Samsung Tech Talk - P.C. Richard & Son

Volume 7, Issue 10
Home Appliances Newsletter
October, 2012
Samsung Electronics America
Samsung Tech Talk
Your source for service information
Cool Info About Refrigerator Temperature
Sensors
Inside this issue:
Cool Info About
Refrigerator Temperature Sensors
1
Get Certified on
Samsung Icemakers!
2
3
Freezer Frost in
French Door Refrigerators
Testing Samsung
Refrigerator Fans
6
T-Shooting Wi-Fi
Refrigerator Connectivity Issues
7
GSPN Updates
9
RTC Home Appliance Training
10
Juan Morales
Regional Technical Trainer

A thermistor is a type of resistor whose resistance varies with temperature.

Samsung refrigerator temperature sensors are NTC (Negative Temperature Coefficient)
type thermistors.

Samsung refrigerator temperature sensors exhibit a
decrease in electrical resistance with increasing
temperature.

Depending on the temperature the
sensor is exposed to, it will communicate to the Main PCB that the compartment is either cool or warm.

If the compartment warms up, the resistance of the sensor will decrease, along
with the voltage across it.

This decrease in voltage will communicate to
the Main PCB that cooling is required.

Depending on how warm the compartment is, the fans, the compressor,
or both will be activated to cool it down.

Samsung refrigerators use this process to accurately maintain temperature within the
compartments.

If a sensor fails (open/short), or simply deviates from its tolerance, the temperature in
the compartment will not be maintained properly.
Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
Get Certified on Samsung Icemakers!
A new Samsung Icemaker Certification Course has been uploaded to Plus One.
Covering pre-2012 models, this course gives you the knowledge you need to diagnose problems with Samsung Ice Makers correctly and reduce REDO.
Topics covered include:

The temperatures required for a refrigerator’s ice making system to work properly

The water pressure needed

Voltage and resistance checks for both styles of Samsung Ice Makers (Flex Tray and Heated Mold)

Normal ice maker operation

Expected ice production

The external factors that can affect ice making
To obtain certification:
1. View the course.
2. Take the Exam.
a. A passing score of 70% gets you certified
What to do next:
Log into Plus One and start today.
2
1
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Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
Freezer Frost in French Door Refrigerators
Wes Sirois
Assistant Manager, HA Product Support
Models:
RF197AB
RF266AZ
RF26VAD
RFG296HD
RF197AC
RF267AA
RF26XAE
RFG297AA
RF217AB
RF267AB
RF26XAZ
RFG297AB
RF217AC
RF267AC
RF4267HA
RFG297HD
RF263AE
RF267AD
RF4287AA
RFG298AA
RF265AA
RF267AE
RF4287HA
RFG298HD
RF265AB
RF267AF
RF4289HA
RFG299AA
RF265AD
RF267AZ
RFG237AA
RFG299AB
RF266AA
RF268AB
RFG238AA
RFG29PHD
RF266AB
RF268AC
RFG293HA
RFG29THD
RF266AC
RF26VAB
RFG295AA
RF266AE
RF26VAC
RFG295AB
Problem: Frost in freezer. Freezer door not closing.
Symptoms:

Frost on food in freezer

Frost on freezer rails

Gap around freezer gasket
Cause #1:

Pin in the freezer rail is out of position.

This can happen during cleaning.

If the pin is out of position, the auto-close spring will not work and the drawer will not close completely.
Freezer Rail
Solution #1:

Open the drawer fully and push it closed. The pin should return to the correct position.

If the pin does not return to the correct position, pull it into position. Demonstrate this to the customer.
Pin in wrong position
Page 3
Pin in correct position
Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
Freezer Frost in French Door Refrigerators
continued
Cause #2:

Improper alignment of the freezer drawer baskets and/or Pizza Guard. The drawer will not close flush.
Solution #2:

Make sure the freezer baskets and Pizza Guard are positioned correctly.
Lower basket, tab out of position
Page 4
Basket installed correctly
Upper basket roller past the stop
Upper basket installed correctly
Pizza guard stud out of place
Pizza Guard installed correctly
Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
Freezer Frost in French Door Refrigerators
continued
Cause #3:

Improper loading of the freezer by the customer, causing the drawer to remain partially open.
Solution #3:

Remove obstructions, clean off any frost, and then close the drawer.

Advise the customer about proper loading. This is not a warranty issue.
A bottle caught between the Pizza Guard and top basket
Gap between gasket and cabinet

All new production will include a label advising the customer on proper loading techniques.

