated current, current, voltage, voltage, and capacity. capacity. 3. Take caution caution not to get water near any electrical electrical components. components. 4. Use exact exact replacemen replacementt parts. parts. 5. Remove any objects from the top prior to to tilting the product.
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1. SP SPEC ECIF IFIC ICA ATION TIONS S 1-1 DISCONNE DISCONNECT CT POWER POWER CORD CORD BEFORE BEFORE SERVICING IMPORTANT – RECONNECT ALL GROUNDING DEVICES
1-7 REPLAC REPLACEME EMENT NT PARTS PARTS 25cu,ft 795. 71602.010 795. 71603.010 795. 71604.010 795. 71606.010 795. 71609.010
All parts of this appliance capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original positions, and properly fastened.
Cover Relay.......................... Relay...................................... ......................... ...............3550C-0042C ..3550C-0042C Overload ........................ ..................................... ......................... .....................6750C-0004S .........6750C-0004S Defrost Thermostat ........................ .................................... ................6615JB2005H ....6615JB2005H Defrost Heater ........................ .................................... ........................ ............5300JK1005D 5300JK1005D Evaporator Fan Motor ........................ .................................... ............4681JB1027C 4681JB1027C Capacitor ........................ ..................................... ......................... ..................0CZZJB2014L ......0CZZJB2014L Compressor (Hi-Side) ....................... .................................... .............TCA34638901 TCA34638901 Evaporator (Lo-Side) ........................ .................................... ..............5421JJ1003B ..5421JJ1003B Condenser ......................... ..................................... ......................... ...............ACG72915203 ..ACG72915203 Dryer ........................ ..................................... ......................... ......................... ..............5851JA2007J .5851JA2007J Condenser Fan Motor ........................ .................................... ............4681JB1029D 4681JB1029D Temperature Control ........................ .................................... ..............6871JB1439D ..6871JB1439D Main Control ........................ .................................... ........................ ..............EBR67348005 ..EBR67348005
1-2 IMP IMPORT ORTANT ANT NOTICE NOTICE This information is intended for use by individuals, possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.
1-8 AIR FLOW / CIRCULA CIRCULATION TION D’AIR D’AIR
1-3 ELECTRICA ELECTRICAL L SPECIFIC SPECIFICATION ATIONS S Temperature Control (Freezer Compartment) Compartment) ...-6°F to +8°F Defrost Contro ....Total Comp Running Time Time : 7 hrs ~ 50 hrs Defrost Thermostat ........................ ..................................... ......................... ..................46°F ......46°F Electrical Rating : 115VAC, 60Hz......................... 60Hz..................................6.1 .........6.1 A Maximum Current Leakage ........................ ..................................... ................0.5 ...0.5 mA Maximum Ground Path Resistance .....................0.14 .....................0.14 Ohms Energy Consumption ......25 cu.ft. 476 kWh/yr (Energy Star)
EVAPORTOR FAN MOTOR
1-4 1-4 NO LOAD LOAD PER PERFO FORM RMAN ANCE CE CONTROL POSITION: MID/MID Ambient of ....................... .........................70°F ..70°F ....................... .................................... .............90°F 90°F Fresh Food, °F...................33°F °F...................33°F to 41°F ...........33°F to 41°F Frozen Food, °F.................-4°F °F.................-4°F to +4°F ............-4°F ............-4°F to +4°F Percent Running Time.......35%-45%................ Time.......35%-45%....................50°F-70°F ....50°F-70°F
1-5 REFRIG REFRIGERA ERATIO TION N SYSTEM SYSTEM Minimum Compressor Capacity Vacuum..................20 MIN. Minimum Equalized Pressure @ 70°F ......................... ..................................... ........................ ......................... .............52 52 PSIG @ 90°F ......................... ..................................... ........................ ......................... .............59 59 PSIG Refrigerant R134a......................... R134a...................................... ......................... ................4.23oz. ....4.23oz. Compressor.................................. Compressor...................... ......................... ........................ ...........754BTU/hr 754BTU/hr
1-6 1-6 INST INSTAL ALLA LATI TION ON Clearance must be provided at top, sides, and rear of the refrigerator for air circulation. AT REAR ........................ ..................................... ......................... ........................ ........................ ............2 2 in
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CONDENSER FAN M
25cu.ft ITEMS
SPECIFICATIONS
ITEMS
SPECIFICATIONS
DOOR DESIGN
Side Rounded
VEGETABLE TRAY
Opaque Drawer Type
DIMENSIONS(inches)
35 X 34 X 69 (WXDXH) 25cu.ft
COMPRESSOR
PTC Starting Type
NET WEIGHT(pounds)
324.18 (25cu.ft)
EVAPORATOR
Fin Tube Type
COOLING SYSTEM
Fan Cooling
CONDENSER
Spiral Condenser
TEMPERATURE CONTROL
Micom Control
REFRIGERANT
R-134a (120 g)
Full Automatic
LUBRICATING OIL
ISO10 (280 ml)
Heater Defrost
DEFROSTING DEVICE
SHEATH HEATER
DEFROSTING SYSTEM DOOR FINISH
PCM, VCM, Stainless
REFRIGERATOR
LED Module Module (27)
FREEZER
Bulb Lamp
LAMP HANDLE TYPE
Bar
INNER CASE
ABS Resin
INSULATION
Polyurethane Foam
1-9 DIMENSIONS
Description
795.7160
Depth w/ Handles
A
34 1/4 in.
Depth w/o Handles
B
31 3/4 in.
Depth w/o Door
C
27 7/8 in.
Depth (Total with Door Open)
D
46 1/2 in.
Height to Top of Case
E
68 3/8 in.
Height to Top of Door Hinge
F
69 3/4 in.
Width
G
35 3/4 in.
Width (door open 90 deg. w/o handle)
H
39 1/4 in.
Width (door open 90 deg. w/ handle)
I
44 1/4 in.
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2. PARTS IDENTIFICA IDENTIFI CATION TION
A N M
B
B
C
C
D
I J
E K F G L H
Use this page to become more familiar with the parts and features. Page references are included for your convenience. NOTE: This guide covers several different models. The refrigerator you have purchased may have some or all of the items listed below. The locations of the features shown below may not match your model.
A Refrigerator Light
I
Pullout Drawer
B Modular Door Bins (Cantilever door bins)
J
Durabase
C Fixed door bins
K Divider
D Refrigerator Shelves
L Tilt-Out Door Basket
E Humidity Controlled Crisper
M Dairy Bin
F Glide’N’Serve
N Digital Control Panel
G Automatic Icemaker H Ice Bin
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3. DISASSEMBL DISASSEM BLY Y 3-1 DOOR 1. 2. 3. 4. 5.
