Samsung refrigerator display DIY repair

In detail: the display of the samsung refrigerator do-it-yourself repair from a real master for the site my.housecope.com.

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DSMAX, bring the topic name into line with the design requirement.

but in general the theme is super, the indication costs three kopecks, and considerable efforts were spent on its restoration ..

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The South Korean brand Samsung has become famous for the production of high-quality and durable refrigeration units. This manufacturer was one of the first to introduce No Frost technology into its models, making them even more attractive to the consumer. But this technique also has a certain resource - usually after seven years of uninterrupted operation, various breakdowns occur. Most often this happens due to the refusal of periodic maintenance of equipment. The list of the most common malfunctions in Samsung Nou Frost two-compartment refrigerators is mainly associated with various problems in the cooling system.

The following malfunctions in the temperature regime of the Samsung Nou Frost two-compartment refrigerator can be distinguished:

the formation of an ice crust (incorrectly set temperature), which increases electricity consumption;
a full pan of water (due to leakage, food will quickly deteriorate).

A distinctive feature of Samsung refrigerators is constant temperature each of the cameras (the difference will be within 0.3 degrees). Different modes are set in different parts of the device - they differ significantly and decrease from top to bottom.

In the main chamber, the temperature indicator corresponds to three degrees of heat, a change within plus or minus two degrees is allowed.
Now let's move on to the freezer - here the temperature is already "reigning" within 18 degrees below zero. To adjust (and adjustment is allowed), you need to study the instructions attached to the model.

Video (click to play).

The user can independently regulate the temperature from the control panel - the information on it is provided by the sensors located inside the device. They are the ones who monitor the territory allocated to them in the unit. The sensors have the following parts of the device:

common refrigerating chamber;
inner space in the evaporator;
freezer chamber;
control panel (for measuring the environment).

Installation required temperature by using the Cooling Power or Fridge keys (or mechanical rotary knob). On the control panel itself and visible to the user, the data from the sensors are sent through the control circuit. In most cases, models from this brand have 502AT controllers, which are universal.

Failure of any of the device's sensors leads to malfunction of the entire Samsung refrigerator. It is best to entrust such repairs to the appropriate specialists.

Refrigerator wiring diagram

The control panel will definitely show that there has been a malfunction in the device: the corresponding indicator will flash. However, the problem can be caused by one of the following reasons.

The temperature rise is more than 3 degrees. This often happens due to constantly open door in hot weather. The problem is solved simply: the refrigerator should be tightly closed and not opened for about 2-3 hours.
The temperature mode was not set - this defect can be eliminated, guided by the instructions.
There is a separate indicator in the ice tray.It can signal that the part is installed incorrectly - this point should be checked and the misunderstanding should be eliminated.
Sometimes, when rearranging doors, a malfunction occurs in electronic panel contacts... In this case, it is better to double check the connections.

How to solve the problem with setting the temperature in the units from this manufacturer? The instructions for each model contain detailed information on how to do this correctly.

Temperature setting

A defective Samsung refrigerator can work without externally giving out anything "amiss". However, over time, the problem will only get worse. This is why the user should pay attention to any signals that are signs of more serious problems ahead. Let's consider the most common ones. At the first place - defective relay in evaporator.

The main symptom is the constantly growing frost in this part of the unit. As a result of such a breakdown, the evaporator will be covered with a layer of snow in just 2-3 days. The end result is that the unit simply stops freezing due to the increased temperature in the chambers. This is not surprising, since the compressor is no longer turned off by the thermostat.

Frost on the back of the refrigerator

What can you do yourself in this case? The unit must be shown to specialists. But before that, you will need to do the following.

The refrigerator is disconnected from the network.
The device is released from its content (products). You will also need to remove all the drawers and shelves.
Next, open the door wide in the refrigerator and defrost all devices in 8-10 hours.

The recommendation from the service center, most likely, will be to replace the control board.

In addition, it often breaks refrigerator timer. Interestingly, here all the symptoms are similar to the above case. Therefore, again, it is recommended to call a specialist, before repeating the actions similar to the case with the thermal relay.

