Fridge Master Male • Russian Federation

A refrigerator compressor runs nonstop: the dangers of continuous operation
A properly functioning refrigerator operates in cycles: it produces cold, then shuts off for 15-20 minutes. If the motor hums for hours, this indicates a breakdown or improper operation. In such a situation, it is important to promptly order refrigerator repair and diagnostics in Moscow to avoid burnout of the motor windings. When the compressor doesn't pause, it overheats, and the lubricating oil loses its properties. This leads to seizure of the piston group, after which the unit cannot be restored; only a complete replacement is required.
Consequences of continuous operation for equipment components
The compressor is the heart of the refrigeration system. It is designed for a specific operating time factor, which is typically 0.4-0.6. This means that the motor should run for 25-35 minutes out of every 60 hours. When this factor reaches 1.0, meaning it runs for 60 minutes out of 60, irreversible processes begin. Friction between the parts inside the cylinder increases due to the heating of the metal. The oil that should lubricate the piston begins to burn and turn into carbon deposits. This sludge clogs the capillary tube, ultimately rendering the system inoperable.
Operating in this mode dramatically increases electricity bills. Modern Class A+ models typically consume approximately 0.8–1.2 kW per day. With continuous operation, this figure increases 3–4 times. In addition to financial losses, there's a risk of ignition of the starting relay. It is not designed to withstand continuous high-voltage current and may melt. If you notice a burning plastic smell or the refrigerator body becomes hot to the touch, unplug the appliance immediately.
Besides the motor itself, the evaporator is also affected. With the constant injection of freon, a thick layer of ice, or "fur coat," forms on the walls. The snow buildup acts as a thermal insulator, preventing the sensors from reading the actual temperature inside the refrigerator. As a result, food in the main compartment can freeze, and the motor continues to crank, trying to cool the space through the layer of ice. This vicious cycle can only be broken by professional diagnostics and repair.
How to check the condition of your refrigerator yourself
Before disassembling the case or calling a technician, check the basic settings and operating conditions. Often, the cause lies in small household issues that can be easily fixed in five minutes without tools.
• Check the tightness of the seal. Take a piece of paper, clamp it under the door, and try to pull it out. If the paper comes out freely, the seal is broken. Warm air from the room is entering, and the compressor is trying to compensate for the increase in temperature.
• Check the thermostat settings. In summer, users often set the cooling to maximum. In hot weather, like +30°C, a budget compressor physically cannot cool the compartment to +2°C without shutting off. The optimal setting is the middle or 3-4°C mark.
• Inspect the rear panel. If the radiator (condenser) is clogged with dust or blocked by boxes, heat output decreases. The refrigerator needs to transfer heat to the outside environment. Vacuum the grille and move the cabinet 7-10 cm away from the wall.
• Quick Freeze mode. Make sure the Super Frost button is not pressed. In older models, this mode does not turn off automatically and keeps the motor running until it is manually turned off.
Technical malfunctions: why the automatic control system doesn't detect cold
If external factors have been ruled out, the problem lies within the freon circulation system or in the electronics. The most common cause is a refrigerant leak. Freon circulates in a closed circuit under pressure. If a microcrack appears in the copper or aluminum tubes, the gas escapes. The pressure drops, reducing system performance. The motor runs but cannot generate the desired temperature, so the thermostat does not signal shutdown.
The second most common problem is a clogged capillary tube. This is a thin copper tube with an internal diameter of approximately 0.5–0.8 mm. Over time, oil breakdown products form a plug. Gas passes through the tube with difficulty, and cooling occurs unevenly. Typically, with this type of failure, the freezer operates normally, but the refrigerator compartment becomes warm. The compressor receives a signal from the "warm" sensor and continues to build pressure, working beyond its limits.
A failed temperature sensor (thermostat) also prevents shutdown. In mechanical models, the contacts inside the unit stick. In electronic models, the thermistor transmits incorrect data to the control board. The model "thinks" the temperature is 15°C inside, even though it has long been below freezing. In this case, food in the vegetable compartment freezes, and the compressor continues to operate. Replacing the sensor is a standard procedure that takes no more than 40 minutes.
List of critical symptoms of failure
1. Ice only in one corner. This is a clear sign of a partial freon leak or frozen insulation.
2. Loud clicking sounds during startup. The starting relay tries to start the motor, but the protection is triggered.
3. Bulging of the rear wall inside the chamber. This indicates that gas is escaping directly into the insulation layer. This repair is considered complex and requires opening the cabinet.
4. A constant humming sound without cooling. The compressor is running, the pistons are moving, but there is no refrigerant in the system. Dry running will kill the motor within a few hours.