Many users of household appliances are faced with a situation when in the instructions or when talking with a technician it is necessary to clarify what exactly the upper part of the refrigerator is called. This is not just a matter of curiosity, but a necessity for accurately ordering spare parts or describing a malfunction. In everyday life, this zone is often called simply “the top,” but technically it consists of several key elements, each of which has its own strictly defined name.
Understanding the terminology will help you quickly find the necessary information in manuals or clearly explain to the service manager the essence of the problem. Design of a refrigerated cabinet may differ depending on the type of cooling system, but the basic elements remain unchanged. In this article, we will examine in detail the anatomy of the upper zone of the unit.
Regardless of the brand, be it Indesit, Bosch or LG, the upper section performs one of two functions: either it is a deep-freezing zone, or a technical compartment with equipment. Let's figure out what makes up this important part of your refrigerator.
Official names of the upper section
In technical documentation and spare parts catalogs you will rarely see the word “top”. Engineers and manufacturers use more precise terms depending on the device's layout. If the freezer is located on top, then this entire section is called freezer compartment or freezer compartment.
However, if we are talking about an external element covering the insides, then the term “lid” or “panel” is used. In models with the system No Frost it is under the top panel that the fan and evaporator are hidden. It is important to distinguish between these concepts so as not to be mistaken when searching for a part.
- 🧊 Freezer compartment —the main volumetric element for freezing food, occupying the upper tier.
- 🔩 Top panel (Top Panel) —an external metal cover, often part of the body.
- ❄️ Evaporator is a hidden heat exchanger, which in many models is located at the top behind a plastic wall.
It is worth noting that in some built-in models the upper part can be hidden by a furniture facade or decorative box. In this case, the technical name remains the same, but visual access to it is limited by the design of the kitchen unit.
⚠️ Attention: When ordering spare parts by catalog number, always check whether the part refers to the inner chamber or the outer casing, since the names in different language versions of the instructions may vary.
Outer cover: top panel and its functions
The outer top part of the refrigerator cabinet is correctly called top panel or the top cover of the case. This is not just a decorative element. In many models, especially older or budget ones, condenser tubes pass through this panel, which release heat to the environment.
Modern units often use this space to accommodate additional thermal insulation or electronic control units. If you plan to build in a refrigerator, it is important to know that the top panel may have ventilation holes that cannot be blocked.
The material for production is painted steel or plastic that imitates metal. Damage to this element is not always critical for the operation of the compressor, but can disrupt aesthetics and heat exchange.
- 🛡️ Protection —protects internal components from dust, moisture and mechanical damage from above.
- 🌡️ Heat transfer —in some models it is involved in the cooling process of condenser tubes.
- 🎨 Design - completes the appearance of the device, often has a glossy or matte finish.
When transporting, other loads are often placed on the top panel, which is absolutely not allowed. Thin metal can be deformed, which will lead to a loss of tightness or misalignment of the doors.
Internal structure: evaporator and fan
If you look inside the freezer and remove the back or top plastic panel, we will find the “heart” of the cooling system. In refrigerators with automatic defrosting (No Frost), in the upper part there is an evaporator.
This is an aluminum radiator through which the refrigerant circulates. A fan is almost always installed next to it (fan), which forcibly drives cold air down into the refrigerator compartment. It is these components that most often require attention when ice or noise appears.
| Component | Location | Function | Frequent malfunction |
|---|---|---|---|
| Evaporator | Behind the rear/top wall | Air cooling | Icing, freon leakage |
| Fan | Next to the evaporator | Circulation flows | Bearing wear, noise |
| Defrost heating element | Under the evaporator | Ice defrosting | Filament burnout |
| Temperature sensor | On the evaporator | Cycle control | Incorrect readings |
Access to these components usually requires partial disassembly of the internal chamber. Plastic box, hiding them, is attached to latches or screws, which can be hidden under decorative plugs.
Why is the fan on top?