Malfunctions in refrigerators with two compartments can be different. Aggregates are considered particularly vulnerable electrically operated (almost all of the modern models). The list of problems turns out to be typical:

the appearance of increased knocking, noise interference or rattling;
poor performance of the refrigerating chamber (with excellent freezing performance);
the opposite of the above result;
accumulation of water in the refrigerator;
delay in starting the motor from the compressor;
compressor operation without shutdown;
malfunction of the electrical panel.

All these breakdowns most often come from complex electronic components and system parts (evaporator, thermostat, board parts), which means that their diagnostics and troubleshooting should be done so much at the appropriate professional level. There are also "diseases" to which the two-chamber models of "Samsung" are most often susceptible. Mechanical damage devices lead to the following result:

open circuit in the electric circuit of the heating element for defrosting;
leakage of liquid from the freon circuit.

Sometimes the user is also to blame, who, as a result of improper operation, has created problems with clogging of the capillary line or filter of the dryer.

Of others, already rare breakdowns you can note:

breakage of the compressor winding (the motor jams and stops rotating);
fan defects in the evaporator blowing (the unit stops making noise, and the temperature rises in the chambers).

The user is not recommended to independently try to deal with the indicated breakdowns, especially if he does not know most of the indicated terms. Such self-activity can deprive the user of the warranty service from the manufacturer.

However, there is something that can be eliminated with your own hands - this is adjusting the doors and hinges from them, re-hanging the doors, replacing the power cord, cleaning the drain from blockages, replacing automation units. Here it is allowed to make self-repair (if the user is confident in his abilities).When it comes to replacing defective parts, then only a qualified specialist from an authorized service center will be able to offer original options.

Compliance with simple recommendations will allow refrigerators with the "Know Frost" system to serve for a long time and trouble-free.

Do not defrost such units manually: here it is allowed to auto defrost once a year to wash and clean the device and its parts.
Branch drip type defrost in only one chamber.
If you need to clean the unit while it is on, it is best to do it in cold weather, otherwise the overheated refrigerator will break.
The device should be washed without the use of abrasive chemicals - a solution of soda and water is enough. After the procedure, the surface is wiped off with a clean damp cloth. Any stains that appear should be removed immediately.
The back surface should also be cleaned of dust and dirt - they can stick into other parts and assemblies of the device.
Products are stored in packages and bags.
Can't use the machine outdoors and keep it away from running water (eg rain).
The refrigerator should be kept away from direct sunlight and heat sources.

Two-compartment refrigerators Samsung with the "Know Frost" system are one of the most popular models among consumers. Reliable, economical and quiet models have gained popularity due to their ability to independently set the required temperature. Good care and timely maintenance of Samsung two-compartment refrigerators will extend the service life of the devices and prevent malfunctions and breakdowns.

Korean Samsung refrigerators are characterized by high quality components and the use of new technologies. The electronic unit with push-button and touch control is responsive to commands. Compressors are energy efficient and reliable. Malfunctions in the Samsung refrigerator are possible, but the reason is a gross violation of operating conditions.

Samsung refrigerators attract customers with their design and reliability. In the absence of preventive maintenance after 6-7 years of continuous operation, individual units become unusable. The most vulnerable are the Nou Frost cooling system and electronics.

Notice a crust of ice in a two-compartment refrigerator with Know Frost? The temperature may be set incorrectly. Ice can build up in the chamber if the drain hole is clogged or if there is a blockage in the condensate pipe. These reasons are obvious, malfunctions of the Samsung refrigerator can be eliminated by yourself. Alert should be strong freezing and high temperature in the chamber, which has arisen suddenly.

Universal sensors monitor the temperature in the evaporator, in the room and in the chambers, the information is displayed. The mode can be changed with the rotary knob or with the Cooling Power, Fridge keys. The list of the main malfunctions of the Samsung refrigerator is displayed as an error code. Explanation of problems in the instruction manual.

Experts consider that a peculiarity of Samsung refrigerators is their tolerance. For a long time, a notification of a malfunction will be received, but the refrigerator will work without eliminating them. Among these reasons for breakdowns:

constantly growing frost on the evaporator - the temperature sensor or the defrost timer in the No Frost system is faulty;
incorrect temperature conditions in the chambers, there is no response to a new task;
non-stop or very short compressor operation;
extraneous noise, knocking in the engine.