The label will also inform the customer that he/she may have to pay for service if the cause of the problem is improper loading.
Other causes:

The Timing Rod may be out of alignment. The timing rod is the bar located between the left and right side tracks
(behind the lower basket). A gear is located at each end of the rod. These gears must be aligned so that the slide
rails will open and close properly. To align the gears, open the drawer fully and close it forcefully. This should align
the gears.

The customer may be opening the drawer from the left or right end of the handle. Depending on the amount of food
in the freezer, the drawer could rack and not seal completely. Advise the customer to open and close the drawer
using the middle of the handle for best performance.
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Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
Testing Samsung Refrigerator Fans
Nicholas Webert
Regional Technical Trainer
Last year, we taught techs how easy it was to test the dc voltage fans in Samsung refrigerators. Knowing that Samsung
uses 3 lines for each fan can make testing even easier. Neutral (pin1 or circuit ground) and voltage (pin 3 or voltage) are
supplied to make the fan turn. While the fan spins, it creates a low 2 – 2.5 dc voltage (FG) that is sent back to the board.
If the board does not receive this FG voltage, it stops supplying power to turn the fan.
Once you understand how the fan operates, you can take it one step further. If you supply your own power to pins 3 and
1 by connecting a 9 volt battery to them, you can make the fan turn. Then, by checking for the FG voltage returning to
the board, you can confirm the fan is good without even viewing it.
You can also do the same test without using a battery. Simply put a jumper wire between a currently turning fan and the
fan you’re testing. For example, with the C Fan turning, jump pin 5 to pin 3, and then check for FG power to confirm.
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Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
T-shooting Wi-Fi Refrigerator Connectivity Issues
Steve Polzin
HA Technical Specialist
Samsung Wi-Fi refrigerators provide easy access to a series of user friendly, web based applications. Consumers can
check the weather, leave notes for their kids and keep the family on schedule with the Google calendar. Other useful
applications allow quick, easy access to favorite recipes, pictures, music and yes, they also give customers the ability to
Tweet from their refrigerator.
From time to time, you are likely to run across
connectivity issues in which the customer cannot access the web or perhaps cannot maintain a connection and has to regularly reset the
control to restore the connection. In this article,
we will focus on Internet access, how to evaluate connection issues, and what you need to
know to educate the consumer and prevent
repeat service requests.
To begin troubleshooting, click the Settings
icon located in the bottom right hand corner of
the main menu. Then, scroll down and make
sure Wi-Fi is turned on, and then select the
customer’s Wi-Fi network. If the network is not
listed, it indicates that either the Wi-Fi network is hidden or there is a signal problem with the home Wi-Fi network.
An easy way to confirm Internet access is to
launch the Weather Bug or AP News App from
the main menu. If connection was unsuccessful,
check the signal strength icon in the Wi-Fi Network window. If the signal strength is low, the
problem is with the home Network, not the refrigerator. A more thorough way to check the
Network connection is by clicking the IP Address icon located in the Wi-Fi Network window,
and then pressing the test button in the bottom
right hand corner. If the automatic settings are
correct, a message will appear indicating that
the configuration is correct. A key factor to keep
in mind is that if a network appears in the Wi-Fi
network window, the refrigerator has established communication with that network and the connection issue is not likely to be the caused by the refrigerator.
We strongly recommend you work through the process as described above because the next step is to explain to the
customer that the issue is not with the refrigerator and lies within their home Wi-Fi network. Inevitably, some customers
rightfully will be quick to point out that other wireless devices work in the house and they have never experienced any
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Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
T-shooting Wi-Fi Refrigerator Connectivity Issues
continued
problems before. That being said, a possible solution might be available if you or the customer has a smart phone with a
hot spot. You should be able to connect through that device as further proof the refrigerator is working properly.
A basic understanding of a home Wi-Fi network can go a long way when it comes to educating the customer and bringing a successful resolution to a connectivity issue. One of the biggest obstacles to setting up a home Wi-Fi network is the
lack of signal strength in some areas throughout the
house, commonly referred to as dead zones. Wi-Fi
signals are transmitted over radio waves, and are
subject to the same reception problems found with
radio and television signals. Dead zones can be
caused by a multitude of factors such as walls, distance between the device and the router, and even
interference from appliances, cordless phones, and