Refrigerator door Remove the the top hinge cover and disconnec disconnectt the wire harness. Remove the ground screw. Rotate the the lever hinge hinge and lift lift off hing hinge. e. Lift of offf the refrigera refrigerator tor door. door. Replace in the reverse order.
Gasket Bracket Clip
Door Frame Flat Tip Screwdriver
Gasket Bracket Figure 3 HINGE COVER 3. Remove Remove gasket gasket Pull gasket free from gasket channel on the three remaining sides of door. HINGE
Figure 1
Door gasket removal 1. Remove Remove door door frame frame cov cover er Starting at top of cover and working down, snap cover out and away from door.
Figure 4
Door gasket replacement 1. Insert Insert gasket gasket bracket bracket clips clips 1) Insert gasket bracket edge beneath door frame edge. 2) Turn upper gasket bracket spring so that both spring ends are in the door channel. 3) Push in clip until you hear it snap securely into place. place.
Frame Cover Handle
Figure 2
2. Remove Remove gasket gasket bracket bracket clips clips There are two clips on each door. Start bracket removal near one of the middle clips. 1)Pull gasket back to expose gasket bracket clip and door frame. 2)Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snaps out. 3)Continue prying back along seam until all clips snap out.
Gasket Bracket Clip Spring
Door Frame Correct
Incorrect
Figure 5 4) Push in remaining two two clips until you hear each snap securely into place. Note : Make sure that no part of gasket bracket edge protrudes from beneath door frame edge.
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2. Insert Insert gasket gasket into channel channel 1) Snap ga gasket sket assembly assembly into into the door bracket. bracket. Inserting the gasket assembly into the bracket door
3-2 DOOR DOOR ALIGNM ALIGNMENT ENT If the space between your doors is uneven, follow the instructions below to align the doors: 1. With one hand, hand, lift the door door you want to raise at middle middle hinge. 2. With other other hand, use pliers pliers to insert snap snap ring as shown. 3. Insert addition additional al snap rings until the doors doors are aligned. (Three snap rings are provided with the product.)
Correct
Incorrect
Figure 6 Figure 9 2) Press gasket gasket into channels channels on the three remaining sides of door.
Figure 7
3. Replace Replace door door frame frame cover cover Starting at top of cover and working down, snap the cover back into door.
Figure 8
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3-3 HOW TO REMOVE REMOVE AND REINSTA REINSTALL LL THE PULLOUT PULLOUT DRAWER DRAWER 3-3-1 FOLLOW STEPS TO REMOVE REMOVE Step 1) Open the freezer door.
Step 2) Remove the lower basket.
Step 3) Remove the the two screws screws from the guide guide rails rails (one from each side).
Step 4) Lift the the freezer door door up to unhook unhook it from the the rail support and remove. Pull both rails to full extension.
Step 5) First : Remove the the gear from the left left side first by releasing releasing the tab tab behind the gear, gear, place a screwdriver screwdriver between between the gear and the tab and pull up on the gear. Second : Remove the center rail. Third : Remove the gear from the right side by following the same steps for the left side.
NOTE : THIS TAB MUST BE PUSHED IN TO RELEASE THE GEAR.
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3-3-2 FOLLOW STEPS STEPS TO REINSTALL Step 1) Reinstall Reinstall the right right side gear gear into the the clip.
Step 2) Insert the the rail into into the right right side gear. gear. Gears do not need to be perpendicular to each other.
Step 3) Insert the the rail into the left left side gear, gear, and insert the gear into the clip.
Step 4) The rail system system will align align itself by pushing pushing the rails rails all the way into the freezer section. Pull the rails back out to full extension.
Step 5) Reinstall Reinstall the freezer freezer door by inserting inserting the rail tabs tabs into the guide rail.
Step 6) Reinstall Reinstall the two two screws into into the guide guide rails (one from each side).
Step 7) Reinstall Reinstall the lower lower basket, basket, and close the the freezer freezer door.
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3-3-3 PULL OUT DRAWER DRAWER To separate the drawer, push the front left left and right hooks in direction to to pull up and remove. Then gently lift the gear part of rear left and right side of the drawer and pull it out in direction.
To install, reposition the gear part of rear left and right side of the drawer after pulling out both rails as much as possible, and gently push down both left and right side while checking the hook on the front part.
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4. ADJUSTMENT 4-1 4-1 COMP COMPRE RESS SSOR OR
4-2-3 PTC-Applied Circuit Diagram
4-1-1 4-1-1 Role Role
Starting Method for the Motor
The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses this gas to high-temperature and high-pressure gas. It then delivers the gas to the condenser.
OVERLOAD PROTECTOR N
C PTC
4-1-2 Composition Composition
2
The compressor includes overload protection. The PTC starter and OLP (overload protector) are attached to the outside of the compressor. Since the compressor is manufactured to tolerances of 1 micron and is hermetically sealed in a dust and moisture-free environment, use extreme caution when performing repairs.
5 L1
S
COMPRESSOR MOTOR M M S
6 3 PTC STARTER
SEALED TERMINAL
Resistance Starter Capacitor Running
4-1-3 Note for for usage (1) Be careful not to to allow over-voltage and over-current. (2) If compressor is dropped or handled carelessly, poor operation and noise may result. (3) Use proper electric components appropriate to the Particular Compressor in your product. (4) Keep Compressor Compressor dry. If the Compressor gets wet (in the rain or a damp environment) and rust forms in the pin of the Hermetic Terminal, poor operation and contact may result. (5) When replacing the Compressor, be careful that dust, humidity, and soldering flux don°Øt c ontaminate the inside of the compressor. Dust, humidity, and solder flux contaminate the cylinder and may cause noise, improper operation or even cause it to lock up.
4-2 4-2 PTCPTC-ST STAR ARTE TER R 4-2-1 Composition of PTC-Starter (1) PTC (Positive Temperature Coefficient) is a no-contact semiconductor starting device which uses ceramic material consisting of BaTiO 3. (2) The higher the temperature is, the higher the the resistance value. These features are used as a starting device for the Motor.
4-2-2 Role of PTC-Starter PTC-Starter (1) The PTC is attached to the Sealed Sealed Compressor and is used for starting the Compressor Motor. (2) The compressor is a single-phase induction motor. The starting operation, the PTC allows current flow to both the start winding and main winding.