In the Samsung refrigerator on electronic control, it is up to a master to find faults and ways to fix them. The client's task is to disconnect the machine from the network, remove food and defrost it. Each series of devices has features known to the service department.

Apparatus with bottom freezer and one compressor.Energy efficiency class A, electronic control, Know Frost in two chambers. Air is cooled in the freezer compartment, then it enters the plus compartment through the flap.

Typical malfunctions of the Samsung model RL33EAMS are often referred to as an electronic control system. The self-diagnostic system detects the following faults displayed on the display:

r5 (.0 ...) - faulty, open or short circuit of the refrigerating chamber sensor;
d5 (… .0) - open or short circuit detected in the temperature sensor circuit in the evaporation chamber;
F5 (..0 ..) - breakdown, open line, short circuit of the temperature sensor of the freezer;
E5 (… 0.) - malfunction of the room temperature sensor;
rd - the air damper does not work or does not work correctly;
dd - drive and power problems.

Experts believe that the most difficult malfunction is the improper operation of the air damper. Up to 80% of failures occur for this reason.

A feature of the Samsung RL33EAMS1 / BWT refrigerator is a malfunction in the defrost of the evaporator. If the process continues for a long time, due to the failure of the sensor, the display will show the readings at the moment when the command to turn on the heating element is given. That is, food is already deteriorating in the chambers, and the display will show +5 and -18 degrees. In this case, if the heating element is working, you need to change the temperature sensor of the evaporator.

Samsung refrigerator of the same series, but on the RL33SBSW electromechanical control, often gives an rd error when diagnosing. Malfunctions associated with improper operation of the air damper. Through it, cold air from the freezer compartment enters the plus chamber. To fix the problem, you need to adjust the knot so that the plate rotates freely.

In connection with some features of the heater in the Know Frost system and the cyclical defrost, we will explain in detail why it is necessary to control this mode. As programmed, when a certain layer of frost builds up on the radiator, a sensor attached to the pipe transmits the reading to the brain. There follows a command to turn on the heating element. Now, until a new signal is received from the sensor, the compressor will not turn on.

If the heating element does not work, defrost will take hours. The alarm will not appear on the display. And if the sensor fails, the heater will work until it burns out. At this time, all food in the refrigerator will become unusable.

Watch the video on how to fix the problem yourself if the defrost heater needs to be replaced in the Samsung RL33EA refrigerator.

Two-compartment model with bottom freezer and electronic control. Nou Frost defrosting system with multi-stream air circulation. In the refrigerator compartment, the temperature is uniform due to the Multi Flow technology.The analysis shows that Samsung RL 34 refrigerators have been working properly for 6-7 years. Malfunctions are often associated with improper use of devices. It was noted that refrigerant leaks almost never occur in refrigerators; compressors have been operating for more than 10 years. The most common malfunctions occur in the No Frost system of the Samsung refrigerator. The reasons are the contact of the tube from the compressor with a cold agent and a wet one that drains condensate. This freezes the drain and the condensate flows into the freezer, creating blocks of ice. We suggest watching a video of what you need to do if the water does not leave.

Read also: DIY oil pump repair VAZ 2108

All equipment has a long warranty period of 7 years. During this time, the manufacturer is obliged to provide support and maintenance of the product. This also means the availability of original spare parts.

Therefore, in the event of a breakdown, first of all, you need to carefully study the warranty service agreement. If, nevertheless, the repair of the Samsung refrigerator is carried out at the expense of the consumer, then there are three options:

Contact an authorized service center. This is usually the most expensive option, however the repairs will be done to the manufacturer's standards.
Contact a repair shop. There is an opportunity to save on the cost of work and installed parts.
Diagnose the problem yourself and try to fix it.

With the help of the error reporting system, you can narrow the circle of nodes that need to be checked for operability.

Failure of one of the nodes leads to a specific external manifestation that is seen by the user of the equipment. Any part of the refrigerator can break, but the prevailing faults are different for each manufacturer.