Cold air is heavier than warm air. By placing the fan and cold source at the top, engineers use natural convection: the cold flow descends, displacing warm air upward to the evaporator. This makes the system more energy efficient.
Technical compartment in the upper part
There is a category of refrigerators where the upper part is exclusively technical. In some industrial or specific household models, a compressor-capacitor unit may be located there, although in modern household “boxes” the compressor is almost always located at the bottom.
However, in the upper zone they often hide control unit (electronic board) and a start-up relay. If your refrigerator stops responding to buttons or begins to behave strangely, the problem may lie precisely in the “brains” located under the top cover.
- 🧠 Electronics - the control board is often hidden at the top to avoid water from leaking from below.
- 🔌 Switching —in this area there are often junctions of wires going to doors and lighting.
- 🔇 Noise insulation —sometimes the top panel contains additional sound-absorbing materials.
During diagnostics For faults, technicians often begin checking by checking the continuity of the circuits approaching the upper part of the case. Oxidation of contacts in this place is a common problem in conditions of high humidity in the kitchen.
⚠️ Attention: Before attempting to remove the top panel to access the electronics, be sure to unplug the refrigerator! The 220V voltage is dangerous to life, and static electricity can damage the board.
Problems and malfunctions of the upper zone
The most common problem associated with the upper part of the refrigerator is the formation snow coat or ice. If you notice ice on the ceiling of the freezer or under the top lid, this is a signal that the defrost cycle is broken.
Another common complaint is extraneous noise. A humming, whistling, or crackling noise coming from above usually indicates a problem with the fan or vibration in the evaporator tubes. Sometimes the sound occurs due to the fact that the top panel does not fit well to the case.
☑️ Diagnostics of noise from above
It is also worth mentioning the problem of deformation. If something was dropped or a heavy object was placed on the top of the refrigerator, the metal could bend. This leads to the fact that the door no longer closes tightly, and the tightness is broken.
In models with a display on the door of the upper chamber, the control panel itself or the cable that goes inside the case through the upper hinge assembly often fails. This requires careful replacement of the module.
Care and maintenance of the upper part
Regular care of the upper part of the refrigerator will extend its service life. The external top panel must be wiped clean from dust, as it heats up during operation and the dust can burn, creating an unpleasant odor when first turned on after inactivity.
If you have a model No Frost, it is recommended to carry out preventive defrosting once every year or two. Even if the system is automatic, ice can accumulate in hard-to-reach areas of the top chamber, which will eventually form into a block and block the fan.
When washing the ceiling of the freezer, avoid using sharp objects to chip the ice. It is very easy to puncture the aluminum evaporator, located just behind the plastic, and repairing such damage is often uneconomical.
⚠️ Attention: If you notice that the top of the refrigerator has become excessively hot (not just warm, but scalding), this may indicate a clogged condenser or problems with refrigerant circulation. Contact a specialist.
Frequently asked questions (FAQ)
Is it possible to place other items on the top of the refrigerator?
It is strictly not recommended. The top panel is not designed for high loads. Heavy objects (microwaves, jars of pickles) can cause metal deformation, disrupt the operation of condensation tubes (if they are located there) and impair ventilation, which will lead to overheating of the compressor.
Why is water dripping from the top of the refrigerator?
This may be a sign of a clogged drain hole in the freezer (the water does not drain away and overflows) or a leak in the door seal, which causes warm air to condense in the upper zone. Also check if the water evaporation tray, which is often located above the compressor, is not clogged, but water flows there through a tube inside the cabinet.
What is the name of the plastic cover inside the freezer?
In spare parts catalogs it may be listed as “rear wall of the freezer”, “evaporator panel” or “inner cover” air duct." For an accurate search, it is better to use the model of your refrigerator and the diagram (explosion view).
Do you need to lubricate the hinges of the upper door?
Modern hinges often have plastic bushings and do not require lubrication. However, if the door begins to creak, you can use a special silicone lubricant. It is better not to use ordinary machine oil, as it can drip and stain food or the floor.