4-2-4 Motor Restarting and PTC Cooling Cooling (1) It requires approximately 5 minutes for the pressure to equalize before the compressor can restart. (2) The PTC device generates heat during operation. Therefore, it must be allowed to cool before the compressor can restart.
4-2-5 Relation of PTC-Starter and OLP (1) If the compressor attempts to restart before before the PTC device is cooled, the PTC device will allow current to flow only to the main winding. (2) The OLP will open because of the over current condition. This same process will continue (3 to 5 times) when the compressor attempts to restart until the PTC device has cooled. The correct OLP must be properly attached to prevent damage to the compressor. Parts may appear physically identical but could have different electrical ratings. Replace parts by part number and model number. Use only approved substitute parts.
4-2-6 Note for Using the PTC-Starter PTC-Starter (1) Be careful not to to allow over-voltage and over-current. (2) Do not drop or handle carelessly. carelessly. (3) Keep away from any liquid. liquid. If liquid such as oil or water enters the PTC, PTC materials may fail due to breakdown of their insulating capabilities. (4) If the exterior of the PTC is damaged, the resistance value may be altered. This can cause damage to the compressor and result in a no-start or hard-to-start condition. (5) Always use the PTC designed for the compressor compressor and make sure it is properly attached to the compressor. Parts may appear physically identical but could have different electrical ratings. Replace parts by part number and model number. Use only approved substitute parts.
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4-3 OLP (OVERLOAD (OVERLOAD PROTECTOR PROTECTOR))
4-4 TO REMOV REMOVE E THE COVE COVER R PTC
4-3-1 Definition Definition of OLP (1) OLP (OVERLOAD PROTECTOR) PROTECTOR) is attached to the compressor and protects the motor by opening the circuit to the motor if the temperature rises and activating the bimetal spring in the OLP. (2) When high current flows to the compressor motor, motor, the bimetal works by heating the heater inside the OLP, and the OLP protects the motor by cutting off the current flowing to the compressor motor.
4-3-2 Role of the the OLP (1) The OLP is attached to the Sealed Sealed Compressor used for the Refrigerator. It prevents the Motor Coil from being started in the Compressor. (2) For normal operation of the OLP, do not turn the Adjust Screw of the OLP in any way.
(1) Remove the Cover Cover Back M/C. (2) Disconnect two housing upper side of comp connected in. (3) Loosen two two screws on comp base.
(OVERLOAD PROTECTOR cross section)
12345678 330 FBYY Electrical characteristics part number
-S1 BOX98
Customer part number Lot code/ date code Physical termination part number
Part No.
Name
Base, phenolic (UL 94 V-0 rated) rated) Movable arm support, plated steel Stationary contact support, plated steel Heater support, plated steel Heater, resistance alloy Disc, thermostatic alloy Movable arm, spring temper copper alloy Contact, movable, silver on copper Contact, stationary, silver on copper Slug, plated steel Cover, polyester (UL 94 V -0 rated rated)) Pin connector, plated copper alloy (To engage 2.33/2.66 mm dia. pin)
(4) Use a L-shaped flap tool to pry off the cover. (5) Assembly in reverse order of disassembly.
Figure 18
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5. CIRCUIT DIAGRAM
- 13 -
6. TROUBLESHOOTING 6-1 Error Error Code Code Summar Summary y WARNING: When you check the Resistance values, be sure to turn off the power. And wait for the voltage-discharge sufficiently.
Error Display NO
Error Detection Category
1
Normality
2
Freezer Sensor Error
Er
FS
Short or Disconnection of Freezer Sensor
3
Refrigerator Sensor Error
Er
rS
Short or Disconnection of Refrigerator Sensor
4
Defrosting Sensor Error
Er
dS
Short or Disconnection of Defrosting Sensor
5
Icing Sensor Error
Er
IS
Short or Disconnection of Icing Sensor
dH
Even though it is passed 1 hour since then Defrosting, if Defrosting sensor is not over 8°C, it is caused
Temperature Fuse Disconnection, Heater disconnection, DRAIN Jam, Poor Relay for Heater
FF
It is caused when feedback signal isn’t over 65 seconds during BLDC FAN motor operating
Poor BLDC Motor connection, DRIVE IC, and TR Poor BLDC Motor connection, DRIVE IC, and TR Poor Communication connection,Poor TR of Transmitter and Receiver
Freezer Temperature
Ref. Temperature
Error Generation Factors N one
6
Poor Defrosting
7
Abnormality of BLDC FAN Motor for Freezer
8
Abnormality of BLDC FAN Motor for Mechanic Room
Er
CF
It is caused when feedback signal isn’t over 65 seconds during BLDC FAN motor operating
9
Communication Error
Er
CO
Communication Error between Micom of Main PWB and Display Micom
Er
Er
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Remark Normal operation of Display
Check each sensor and its connector.
7. PCB Picture 7-1 7-1 Ma Main in PCB PCB P/No & MFG
Picture
CON9 CON3 CON4 EBR67348005 (2010.03 ~)
CON2
CON5
CON8 CON1
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7-2 Displa Display y PCB & Sub Sub PCB P/No
Picture
CON01
Display PCB EBR42479305 (2010.03~)
- 16 -
8. Troubleshooting With Error Display 8-1 Freezer Freezer Se Sensor nsor Error (Er FS) No
Checking flow
1
Check for a loose connection.
2
Check the Blue/White to Blue/White.
Result & SVC Action
Result 0 Infinite ohms
SVC Action
Short
Change the sensor
Open
Replace the refrigerator
See resistance Normal table
Check the Temp and resistance (Table-1)
(1) To (2)
Result
-22°F / -30°C
40.5 ~ 38.5
-13°F / -25°C
30.5 ~ 28.5
-4°F / -20°C
23 ~ 21.5
5°F / -15°C
17.5 ~ 16.5
14°F / -10°C
13.5 ~ 12.5
23°F / -5°C
10.5 ~ 9.5
32°F / 0°C
8 ~7.5
The sensor is determined by the temperature. For For exam exampl ple, e, 23 23 indi indica cate tes s -4°F -4°F..
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8-2 Refrigerato Refrigeratorr Sensor Sensor Error Error (Er (Er rS) No
Checking flow
1
Check for a loose connection.
2
Check the White to White.