If one or all of the chambers of the refrigerator are warm, but the compressor does not turn on, then there are four main reasons for such a breakdown:

When there is no manifestation of the motor's operation and the sensors do not light up, this means a problem with the electrician. First of all, you need to check the power of the outlet and the integrity of the cable. Then you need to call an electrician or ring the wiring yourself.
The same symptoms can be observed when the electronics of the refrigerator fails. Although Samsung equipment has very high quality boards and high-quality protection against voltage surges, if the power supply is poor, they can still break.
If the indication, control and interior lighting are working, but the unit does not turn on, then the most likely cause is a compressor malfunction.
The breakdown of the temperature sensor manifests itself in a similar way. In this case, the control unit does not receive a signal that the permissible temperature is exceeded, and it does not give a command to start the compressor.

For Samsung refrigerators, there is a way to determine the operability of the temperature sensor, if the cooling does not turn on for a long time - you need to activate the forced cooling or accelerated freezing mode. If the compressor starts up, then the problem is in the sensor.

If the temperature in the chambers is high, but the compressor is operating normally, then most likely the problem is as follows:

Depressurization of capillary tubes and leakage of freon. Reducing the pressure in the system and the ingress of air change the phase transition conditions of the refrigerant. In this case, the cooling capacity of the evaporator decreases or it stops functioning.
Loss of door tightness, as a result of which there is an uncontrolled flow of warm air from the kitchen.

A tightness problem can also be detected by the formation of a small layer of frost (for the freezer compartment) or condensation (for the refrigerator compartment) in the place where the sealing gum should adhere to the refrigerator body.

As a result of the depressurization of the doors, another problem arises - the slowly entering warm air cools down near the door and condensation occurs.

In the freezer, where the temperature is significantly below zero degrees, dense snow formations with an admixture of ice particles grow.

In the refrigerator compartment, condensate seeps through the seal or comes out when the door is opened. In this case, smudges will be visible on the front of the refrigerator.

Condensation formed on the rear wall of the refrigerator is discharged outside through a special drainage hole. Its diameter is small, otherwise cold leakage will occur. The water flows by gravity, so the impurities gradually settle inside the hole.

The resulting constriction gradually transforms into a plug, which prevents water drainage. A puddle forms at the bottom of the refrigerator compartment, as a result of which there is an increase in humidity, the spread of odors and the creation of a favorable environment for the reproduction of microorganisms. Thus, the storage conditions for food deteriorate.

Some refrigerator malfunctions can be identified and corrected by yourself. Modern devices have high-quality self-diagnostics, which allows you to identify a problem without the involvement of a specialist. However, not every repair can be done by hand.

Samsung refrigerators have several malfunctions that are difficult to fix without repair experience and the availability of special equipment.

If a refrigerant leak is detected, it is necessary not only to eliminate the defect in the pipes or their connections, but also to compensate for the lost volume. This is a complex procedure that requires a supply of isobutane and special equipment to measure its weight.

It is impossible to determine the volume of the injected refrigerant "by eye", since at best the set temperature regime will not be observed, and at worst there will be problems with a phase transition and a complete lack of cooling.

If the compressor with an inverter system does not work, then it is necessary to connect the working electronics unit and repeat the start attempt.

In case of a successful start, it can be stated that the problem is on the side of the control board. If the start does not happen, the reason is in the compressor, which needs to be changed.

Replacing a compressor is the same procedure for all brands of refrigerators and freezers. To carry it out, you need a special tool (a burner, precise scales for filling freon, a filling valve, etc.), a supply of refrigerant and experience in carrying out such work. Therefore, it is better to call the masters from the service center who will do all the work at home.

Electronics repair is possible if there are clear signs of damage to board components, such as capacitors (a sign of a malfunction - swelling) or signs of oxidation of the contacts.

Ringing out and restoring electrical conductive circuits, as well as replacing a capacitor or microcircuits requires special equipment (hot air gun, desoldering pump, a soldering iron with a wide tip, etc.) and some preparation.

If the cost of purchasing a new board is high or the delivery time is long, then you can contact a computer repair organization.

The electronics manufactured by Samsung are of good quality and a large number of components are unlikely to fail at the same time. Therefore, the timing and cost of repairs will most likely be insignificant.

The problem with the passage of air through the doors may arise due to their incorrect position. This can be detected using a plumb line.

