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Fridge (Refrigeration ) Fault
Diagnosis Centre

Let us look into some of the common faults experienced by users of both home and commercial fridges, along with their diagnoses. This guide helps you identify these issues accurately and perform a proper diagnosis, ensuring that repairs address the actual problem and restore the appliance’s functionality
Fridges Repairs
A fridge that fails to cool properly may have dirty condenser coils, a faulty thermostat, or a low refrigerant level due to a leak. Start by cleaning the condenser coils to ensure proper heat dissipation. Check the thermostat settings and test if it responds to adjustments. If the compressor is running but the fridge remains warm, a refrigerant leak or a faulty evaporator fan could be the issue. Inspect the evaporator coils for frost buildup, which may indicate a defrost system failure. If the compressor is silent or clicking frequently, the start relay or compressor itself may need replacement.

Fridge Over-Freezing or Ice Build-Up

If a fridge or freezer section is excessively cold or covered in ice, it could be due to a defective thermostat, a faulty temperature sensor, or a malfunctioning defrost system. First, check the thermostat setting and adjust it to a higher temperature. If ice continues to form, the defrost heater, defrost timer, or defrost thermostat may be failing, preventing proper defrosting cycles. Blocked air vents can also cause uneven cooling—ensure they are clear. A damaged door seal may allow moisture to enter, leading to frost buildup.

Fridge Making Strange Noises

Unusual noises in a fridge can be caused by a failing evaporator fan, a faulty condenser fan, or a malfunctioning compressor. A rattling noise may indicate loose or broken fan blades, while a loud buzzing or clicking sound could mean the compressor is struggling to start. If you hear a gurgling sound, it may be normal refrigerant movement, but if the noise is excessive, it could signal a refrigerant flow issue. A high-pitched squealing often points to a failing motor bearing in the fans or compressor.

Fridge Water Leaking Inside or Outside

Water pooling inside or outside the fridge is often due to a clogged defrost drain, a faulty water inlet valve, or a damaged door gasket. Start by inspecting the defrost drain hole for blockages—use warm water to clear any ice buildup. If the fridge has a water dispenser or ice maker, check the water supply line and inlet valve for leaks. Water dripping inside the fridge may result from excessive condensation due to a poor door seal, allowing warm air inside.

Fridge Not Turning On

A fridge that does not power on may have a faulty power supply, a defective start relay, or a failed compressor. Begin by checking if the power cord is securely plugged in and if the outlet is functioning. If the fridge clicks but doesn’t start, the start relay or capacitor may need replacing. A completely unresponsive fridge may have a faulty control board or a blown fuse. If the compressor is the issue, it may need professional diagnosis or replacement.

Fridge Cycling On and Off Frequently

A fridge that turns on and off too often may have dirty condenser coils, a defective thermostat, or an overworked compressor. Ensure the coils are clean to allow proper cooling. A faulty thermostat may cause the compressor to start and stop erratically—test it by adjusting the temperature setting. Overloading the fridge or placing it in a hot environment can also cause frequent cycling as it works harder to maintain the desired temperature.

Excessive Condensation or Frost Build-Up

Condensation or frost forming inside the fridge is often due to a damaged door seal, a malfunctioning defrost system, or high humidity levels. Inspect the door gasket for cracks or warping and replace it if necessary. If frost accumulates around the evaporator coils, the defrost heater or defrost timer may be failing, preventing proper defrosting cycles. Keeping the fridge door open for too long can also cause excess moisture to build up inside.

Ice Maker Not Working

An ice maker that fails to produce ice may have a clogged water filter, a frozen water supply line, or a faulty ice maker motor. Start by checking the water supply and ensuring the filter is not clogged—replace it if it’s old. If the water line is frozen, thaw it using warm air. The ice maker assembly may also have a mechanical failure, requiring replacement. If no water is reaching the ice maker, inspect the inlet valve for blockages or electrical failure.

Fridge Fans Not Working

If the fridge’s evaporator or condenser fan is not running, it may be due to a faulty motor, electrical failure, or dirt buildup. The evaporator fan circulates cold air inside the fridge—if it fails, food may not cool properly. The condenser fan removes heat from the system; if it stops working, the compressor may overheat. Check for obstructions around the fan blades and test the motor for electrical continuity.

Fridge Temperature Fluctuations

A fridge with inconsistent temperatures may have a faulty thermostat, restricted airflow, or a refrigerant leak. Ensure that vents are not blocked by food items, allowing air to circulate freely. Test the thermostat by adjusting the temperature setting and listening for a response from the compressor. If cooling is uneven, the evaporator coils may have frost buildup, indicating a defrost system issue. A refrigerant leak can also lead to inconsistent cooling and may require professional repair.

Fridge Control Panel Issues

Malfunctions in a fridge’s digital control panel may result from a faulty power supply, a damaged PCB (printed circuit board), or software glitches. If the control panel is unresponsive, try unplugging the fridge for a few minutes to reset it. Check for loose connections or signs of burned-out circuitry on the control board. Power surges can also damage electronic components, requiring replacement of the control module.

Fridge Door Seal Damage

A worn or torn door gasket can cause temperature inconsistencies, increased energy consumption, and frost buildup. Inspect the seal for cracks or warping and replace it if it does not form a tight seal. Cleaning the gasket regularly with warm water and mild detergent can help maintain its flexibility. If the seal is not properly installed, it may allow warm air inside, affecting cooling efficiency.

Commercial Fridge Repairs

Frequently Asked Questions

Repairs FAQ

The cost of repairs depends on the type of appliance, the nature of the problem, and the required replacement parts. It's best to contact a repair service or technician for an estimate based on your specific situation.

If your appliance is under warranty, it's generally advisable to check the terms and conditions. Repairs covered by the warranty may be done by authorized service centers or technicians specified by the manufacturer.

Regular servicing intervals vary depending on the type of appliance. Some appliances, such as air conditioners or refrigerators, may benefit from annual maintenance, while others may only require servicing when an issue arises. Refer to the manufacturer's recommendations for guidance.