Result & SVC Action
Result 0 Infinite ohms
SVC Action
Short
Change the sensor
Open
Replace the refrigerator
See resistance Normal table
Check the Temp and resistance (Table-2)
(1) To (2)
Result
23°F / -5°C
38.5 ~ 36.5
32°F / 0°C
30.5 ~ 29.5
41°F / 5°C
24.5 ~ 23.5
50°F / 10°C
20 ~ 19
59°F / 15°C
16 ~15.5
The sensor is determined by the temperature. For For exam exampl ple, e, 30 30 indi indica cate tes s 32°F 32°F..
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8-3 Ici Icing ng Sensor Sensor Error Error (Er (Er IS) No
Checking flow
1
Check for a loose connection.
2
Check the Red to Bright Orange.
Result & SVC Action
Result Short
0
Infinite ohms
Open
See resistance Normal table
SVC Action Change the sensor Check the resistance of the blue wires (shown in number 2 to the left) If they are open between the Main PCB and the connector for the icemaker it will be necessary to replace the refrigerator. Check the Temp and resistance (Table-1)
(1) To (2)
Result
-22°F / -30°C
40.5 ~ 38.5
-13°F / -25°C
30.5 ~ 28.5
-4°F / -20°C
23 ~ 21.5
5°F / -15°C
17.5 ~ 16.5
14°F / -10°C
13.5 ~ 12.5
23°F / -5°C
10.5 ~ 9.5
32°F / 0°C
8 ~7.5
The sensor is determined by the temperature. For For exam exampl ple, e, 23 23 indi indica cate tes s -4°F -4°F..
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8-4 Defrost Defrost Senso Sensorr Error Error (F dS) No
Checking flow
1
Check for a loose connection.
2
Check the Orange to Orange.
Result & SVC Action
Result 0 Infinite ohms
Short
Change the sensor
Open
Replace the refrigerator
See resistance Normal table
Check the Brown to Brown.
SVC Action
Check the Temp and resistance (Table-3)
(1) To (2)
Result
23°F / -5°C
38.5 ~ 36.5
32°F / 0°C
30.5 ~ 29.5
41°F / 5°C
24.5 ~ 23.5
50°F / 10°C
20 ~ 19
59°F / 15°C
16 ~15.5
The sensor is determined by the temperature. For For exam exampl ple, e, 23 23 indi indica cate tes s -4°F -4°F..
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8-5 Defrost Defrost Heater Heater Error (Er dH) No 1
Checking flow
Result & SVC Action
Check the Door gasket. Part
2
Check the Defrost control part.
Result
SVC Action Go to the 3
0
Fuse-M
Change Fuse-M
Other Fuse M
Defrost Sensor
Defrost Sensor Defrost Heater 3
Input Test 3 Mode. (Push the button 3 times)
4
Check the Blue to Orange.
Go to the 3
34~42
Defrost Heater
Change Fuse-M
Other
Go to the 3
21 Infinite ohms
Go to the 5
Result
SVC Action
112 ~ 116 V
Go to the 5
0V
Replace Main PCB
Result
SVC Action
0V
Normal
112 ~ 116 V
Replace Main PCB
5
Release the test mode. Push the button 1 times. (Normal)
6
Check the Blue to Orange.
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8-6 Freezer Freezer Fan Fan Error Error (Er (Er FF) FF) No
Checking flow
Result & SVC Action
1
Reset the unit and Input Test 1 Mode. (Push the button 1 time)
2
Open the freezer door and Check the air flow. While an error code is displayed, the fan is not working.
3
Check the Fan motor.
4
Check the Fan motor voltage.
Status
SVC Action
No airflow
Go to 3
Airflow
Go to 4
Rotate fan using your hand. It feel stuck or locked up, change the motor. (Cause of ice or rust inside of motor)
(1) (1) (2) (2) (3) (3)
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Point
Result
SVC Action
(1) ~ (2)
Below 9 V
Change the PCB
(2) ~ (3)
0 or 5 V
Change the motor
8-7 Conden Condenser ser Fan Fan Error Error (Er CF) CF) No
Checking flow
1
Reset the unit and Input Test 1 Mode. (Push the button 1 time)
2
Check the fan rotating.
Result & SVC Action
While an error code is displayed, the fan is not working.
3
Check the Fan motor and surrounding.
4
Check the Fan motor voltage.
- 23 -
SVC Action
No airflow
Check motor
Airflow
Go to the 4
Rotate fan using your hand. It feel stuck or locked up, change the motor.
(1)(2) (1)(2) (3) (3)
Status
Result
SVC Action
(1) ~ (2)
Below 9 V
Change the PCB
(2) ~ (3)
0 or 5 V
Change the motor
8-8 Communicati Communication on Error Error (Er CO) No
Checking flow
Result & SVC Action
1
Check the loose connection.
2
Check the Orange to White/Black.
CON01 3
12 V
Go to the 3
Other
Check the Hinge (loose connection) Change the Main PCB
Result
SVC Action
0 V or 5 V
Change the Display PCB
Other
Go to the 4
Result
SVC Action
0 V or 5 V
Change the Main PCB
Other
Go to the 5
Result
SVC Action
0 V or 5 V
Change the Display PCB
Other
Go to the 6
Result
SVC Action
0 V or 5 V
Change the Main PCB
Other
Normal
Check the Orange to Brown.
Check the Orange to Red.
CON01 5
SVC Action
CON01
4
Result
Check the White/Red to Orange.
6
Check the White/Red to White/Black.
- 24 -
9. Troubleshooting Without Error Display 9-1 Freezer room AC Bulb Lamp doesn’t work No
Checking flow
1
Check the Freezer door switch.
2
Check the door S/W resistance.
Result & SVC Action If feel sticky, Change the door s/w.
Status Normal
3
Check the Yellow Blue to Sky blue.
Result 0
SVC Action Go to the 3
Infinity
Change door S/W
Push S/W
Infinity
Go to the 3
Status
Result
SVC Action
5V
Go to the 4
Other
Change the Door S/W
0V
Go to the 4
Other
Change the Door S/W
Result
SVC Action
0~2V
Normal
Other
Change the Main PCB
115 V
Change the F Lampe
Other
Change the PCB
Closed
Open
0
Change door S/W
4
Check Check the the Blue Blue to to Black. Black.
Status Closed
Open
- 25 -
9-2 Refrigerator room lamp doesn’t work No
Checking flow
1
Check tth he Refrigerator do door sw switch. ch.
2
Check the door S/W resistance.
Result & SVC Action If feel stick cky y, Chan hange tth he do door s/ s/w.
Status Normal
3
Check the Black to Gray White.
