The situation when the upper chamber of the refrigerator Haier stops cooling food, while the freezing section continues to operate normally, is one of the most common and alarming for owners.
This malfunction indicates that refrigerant circulation is broken, or the temperature control system has gone out of order building, but the compressor itself is still functioning.
In contrast to a complete failure of equipment, when the device is silent, there is a partial loss of functionality, which often confuses inexperienced users.
It is important to understand that modern models Haier, especially with the system No Frost, have a complex design where the cold is forced in, and a failure in one node blocks the cooling of the main chamber.
The fundamental difference in the operation of the No Frost cameras
To understand the essence of the breakdown, you need to understand the physics of the process, so how single-chamber and two-chamber refrigerators work differently.
In models with No Frost the evaporator is located in a hidden niche, most often behind the back wall of the freezer, and cold air is forced into the refrigerator compartment through special air ducts using a fan.
If you hear the hum of a running motor and see frost in the freezer, but it’s warm at the top, then the problem lies not in the generation of cold, but in its distribution.
Sometimes the cause is trivial overload products when the packages block the outlet openings of the air ducts, blocking the air flow.
⚠️ Attention: In refrigerators Haier with a system Multi Air Flow the dampers may be electronic. An attempt to force the food apart can damage the damper mechanism, which will lead to expensive repairs.
It is also worth considering that some budget models use cascade system cooling, where freon passes first through the freezer and then through the main chamber.
If an ice plug has formed in the system or a microclog has occurred, the refrigerant can circulate only in the first circuit (freezer), without reaching the second.
Faults in the defrost system and sensors
One of the most likely reasons why the refrigerator Haier does not keep the temperature in the upper compartment is a failure in the system automatic defrosting.
On the evaporator, which is hidden behind a plastic panel, a layer of ice grows, which over time turns into a monolithic block and blocks the air supply channels.
The fan begins to hum, trying to drive air through the ice barrier, but the cooling efficiency drops to zero, although in the freezer where it is located the evaporator itself, the cold is preserved.
A chain of elements is responsible for the defrosting process: defrost heating element, defrost thermostat (evaporator temperature sensor) and timer (or electronic control module).
If one of these components fails, the ice does not melt, and after 2-3 days of operation in this mode, the refrigerator stops freezing in the main chamber.
This can be diagnosed by a characteristic sign: after the device is completely defrosted within 24 hours, it begins to work normally, but after a few days the problem returns.
How to check the defrost heating element?
To check the heating element you need a multimeter. You need to ring the contacts of the heating element. If the device shows a break (one or zero depending on the model), the heating element has burned out and requires replacement. The resistance of a working heating element is usually 200-400 Ohms.
Often owners are faced with the failure of the defrost sensor, which incorrectly reads the temperature and does not give a command to turn on the heater.
In models Haier with electronic control the display may light up error codes, for example F1 or F2, which directly indicates a problem with the sensors.
Problems with the compressor and freon
The situation when the freezer is working but the refrigerator is not may indicate freon leak or a decrease in compressor performance.
If there is insufficient quantity there is not enough refrigerant in the pressure system to “push” the gas into the second circuit (refrigerator compartment), and it condenses only in the freezer.
In this case, the condenser (grid at the back) can only be partially hot, and the compressor itself works almost non-stop, trying to gain temperature.
Another scenario - compressor malfunction. If its valve “sticks” or the piston groups are worn out, it does not create sufficient pressure for full circulation.
| Symptom | Probable cause | Nature of operation motor |
|---|---|---|
| The freezer is freezing, the top is warm | Freon leakage | Works without stopping |
| Ice on the back wall of the freezer | System defrost | It turns on/off cyclically |
| Humming, but there is no cold anywhere | The compressor is jammed | It buzzes for 5-10 seconds and clicks |
| It’s cold only at the back wall | The fan is faulty | Works normally |
Diagnosing leaks at home is difficult, as it requires the use of leak detector or soap solution to check all connections.
If you notice oily spots under the refrigerator or in the compressor area, this is a sure sign of depressurization of the circuit.
In such cases, you need to call a technician to find the leak, solder and refill freon R600a or R134a depending on the model.