other Wi-Fi routers in the area. The Samsung refrigerator Wi-Fi feature is located in the dispenser door
panel which is surrounded by metal and foam insulation, creating another obstacle to a reliable connection. Once you have determined that a connection
cannot be made or maintained because of a low or
absent signal, how do you approach the customer? It is “not” your responsibility to correct the problem. However, we
recommend that you provide a thorough explanation of why the connection issue is with the home Wi-Fi network and not
the refrigerator.
Samsung does not endorse nor recommend any device or method to extend or strengthen a Wi-Fi signal, however, there
are options available that do just that. We do recommend the customer contact their Internet service provider or a local
retailer that specializes in computers and/or Wi-Fi to get a qualified recommendation. The customer should inquire about
a Wi-Fi range extender. The range extender grabs a network connection wirelessly from an existing router and extends
and strengthens the signal. It is a simple, affordable option for low signal dead zone issues.
Please Send Us Your Comments!
Something you’d like to see in the Samsung Tech Talk Newsletter? If there a topic/issue we haven’t covered that you’d
like us to write about, LET US KNOW!
Please send your comments to:
training@sea.samsung.com
Page 8
Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
GSPN Updates
Jeff Brutman
Senior Staff, Publications
We encourage you to use our GSPN site to find the latest service bulletins to aid you with your repairs:
http://gspn3.samsungcsportal.com/
HA Service Bulletins uploaded to GSPN in September, 2012:
Bulletin Number
Subject
Applicable Models
ASC20120905001
The Auto Pullout Feature for the Upper
Freezer Drawer does not work correctly.
The stops on the lower drawer are missing, so the upper tray will not roll out automatically
RF260BEAEBC/AA, RF260BEAESP/AA
RF260BEAESR/AA, RF260BEAEWW/AA
RF261BEAEBC/AA ,RF261BEAESP/AA
RF261BEAESR/AA, RF261BEAEWW/AA
RF263BEAEBC/AA, RF263BEAESP/AA
RF263BEAESR/AA, RF263BEAEWW/AA
RF263TEAEBC/AA, RF263TEAESP/AA
RF263TEAESR/AA, RF263TEAEWW/AA
ASC20120907001
ASSY-PARTITION SWITCH Partition
Switch improvement – New Part Number
FE-710DRS
Microwave Oven Cavity Touchup Paint
ASC20120328002
All Models
Service Bulletin has been updated.
To access service bulletins on GSPN, first visit http://gspn3.samsungcsportal.com/ Login using your User ID and Password. Click on “Knowledge” at the top, then “Product Info” in the left column. The Product Information menu will appear.
Click on “Service Bulletin (Local) to bring up the Service Bulletins (Local) screen. To search for a bulletin, enter the bulletin number in the Subject field on the left side of the screen, and then click the Search button on the far right. If for some
reason the bulletin does not appear, it can still be searched using the “Category” drop-down menus, the Subject field, or
the Model field. You can also try using the Search field at the top of the screen.
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Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
2012 RTC
Home Appliance
Training
Samsung HA Training 2012
For 2012, Samsung introduces a new way of training. To help you with your
demanding schedule, updated training on new 2012 products will be two days
long. To be eligible to attend the two day training session, techs must have
attended and successfully completed 2011 HA product training in one of our
training centers.
Samsung will still hold 3 day Basic classes quarterly. These classes are intended for new techs who have never attended a Samsung training, or for
techs who need extra help to improve their skills.
Attend the in-depth, hands-on 2 day Update or 3 day Basic training at one of
our RTCs!
You can reserve your seat in training by emailing training@sea.samsung.com.
Additionally, Home Appliance training is available on-demand 24/7 at https://my.plus1solutions.net/clientPortals/
samsung/
Training Schedule
Date
October 2-3, 2012
City
Houston, TX
ME/ASC 2012 2 day Update Training
October 9-11
Little Ferry, NJ
ME/ASC 2012 3 day Basic Training
October 16-17, 2012
Dallas, TX
ME/ASC 2012 2 day Update Training
October 16-18, 2012
Bensenville, IL
ME/ASC 2012 3 day Basic Training
November 6-7, 2012
Little Ferry, NJ
ME/ASC 2012 2 day Update Training (Session 1)
November 8-9, 2012
Little Ferry, NJ
ME/ASC 2012 2 day Update Training (Session 2)
Page 10
Comments
Volume 7, Issue 10
Home Appliances Newsletter
Samsung Tech Talk
2012 RTC Home Appliance Training
continued
Date
City
Comments
November 13-14, 2012
Bensenville, IL
ME/ASC 2012 2 day Update Training (Session 1)
November 15-16, 2012
Bensenville, IL
ME/ASC 2012 2 day Update Training (Session 2)
Samsung Electronics America
85 Challenger Road
Ridgefield Park, NJ 07660
Phone: 201-229-4251
The information in this bulletin is published for experienced repair technicians
only and is not intended for use by the public. It does not contain warnings to
advise non-technical individuals of possible dangers in attempting to service a
product. Only experienced professional technicians should repair products
powered by electricity. Any attempt to service or repair the product or products
dealt with in this information by anyone else could result in serious injury or
death. Information provided in this bulletin is subject to change or update without notice.
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