Result 0
SVC Action Go to the 3
Infinity
Change door S/W
Push S/W
Infinity
Go to the 3
Status
Result
SVC Action
12 V
Go to the 4
Other
Change the PCB
Result
SVC Action
12 V
Go to the 5
Other
Change the LED Lamp
Result
SVC Action
0~2V
Normal
Other
Change the Door S/W
12 V
Normal
Other
Change the LED Lamp
Normal
0
Change door S/W
4
Check the Red to Black.
Status Normal
5
Check the Black to White.
Status Closed
Open
- 26 -
9-3 Poor cooling in Fresh food section No 1
Checking flow
Result & SVC Action
Check the sensor resistance.
(1) To (2)
The sensor is determined by the temperature. For For exam exampl ple, e, 30 30 indi indica cate tes s 32°F 32°F..
2
Reset the unit and Input Test 1 Mode. (Push the button 1 time)
3
Open the fresh food door and Check the air flow.
4
Check the air temperature. Cold or not?
- 27 -
Result
23°F / -5°C
38.5 ~ 36.5
32°F / 0°C
30.5 ~ 29.5
41°F / 5°C
24.5 ~ 23.5
50°F / 10°C
20 ~ 19
59°F / 15°C
16 ~15.5
Status
SVC Action
Airflow
Go to the 4
No airflow
Check the R Fan motor Check the damper (Go to the 6)
Status
SVC Action
Cold
Normal
Not cold
Check the Compressor And sealed system
No 5
Checking flow
Result & SVC Action
Damper checking method. Inputting TEST Mode, Check the damper and PCB.
Test Mode
Damper State
1 Mode
Open
2 Mode
Closed
1,2 mode
Not working
Test Point (1) to (2) (3) (2)
6
7
(1) (3) to (4)
(4)
Check the Fan motor. Rotate fan using your hand. It feel stuck or locked up, change the motor. (Cause of ice or rust inside of motor)
Check the F Fan motor voltage. (1)(2) (1)(2) (3) (3)
- 28 -
SVC Action
Damper is normal.
Change the damper
Result 270 ~330 Other 270 ~330 Other
SVC Action Normal Change damper Normal Change damper
Point
Result
SVC Action
Motor
Stuck
Change the motor
Point
Result
SVC Action
(1) ~ (2)
Below 12 V
Change the PCB
(2) ~ (3)
0 or 5 V
Change the motor
9-3 Poor cooling in Freezer compratment No 1
Checking flow
Result & SVC Action
Check the sensor resistance.
(1) To (2)
The sensor is determined by the temperature. For For exam exampl ple, e, 23 23 indi indica cate tes s -4°F -4°F..
2
Reset the unit and Input Test 1 Mode. (Push the button 1 time)
3
Open the freezer door and Check the air flow.
4
Check the air temperature. Cold or not ?
- 29 -
Result
-22°F / -30°C
40.5 ~ 38.5
-13°F / -25°C
30.5 ~ 28.5
-4°F / -20°C
23 ~ 21.5
5°F / -15°C
17.5 ~ 16.5
14°F / -10°C
13.5 ~ 12.5
23°F / -5°C
10.5 ~ 9.5
32°F / 0°C
8 ~7.5
Status
SVC Action
Airflow
Go to the 4
No airflow
Check the F Fan motor
Status
SVC Action
Cold
Normal
Not cold
Check the Compressor And sealed system
9-4 Over cooling in Fresh food compartment No 1
Checking flow
Result & SVC Action
Check the sensor resistance.
(1) To (2)
The sensor is determined by the temperature. For For exam exampl ple, e, 30 30 indi indica cate tes s 32°F 32°F.. 2
Reset the unit and Input Test 1 Mode. (Push the button 1 time)
3
Open the refrigerator door and Check the air flow.
4
5
Input Test 2 Mode and Check the air flow. (Push the button 1 time)
Check the damper resistance.
23°F / -5°C
38.5 ~ 36.5
32°F / 0°C
30.5 ~ 29.5
41°F / 5°C
24.5 ~ 23.5
50°F / 10°C
20 ~ 19
59°F / 15°C
16 ~15.5
Status
SVC Action Action
Airflow
Go to the 4
No airflow
Check the R Fan Check the damper (Go to the 5)
Status
SVC Action
Airflow
Go to the 5
No airflow
Normal
Test Point (1) to (2)
(3)
(1)
(2)
(4)
(3) to (4)
- 30 -
Result
Result 270 ~330 Other 270 ~330 Other
SVC Action Normal Change damper Normal Change damper
10. Reference 10-1 TEST MODE and Removing TPA T PA
1. How to enter the TEST MODE If you push the test button on the Main PCB, the refrigerator will be enter the TEST MODE.
* 1 time : Comp / Damper / All FAN on (All things displayed)
* 2 times : Damper closed (22 22 displayed)
* 3 times : Forced defrost mode (33 33 displayed)
Main PWB
2. How to remove Terminal Position Assurance (TPA)
After measure the values, you should put in the TPA again.
- 31 -
10-2 TEMPERATURE CHART - FREEZER AND ICING SENSOR TEMP
RESISTANCE
VOLTAGE
-39°F (-40°C)
73.29
4.09 V
-30°F (-35°C)
53.63
3.84 V
-21°F (-30°C)
39.66
3.55 V
-13°F (-25°C)
29.62
3.23 V
-4°F (-20°C)
22.33
2.89 V
5°F (-15°C)
16.99
2.56 V
14°F (-10°C)
13.05
2.23 V
23°F (-5°C)
10.10
1.92 V
32°F (0°C)
7.88
1.63 V
41°F (5°C)
6.19
1.38 V
50°F (10°C)
4.91
1.16 V
59°F (15°C)
3.91
0.97 V
68°F (20°C)
3.14
0.81 V
77°F (25°C)
2.54
0.67 V
86°F (30°C)
2.07
0.56 V
95°F (35°C)
1.69
0.47 V
104°F (40°C)
1.39
0.39 V
- 32 -
10-3 TEMPERATURE CHART - REFRIGERATOR AND DEFROST SENSOR TEMP
RESISTANCE
VOLTAGE
-39°F (-40°C)
225.1
4.48 V
-30°F (-35°C)
169.8
4.33 V
-21°F (-30°C)
129.3
4.16 V
-13°F (-25°C)
99.30
3.95 V
-4°F (-20°C)
76.96
3.734 V
5°F (-15°C)
60.13
3.487 V
14°F (-10°C)
47.34
3.22 V
23°F (-5°C)
37.55
2.95 V
32°F (0°C)
30
2.67 V
41°F (5°C)
24.13
2.40 V
50°F (10°C)
19.53
2.14 V
59°F (15°C)
15.91
1.89 V
68°F (20°C)
13.03
1.64 V
77°F (25°C)
10.74
1.45 V
86°F (30°C)
8.89
1.27 V
95°F (35°C)
7.40
1.10 V
104°F (40°C)
6.20
0.96 V
- 33 -
10-4 How to check the Fan-Error (1) EBR673480 EBR673480 After sending a signal to the fan, the MICOM checks the BLDC fan motor s lock status. If there is no feedback signal from the BLDC fan, the fan motor stops for 10 seconds and then is powered again for 15 seconds. To determine that there is a fan motor malfunction, this process is repeated 3 times. If the fan motor is determined to be defective, the error code will be shown in the display for 30 minutes. At this point, the process will be repeated until the fan motor operates normally. If normal operation is achieved, the error display is erased and the MICOM is reset automatically.