Failures in operation fan and dampers
In refrigerators Haier with a system No Frost the fan located in the freezer is responsible for air circulation.
If its impeller is iced up or the motor is burned out, cold air simply remains in the freezer and does not fall into the upper compartment.
You can check this by opening the freezer door: if, when opening, you do not hear a characteristic change in the sound of the motor or the hum of the fan, it means that it is not working.
Sometimes the fan is working, but is blocked by frozen ice, which often happens when the defrost system is malfunctioning, which was mentioned above.
The second important element is the air damper (damper). This is an adjustable damper that opens and closes to allow cool air into the refrigerator compartment.
If the damper is stuck in the closed position (due to ice or a broken actuator), air cannot physically enter the main compartment.
On electronically controlled models, the damper actuator may burn out and it will remain in the "closed" position even if the control module gives a signal.
☑️ Diagnostics of the fan and damper
Electronic control module and thermostats
Modern refrigerators Haier are controlled by complex electronics that process signals from various thermal sensors.
If the temperature sensor in the refrigerator compartment is “lying” and shows the module that it is already -5°C, although in fact it is +15°C, the compressor will not turn on for cooling.
Often the problem lies in oxidation of contacts or broken wires going to the sensors, especially in the door bends or in the evaporator area.
A firmware failure is also possible the control module itself, which requires flashing or replacing the board.
⚠️ Attention: Technical characteristics and location of sensors may vary depending on the specific series. Always check the diagram of your model before replacing parts. Haier. Always check your model diagram before replacing parts.
Mechanical thermostats (in older models) can simply “stick” without opening or closing the contacts at the right time.
Diagnostics of electronics requires special knowledge and instruments, so if you suspect a module, it is better to contact a service center.
Procedure for action if a malfunction is detected
If you are faced with the described problem, do not panic, but you should not delay the solution, since the products in the upper chamber may spoil.
First of all, you need to check the refrigerator during the day, turning it off from the mains and opening the doors. full defrosting refrigerator for 24 hours by unplugging it and opening the doors.
This will eliminate the option of a “snow coat” on the evaporator, which blocks the airflow.
After defrosting, turn on the device and check the operation: if it starts to freeze again, the problem was in the ice, and you need to look for the reason for its formation (sensors, heating elements).
If defrosting does not help, check the tightness of the rubber seals doors.
The suction of warm air causes the compressor to wear out, and the system may not cope with heat gain, especially in summer.
Make sure that the refrigerator is level and the legs are adjusted so that the door closes tightly under its own weight.
How to check the seal?
Use a sheet of paper. Clamp it with a door around the perimeter. If the sheet is pulled out without effort, the seal does not fit tightly and requires replacement or adjustment.
When you need to call a technician
There are a number of situations when self-repair is not only useless, but also dangerous for the equipment.
If after defrosting the problem does not disappear, and you hear that the compressor is working, but there is no cold - most likely, you need refilling with freon.
It is impossible to independently find a micro-leak and properly solder the tubes without professional equipment.
You also need a technician if you see obvious mechanical damage to the condenser tubes or hear the hissing of gas.
Intervention in the cooling system without a license can lead to complete loss of the product warranty Haier.
A qualified specialist will diagnose the pressure in the system, check the current consumption of the compressor and accurately determine the breakdown unit.
Why does the refrigerator freeze only near the back wall?
This is a sign that that the fan does not spread the cold throughout the chamber volume. Either it is broken or the air ducts are clogged with food or ice. In models with a crying system, this may be the norm if the temperature generally remains stable, but if the food at the door is warm, diagnostics are needed.
Is it possible to operate a refrigerator with a non-functioning upper chamber?
For a short time - yes, if you put perishable food in the freezer. However, long-term operation in this mode (especially if the cause is a leak or overheating of the motor) can lead to combustion of the compressor, the repair of which is very expensive.
What does the flashing temperature indicator on the Haier display mean?
A flashing indicator usually signals an increase in the temperature in the chamber above the permissible norm. If after defrosting and rebooting (disconnecting from the network for 15 minutes) the blinking continues, this is an error code, the decoding of which must be found in the instructions for the specific model.