How the Ariston refrigerator works correctly: norms, cycles and signs of malfunctions

The refrigerator Ariston is a technique that combines Italian design and technology adapted to Russian conditions. But even the most reliable models require an understanding of how they are should work normallyin order to notice deviations in time. For example, why does the compressor turn on every 15 minutes and not once an hour? Or why ice forms on the back wall of the freezer, although the system No Frost promises its absence?

In this article we will analyze physical principles of operation refrigerators Ariston (including models with Total No Frost, Low Frost and drip system), normal temperature, sound and energy consumption indicators. And we will also learn to distinguish natural processes (for example, a long first cooling cycle after defrosting) from alarm signalsthose requiring the intervention of a master.

1. The principle of operation of Ariston refrigerators: how the cooling circuit is designed

All refrigerators Ariston (regardless of the defrosting system) operate on compression cyclewhere the refrigerant (usually isobutane R600a) circulates in a closed circuit. Main stages:

• 🔹 Compression: The compressor (the heart of the system) compresses the gaseous refrigerant, raising its temperature to +70...+90°C.
• 🔹 Condensation: Hot gas passes through the grille on the back wall (condenser), gives off heat to the room and turns into liquid.
• 🔹 Expansion: Liquid refrigerant passes through a capillary tube (or expansion valve), its pressure and temperature drop sharply.
• 🔹 Evaporation: Cold liquid enters the evaporator (hidden behind plastic panels inside the chambers), boils, absorbing heat from the chamber, and turns into gas again.

The cycle is repeated automatically, controlled thermostat (in mechanical models) or electronic unit (in modern rulers Ariston MBA, HB, NR). Important: in models with No Frost a fan is added for forced air circulation, and the evaporator is moved outside the chambers (usually into the freezer compartment).

Difference Total No Frost from Low Frost: in the first case, ice does not form either in the refrigerator or in the freezer, in the second - only in the freezer, rare (1 time every 6-12 months) manual defrosting is required.

⚠️ Attention: If your refrigerator Ariston c No Frost was produced before 2018, it may use refrigerant R134a instead of R600a. This affects the pressure in the system and requires different filling standards during repairs.

2. Normal temperature conditions: what should be in the refrigerator and freezer compartments

Optimal temperatures for refrigerators Ariston (according to the manufacturer and GOST 16317-87):

How to check the temperature without a thermometer? In models with electronic control (for example, Ariston MBA 2294), the indicators are displayed on the display. In mechanical ones - focus on:

• 🥛 Dairy products do not sour for 5-7 days.
• ❄️ On the back wall of the refrigerator compartment (in drip models) light frost forms, which melts during defrost.
• 🍗 Raw meat does not “float” in the blood (a sign of freezing) and is not covered with mucus (a sign of overheating).

3. Compressor operating cycles: how long should it work and rest

The compressor is the noisiest and most energy-intensive element of the refrigerator. Its operation is cyclical: a period of active cooling is followed by a pause. Normal indicators for: 10–30 minutes of work, then 15–40 minutes of rest (depending on workload, room temperature and model). Cycle duration: up to 42 dB (comparable to a quiet conversation). In models with Ariston:

• 🕒 Cycle duration: 10–30 minutes of work, then 15–40 minutes of rest (depending on workload, room temperature and model).
• 🔊 Noise level: Up to 42 dB (comparable to a quiet conversation). In models with No Frost fan noise is added (~38–40 dB).
• ⚡ Energy consumption: Modern refrigerators Ariston class A+++ consume 200–350 kWh per year (about 0.5–1 kWh per day).

When the compressor runs longer than usual:

• 🌡️ Room temperature above +30°C (normal for Ariston - up to +43°C, but energy consumption will increase by 30–50%).
• 📦 The door often opens or the seal is worn out.
• ❄️ There are a lot of unrefrigerated foods in the freezer (for example, warm pans).
• 🔧 The thermostat or temperature sensor is faulty.

⚠️ Attention: After the first turn on or defrosting, the compressor may work Continuously 2-4 hours —this is normal. If after 5-6 hours the cycle has not returned to normal, check whether the mode is turned on Super Freeze or whether the ventilation grill is blocked.

Turn off the accelerated freezing mode|Check that the door is closed tightly|Make sure that the food is not blocked air circulation|Measure the room temperature (should be +16...+32°C)-->

4. The No Frost system: how it works and why ice still forms data-i="150">without user participation. How it works:

Technology No Frost in refrigerators Ariston (for example, in models HB 5201 or MBA 2294) implies automatic defrosting without user intervention. How does this work:

1. The fan evenly distributes cold air throughout the chambers.
2. Moisture from the air settles on hidden evaporator (located behind the back panel of the freezer).
3. Every 8-12 hours it turns on heating element (heating element)which melts the frost.
4. Water flows into the pan above compressor and evaporates from its heat.

Why does ice sometimes appear in No Frost freezers leads to the entry of warm air and condensation.

• 🚪 Frequent opening of the door freezer leads to warm air entering and condensation.
• 🔌 Malfunction of the defrosting heating element (contacts are burnt out or oxidized).
• 🌀 Drainage blockage holes —water does not go into the pan and freezes.
• 🛠️ Failure of the defrost sensor (in electronic models).

How to check No Frost for functionality:

1. Disconnect the refrigerator for 12 hours (the ice should melt yourself).
2. Listen: 1-2 hours after turning on the fan should start working (a slight whistle or air noise).
3. Check whether the back wall of the freezer gets warmer after 6-8 hours of operation (a sign of the heating element working).