No signal
Error Display
15s Normal drive
15s 10s
15s 10s
No signal
Repeat
20s Pause 30min
15s 10s
15s 10s
20s Pause 30min
- 34 -
10s
11. COMPONENT TESTING INFORMATION 11-1 Defrost Controller Assembly Function
- Controller Controller assembly assembly is consist consist of of 2 kinds of of part those those are fuse-m and sensor. sensor. we can can decide part is defect or not when we check the resistance. - Fuse-M can can cut off off the source source when when defrost defrost heater heater operate operate the unusual unusual high high tempe temperatur rature. e. - Sensor Sensor give give temper temperatu ature re inform informati ation on to Micom Micom
How to Measure (Fuse-M)
Measure the 2 pin connected to Fuse-M. If the ohmmeter indicate below 0.1ohm Fuse-M is good. If Fuse-M measures infinite ohms, it is open and needs to be replaced.
(1) to (2)
Measure the 2 pin connected to Sensor. If the the ohm ohmme mete terr ind indica icate te 11 (at (at rroom oom temperature) It is normal. Checking the resistance at other temperatures, check the sensor resistance chart.
How to Measure (Sensor)
(1) to (2)
Standard
Fuse-M (at all temperature) Test Point (1) to (2)
Ressult 0 ~ 0.1
Sensor (at room temperature) Test Point (1) to (2)
- 35 -
Ressult 11
11-2 Sheath Heater Function
Sheath heater is a part for defrost.
How to Measure
(1) (2)
Measure the 2 pin connected to Sheath Heater. If resistance is between 34 ~ 42 ohms, the heater is normal. If it measures infinite ohms the heater is open and needs to be replaced.
Standard
Sheath heater (at all temperature) Test Point (1) to (2)
Ressult 34 ~ 42
- 36 -
11-3 Door Heater Assembly Function
The heater is designed to prevent the exterior moisture on the door.
How to Measure 1 3
6
2
4
5
7
8 9
Standard
Test Point (1) to (2)
Ressult 2.3 ~ 2.9
- 37 -
11-4 Door Switch Function
Senses when the door is opened or closed by sending a signal to the Main PCB.
How to Measure
Button (Plunger)
1
2
3
3
4
1
4
2
Beep
Beep
Check the resistance between connectors 1, 2 and 3, 4.
Standard
Multimeter beep – Switch F,R Nomal 0
2
Push the button(Plunger) None (
- 38 -
3
1
4
11-5 Damper Function
The damper supplies the cold air from the freezer to the refrigerator section.
How to Measure
< Damper Circuit > 1
Blue
1 2
Blue
Red 3
3
White
Check the
3 Yellow
1 , 3
< extension >
Check the 2 , 4
Check the
1 , 3
Check the resistance between connectors 1,3 and 2,4.
Standard
Damper Test Points Red and Yellow
Result 373 ~ 456
- 39 -
Test Points Blue and White
Result 373 ~ 456
White
11-6 Light Bulb Socket Function
Make sure the light bulb is screwed in tight to the light socket.
How to Measure
(1)
(2)
(3)
(4)
Check the resistance between connector of housing and connector of lamp socket.
Standard
Test Points (1) to (2) and (3) to (4)
Result 0
- 40 -
12. TROUBLESHOOTING TROUBLESHOOTING 12-1 SERVICE DIAGNOSIS CHART COMPLAINT
POINTS TO BE CHECKED Is the power power cord unplugged unplugged from the outlet? outlet? Check ifif the power switch switch is is set to to OFF. Check if the fuse fuse of the power power switch switch is shorted. shorted. Measure Measure the voltag voltage e of th the e power power outlet. outlet.
REMEDY
No Cooling.
• • • •
Cools poorly.
• Check if the unit unit is placed placed too close close to the the wall. wall. • Check if the unit unit is placed placed too close close to the the stove, stove, gas cooker, or in direct sunlight. • Is the ambient ambient tempe temperature rature too high high or the room room door closed? • Check if food put put in the refrig refrigerator erator is is hot. • Did you open open the d door oor of the the unit too too often often or check if the door is sealed properly? • Check Check if the the Contro Controll is set to to Warm position. position.
• Place the unit unit abo about ut 4 inches inches (10 (10 cm) from from the wall. • Place the the unit away from from these heat sources. sources. • Lower the ambient ambient ttempera emperature. ture.
Food in the Refrigerator is frozen.
• Is foo food d placed placed in the the cooling cooling air air outlet? outlet? • Check Check if the the control control is is set to colder position. position. • Is the ambient ambient tempe temperature rature below 41°F(5° 41°F(5°C)? C)?
• Place foods foods in the the high-temp high-temperatur erature e section. section. (front part) • Set the contro controll to to Recommended position. position. • Set the contro controll to to Warm position. position.
Condensation or ice forms inside the unit.
• Is liqu liquid id food food sealed? sealed? • Check if food put put in the refrig refrigerator erator is is hot. • Did you open open the d door oor of the the unit too too often often or check if the door is sealed properly?
• Seal Seal liquid liquid foods foods with with wrap. wrap. • Put in foods after they have have cooled cooled down. down. • Don't open the the door too often often and and close it firmly.
Condensation forms in the Exterior Case.
• Check if the the ambient ambient temperature temperature and and humidity humidity of the surrounding air are high. • Is there there a gap in the door door gasket? gasket?
• Wipe moistur moisture e with a dry cloth. cloth. ItIt will disappear in low temperature and humidity. • Fill Fill up the the gap. gap.
There is abnormal noise.
• Is the unit unit positioned positioned in a firm and even place?
• Adjust the Leveling Leveling Screw, Screw, and and position position the refrigerator in a firm place. • Remove Remove the object objects. s.