Before removing the skew, it is necessary to level the refrigerator using a level. The door position is changed using the adjusting bolts.

If the door is installed vertically, but there are signs of air leaking, then the problem is in the seal. If the defect consists in the presence of folds, then they can be eliminated by softening the rubber by heating with hot water or a hair dryer.

The PVC gasket is attached with glue; to remove it, you need a flat screwdriver. Using a spatula and a soft sponge, remove the rubber and glue residues from the door groove.

When installing a new seal, its corners can be slightly heated with a hairdryer to give them more elasticity. For fastening to the door, torque 88 glue or silicone sealant can be used.

For new models, a magnetic tape is integrated into the product, so there is no need to use adhesives to fix it to the door.

The functional test of the temperature sensors can be performed by measuring the resistance on the mating connector of the main board of the electronic module.

Their location depends on the board, but there is an established color differentiation of wires:

freezer sensor - dark blue;
refrigerator sensor - blue;
defrost sensor - yellow.

If, when the temperature changes, the resistance remains at the same level, then this means that the sensor is not working. To change it, it is necessary to remove the back panel that protects the evaporator and the heating elements of the defrosting system.

Sometimes the sensors freeze up and become covered with frost. Since snow is a poor heat conductor, there is no fixation of temperature changes in the refrigerator compartments.

In this case, complete defrosting helps. However, it is necessary to check the fan operation of the NoFrost system to prevent recurrence of the problem.

The drainage hole is located on the rear wall of the chamber at the lowest point of a special trough for collecting water from the evaporator. In order to clean it, you need to use a thin flexible plastic knitting needle or braided wire with a brush attached to them.

The second method of cleaning is to use a syringe with a nozzle of a suitable diameter. The pressure of warm water breaks through the plug. In this case, you cannot use solvents or any cleaning agents - they have a bad effect on plastic.

The drainage hole can be cleaned in 20-30 seconds, so there is no need to turn off and, moreover, to defrost the refrigerator. However, you will most likely need to remove one of the shelves.

Activate Samsung refrigerator test mode. Testing the functionality of temperature sensors by measuring resistance:

A video about the diagnosis of breakdowns and the repair of two Samsung refrigeration units:

Continuation of the previous material:

Due to the fact that different indications are used in different Samsung devices, I posted all the codes.

01 - the ice maker sensor does not work correctly, it is quite possible that the connection is incorrect;
02 - lies the sensor of the refrigerating chamber.Measure its resistance at room temperature, it should be about 6 kΩ
03 - It is necessary to measure the resistance of the defrost sensor of the refrigerating chamber, it should be about 6 kOhm
04 - we check the fan of the refrigerator compartment, here either the fan is covered or the wires are broken
05 - ice maker, leveling device or ice ejector not working
06 - check the functionality and correctness of the CoolSelectZone device connection. No idea what the fuck is this
07 - the external temperature sensor is covered, or simply forgot to connect
08 - malfunction of the freezer temperature sensor;
09 - check the defrost sensor of the freezer evaporator and the defrost heater itself
10 - you need to watch everything related to the fan
11 - we look at the contacts of the capacitor and the capacitor itself

There are also Samsung models on which the error code is indicated differently

R5 or "02" - the sensor is screwed up in the refrigerator
D5 or "09" Is the most common error. Connected with the defrost sensor or the defrost itself, both must be checked
F5 or "08" - the control module does not see the freezer sensor
E5 or "07" - the outside temperature sensor is screwed up
RD - the air damper did not start working correctly

And so in the event of a failure, any part you can calculate the breakdown, and if you are smart enough, then eliminate the malfunction. It should be noted here that the Know Frost system itself, both under the control of mechanics and under the control of electronics, is practically no different, that is, there is a defrost heating element, there is a damper and sensors. In this article, I could not describe all the breakdowns in the No Frost system, but with the development of the site, I think that there will be a lot of material about the repair of these refrigerators, so stay tuned, for sure there will be an article that will be useful to you

Video (click to play).

On my YouTube channel there is a lot of information on repairing refrigerators with the Nou Frost system, you can also find out how to repair a washing machine or vacuum cleaner. Come in - watch, subscribe, like - the channel needs your activity

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