What happens if you ignore the ice in No Frost?

A snow “coat” more than 5 mm thick impairs heat transfer, the compressor begins to wear out, and energy consumption increases by 20–30%. In advanced cases, ice can block the fan, which will lead to overheating of the freezer and spoilage of food.

5. Sounds of an Ariston refrigerator: which are normal and which are not

The refrigerator Ariston is not a silent device. Normal sounds:

Abnormal sounds requiring diagnostics:

• 🔊 Loud knocking or vibration: loose compressor mounts or shock absorbers.
• 🌀 Strong hum without pauses: the compressor is wearing out (possibly a refrigerant leak).
• 💥 Sharp pops: short circuit in the start relay.
• 🌀 High-pitched whistling: refrigerant leakage through a crack in the tube.

6. Defrosting and care: how often and why it needs to be done

Even refrigerators with No Frost require periodic maintenance. Recommendations for different systems:

• 💧 Drip system (models Ariston BCB, BL): defrosting once every 3-6 months. A sign of need is ice more than 5 mm thick on the back wall.
• ❄️ Low Frost: defrost the freezer once a year (ice accumulates only on the evaporator).
• 🌀 Total No Frost: defrosting is not required, but once a year you need to wash the internal surfaces and check the drainage hole.

How to defrost correctly:

1. Unplug the refrigerator.
2. Remove all food and shelves.
3. Wait 3-4 hours (the ice should melt naturally; do not use a hairdryer or knife!).
4. Rinse the chambers with warm water and soda (2 tablespoons per 1 liter of water).
5. Wipe dry and leave the doors open for 1 hour to ventilate.

⚠️ Attention: In refrigerators Ariston s electronically controlled after defrosting, the mode may go wrong. To restore the settings, press and hold the button Super Cool 5 seconds (until a sound signal).

7. Energy consumption: how much should an Ariston refrigerator “eat”

The energy efficiency of refrigerators Ariston depends on the class, volume and defrosting system. Average indicators:

How to reduce consumption electricity:

• 🌡️ Set the temperature in the refrigerator compartment to +5°C (not +2°C).
• 📦 Do not load the chambers by more than 70% (optimally - 50–60%).
• 🔌 Place the refrigerator away from the stove, radiator or direct sunlight.
• 🧊 Defrost regularly (in drip models, ice 1 cm thick increases energy consumption by 15%).

If the refrigerator begins to consume more than normal, check:

• 🔧 Door seal (if worn, replace with the original one, for example Ariston 48124100100).
• 🌀 Rear grille (dust on the condenser increases consumption by 20–30%).
• 📊 Settings (in electronic models the mode could be turned on Holiday or Super Freeze).

8. Typical Ariston malfunctions: when to call a technician

Some problems can be fixed yourself, others require professional repairs. Let's consider common cases:

The most common user errors leading to breakdowns:

• 🔌 Frequent on/off (the compressor wears out 2 times faster).
• 🧊 Defrosting with a knife or other sharp objects (risk of damaging the evaporator).
• 🧹 Use of abrasive detergents (damage the coating of the chambers).
• 📦 Hot food storage (leads to icing and compressor overload).

⚠️ Attention: If an error appears on the refrigerator display Ariston or E3 or E4, this indicates a problem with the sensors temperature. Before visiting the technician, try resetting the error by turning off the refrigerator for 10 minutes. If the code appears again, the sensor needs to be replaced.

FAQ: Frequently asked questions about the operation of Ariston refrigerators

Why does the Ariston refrigerator get very hot on the sides?

This is normal! wall) and can heat the side panels to +40...+50°C. The only danger is when the case heats up unevenly (for example, one side is hot and the other is cold) - this may indicate a refrigerant leak.

Is it possible to turn off the Ariston refrigerator? at night to save energy?

No, this will lead to the opposite effect. Each time you turn on the compressor consumes 3 times more energy than during stable operation. In addition, the food in the freezer may begin to thaw, and when re-frozen, ice crystals will form, spoiling their structure.

Why is it all the same in the Ariston refrigerator with No Frost? is ice forming?

The reasons may be different:

1. Faulty Defrost heating element (burnt out or oxidized contacts).
2. Clogged drain hole in the freezer (water does not drain and freezes).
3. Failed defrost sensor (in electronic models).
4. Frequent opening of the door or placing warm food.

For diagnostics, turn off the refrigerator for 12 hours. If the ice has not melted, there is a problem in the system No Frost.

How to properly transport an Ariston refrigerator to a new location?

Transportation rules:

• 🚛 Transport only in vertical position (slope no more than 40°).
• 🕒 After transportation, let it settle 4–6 hours before turning on (the oil in the compressor should drain).
• 🔌 Secure the compressor with shipping bolts (if provided by the model).
• 🧊 Deliver in heated transport (at temperatures below +5°C you cannot turn on the refrigerator!).

What to do if the Ariston refrigerator does not turn on after the power is turned off?

Possible causes and solutions:

• 🔌 Power surge protection has tripped — wait 5–10 minutes and turn it on again.
• 📊 The settings are lost —execute reset by holding the button Super Cool 5 seconds.
• ⚡ The fuse is blown in the plug or socket - check with a multimeter.
• 🔧 The electronic unit is faulty - diagnostics are required.

If the refrigerator does not turn on after these steps, do not try to disassemble it yourself - contact the service center.