• Are any unnecess unnecessary ary objects objects placed placed in the the back side of the unit? • Check if the Drip Drip Tray is not not firmly firmly fixed. fixed. • Check if the cover cover of the compres compressor sor enclosure enclosure in the lower front side is taken out. Door does not close well.
• Check if the door door gasket is is dirty with with an item item like juice. • Is the the refrig refrigera erator tor level level? ? • Is there there too much much food in in the refrigerat refrigerator? or?
Ice and foods smell unpleasant.
• Check ifif the inside of the the unit is dirty. dirty. • Are foods foods with with a strong strong odor odor unwrapped? unwrapped? • The unit unit smel smells ls of plast plastic. ic.
• • • •
Plug Plug in into to the the outl outlet. et. Set the switch switch to ON. ON. Repl Replac ace e the the fuse fuse.. If the the voltage voltage is low, low, correct correct the the wiring. wiring.
• Put in foods after they have have cooled cooled down. down. • Don't open the the door too often often and and close it firmly. • Set the contro controll to to Recommended position. position.
• Fix the Drip Drip Tray Tray firmly firmly in the origina originall position. position. • Place the cover cover in its its original original position. position. • Clean Clean the the door door gasket gasket.. • Position Position in a firm firm place place and level level the Levelin Leveling g Screw. • Make sure sure food food stored stored in shelves shelves does does not prevent the door from closing. • Clean Clean the the inside inside of the the unit. unit. • Wrap foods foods that that have have a strong odor. • New products products smell smell of plastic, plastic, but this this will go go away after 1-2 weeks.
Other possible problems: Check if frost forms in the freezer.
Not defrosting
Check Components of the defrosting circuit.
Check the refrigeration system.
The system is faulty.
Perform sealed system repair.
Check the Thermistor.
The operation of the Thermistor is incorrect.
Replace the Thermistor.
- 41 -
12-2 REFRIGERATION CYCLE Troubleshooting Chart STATE OF THE EVAPORATOR
PARTIAL LEAKAGE
Freezer compartment and Refrigerator don't cool normally.
Low flowing sound of Refrigerant is heard and frost forms in inlet only.
A little higher than ambient temperature.
• Refrig Refrigera erant nt level level is is low due due to a leak. • Normal Normal cool cooling ing is is possibl possible e by restoring the normal amount of refrigerant and repairing the leak.
COMPLETE LEAKAGE
Freezer compartment and Refrigerator don't cool normally.
Flowing sound of refrigerant is not heard and frost isn't formed.
Equal to ambient temperature.
• No dis disch charg argin ing g of Refrigerant. • Normal Normal coolin cooling g is possib possible le by restoring the normal amount of refrigerant and repairing the leak.
PARTIAL CLOG
Freezer compartment and Refrigerator don't cool normally.
Flowing sound of refrigerant is heard and frost forms in inlet only.
A little higher than ambient temperature.
• Normal Normal discha dischargi rging ng of the the refrigerant. • The capil capillar lary y tube is is faulty. faulty.
WHOLE CLOG
Freezer compartment and Refrigerator don't cool.
Flowing sound of refrigerant is not heard and frost isn't formed.
Equal to ambient temperature.
• Normal Normal discha dischargi rging ng of the the Refrigerant.
Cool Coolin ing g ope opera rati tion on stops periodically.
Flowing sound of refrigerant is not heard and frost melts.
Lower than ambient • Coolin Cooling g operatio operation n restarts restarts temperature. when heating the inlet of the capillary tube.
COMPRESSION
Freezer and Refrigerator don't cool.
Low flowing sound of refrigerant is heard and frost forms in inlet only.
A little higher than ambient temperature.
• Low pres pressure sure at high high side side of compressor due to low refrigerant level.
NO COMPRESSION
No compressing operation.
Equal to ambient temperature.
• No pres pressure sure in the the high high pressure part of the compressor.
CAUSE
L E A K A G E
C L O G G E D B Y D U S T
MOIS MOISTU TURE RE CLOG CLOG
C O D M E P F R E E C S T S I V I E O N
TEMPERATURE OF THE COMPRESSOR
STATE OF THE UNIT
Flowing sound of refrigerant is not heard and there is no frost.
REMARKS
12-2-1 Cleaning There is no need for routine condenser cleaning in normal Home operating environments. If the environment is particularly greasy or dusty, or there is significant pet traffic in the home, the condenser should be cleaned every 2 to 3 months to ensure maximum efficiency. If you need to clean the condenser: Remove the mechanical cover. Use a vacuum cleaner with a soft brush to clean the grille, the open areas behind the grille and the front surface area of the condenser. Replace the mechanical cover.
- 42 -
12-2-2 SEALED SYSTEM DIAGNOSIS “Not Cooling” Complaint All components operating, No airflow problems, Not frosted up as a defrost problem problem has been isolated to sealed system area
Frost Pattern?
Partial
None
Equalization Test
Equalization Test Very Fast
Very Slow
Very Slow
Very Fast
Fast Inefficient Compressor
Partial Restriction
Complete Restriction
Condenser Temperature
Cap Tube Sound Hotter than Normal
Faint
Room Temperature
None to Weak Air/Low Side Leak
Loss of Change Compressor Not Pumping
Trace of Oil Yes
No Leak
Undercharge (The equalization test is trying to restart a compressor using a start kit after it has been operating.)
- 43 -
13. ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 13-1 Working Principles 13-1-1 Ice Maker Working Principles
Power Input
Initial Control
Level Ice Maker Cube Mould for “Initial Control” after power is input.
Ice Making Control
Wait until the water in the cube mould is frozen after ice maker starts operation.
Ice Ejection Control
Check ice bucket is full of ice by rotating ice ejection motor in normal and reverse direction and eject ice into the ice bucket if ice bucket is not full.
Water Supply Control
Conduct “Ice Making Control” after supplying water into the ice maker cube mould by operating water valve.
Test Control
This is for refrigerator assembly line and service. When “ice making test switch” is pressed, it operates in the following steps: initial ice ejection water supply control steps.
1. Turning the Icemaker Icemaker stop switch off (O) stops the Icemaking Icemaking function. 2. Setting the Icemaker switch to OFF and then turning it back on will reset the the Icemaker control.
Power Switch
Automatic Shut off Arm
- 44 -
13-2 Function of Ice Maker 13-2-1 Initial Control Function 1. When power is initially applied or reapplied after power cut, it detects level of ice maker cube mould mould after completion of MICOM initialization. The detecting lever moves up and down. 2. The level of ice maker cube mould is judged by output output signal, high and low signal, of Hall IC. Make the cube mould to be horizontal by rotating ice ejection motor in normal or reverse direction. 3. If there is no change in signals one minute after the geared motor starts to operate, it stops icemaker operation and check the signal every hour. It resets initialization of icemaker when it becomes normal. 4. It judges that the initial control is completed when it judges the ice maker maker cube mould is horizontal. 5. Ice ejection conducts for 1 cycle irrespect of ice in the ice bucket when power is initially initially applied.
13-2-2 Water Supply Control Function 1. This is to supply water into the ice maker maker cube mould by operating water valve in the machine room when ice ejection control is completed and ice maker mould is even. 2. The quantity of water supplied is determined by DIP switch and time. DIP SWITCH SETTING S1
S2
WATER SUPPLY TIME
1
OFF
OFF
9 SEC
2
ON
OFF
8 SEC
3
OFF
ON
10 SEC
4
ON
ON
11 SEC
No
REMARKS * The quantit quantity y of water water supplied supplied depend depends s on DIP switch setting conditions and water pressure as it is a direct tap water connection type. (the water supplied is generally 60 cc to 100 cc) * DIP switch switch is on the main main PCB. PCB.
3. If water supply quantity setting is changed while power is on, water supplies for the amended time. time. If DIP switch is changed during water supply, water shall be supplied for the previous setting time. But it will supply for the amended time from the next supply. 4. When water supply signal is applied applied to water and ice valves at the same time during water supply, water shall shall be supplied to water valve. If water supply signal is applied to ice valve during water supply, water shall be supplied to both water and ice valves.
13-2-3 Ice Making Control Function 1. Ice making control is carried out from the completion of water supply to the completion of ice making in the cube mould. Ice making sensor detects the temperature of cube mould and completes ice making. (ice making sensor is fixed below ice maker cube mould) 2. Ice making control starts starts after completion of water supply control or initial control. 3. At first, It is judged that ice making is completed when ice making sensor temperature temperature reaches at -8°C after 70 minutes when water is supplied to ice maker cube mould. 4. Finally, It is judged that ice ice making is completed when ice maker sensor temperature reaches below -8 °C °C after 10 minutes in condition 3.
- 45 -
13-2-4 Ice Ejection Control Function 1. This is to eject ice from ice maker cube mould after ice making is completed. completed. 2. If Hall IC signal is on within 3.6 3.6 seconds after ice ejection motor rotates in normal direction, it does not proceed ice ejection but waits. If the ice bucket is full, ice ejection motor rotates in normal direction in every hour to check the condition of ice bucket. If the ice bucket is not full, the water supply control starts after completion of ice ejection control. If the ice bucket is full, ice ejection motor rotates in reverse direction and sops under ice making or waiting conditions. 3. If ice bucket is not full, ice ejection ejection starts. The cube mould tilts to the maximum and ice is separated from the the mould and ice checking lever raises. 4. Ice ejection motor stops for 1 second if Hall IC signal changes from OFF (low) to ON (high) after after 3.6 seconds when ice ejection motor rotates in normal direction. If there is no change in Hall IC signals within 1 minute after ice ejection motor operates, ice ejection motor stops as ice ejection motor or hall IC is out of order. 5. If ice ejection motor or Hall IC is abnormal, ice ejection motor rotates in normal direction to exercise initial operation. It resets the ice maker if ice ejection motor or Hall IC is normal. 6. The mould stops stops for 1 second at maximum maximum tilted condition conditions. s. 7. The mould returns to horizontal conditions as ice ejection motor rotates in reverse direction. 8. When the mould mould becomes horizontal, the cycle starts to repeat: Water Supply Ice Making Ice Ejection Mould Returns to Horizontal 9. When freezer door is open, ice ejection don’t operating, and after 1minute of Freezer door closing, ejection control function is operated.
Maximum tilting point Ice bucket is not full HALL IC OUTPUT SIGNALS Ice bucket is not full HALL IC OUTPUT SIGNALS
ICE CHECKING LEVEL 30
°
ICE CHECKING AXIS Lock
Ice making (Original point)
Ice Checking
Ice Ejection
Lock
2±1 sec
Horizontal Conditions
9±3 sec 8±3 sec
- 46 -
Level Retrun Conditions
13-2-5 Test Function 1. It is to force the operation during operation test, service, and cleaning. The test switch is mounted under the automatic ice maker. The test function starts when the test switch is is pressed for more than 0.5 second. 2. Test button does not work during ice ejection and water water supply. It works when it is in the horizontal conditions. If mould is full of ice during test function operation, ice ejection control and water supply control do not work. 3. When test switch is pressed for more than 0.5 second in the horizontal conditions, ice ejection starts irrespect of the mould conditions. Water shall be splashed if test switch is pressed before the water in the mould freezes. Water shall be supplied while the mould returns to the horizontal conditions after ice ejection. Therefore the problems of ice ejection, returning to the horizontal conditions, and water supply can be checked by test switch. When test function performs normally, buzzer sounds and water supply shall carry out. Check it for repair if buzzer does not sound. 4. When water supply is completed, the cycle operates normally as follows: Ice making Ice ejection Returning to horizontal conditions Water supply 5. Remove ice from the ice maker cube mould and press test switch when ice maker cube mould is full of ice as ice ejection and water supply control do not work when cube mould is full of ice.
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600A
600B
616E
623A 623B 627B
619A
CASE PARTS
CASE PARTS
FREEZER PARTS CAUTION: Use the part number to order the part, not the position number. 250C
145C
250D
250E
136B
145G
250D 250C
145J
131A
145K
145F
237C
145M 145J
145H
136A
REFRIGERATOR PARTS CAUTION: Use the part number to order the part, not the position number.
141A
141B
141A
141B
141C
141A
141B 141C
141A
141C
141B
141D
161C
141C 161B
154A
151A
151B 146E
161A
145E
162B 145D
162A
REFRIGERATOR PARTS
DOOR PARTS
DOOR PARTS CAUTION: Use the part number to order the part, not the position number.
230B
230A 241A
231B
233B
233C 234D
233D 241C
233A
234B
231A
234C
241B 234A
212G
241D
241D B05
B05 241D 244A
244A
241D 241E
241D 241E
243C 243C
243A 243A
243B
243B B05
S25
B05
249E
262C
S25
249G
250B
205C
249J
250A
200A
205A
203A
201A B06
205B
250B
B06 212D
250H
249H
249F
249K
262C
