Fridge diagnosis is a practical guide that helps you go from a symptom to the most likely cause—without guessing or replacing parts “just in case”.

The idea is to follow a clear sequence of checks so you can find the fault logically and avoid skipping key steps.

It’s built for real-world cases like: not cooling, over-freezing, heavy frost buildup, fan not spinning, turns on and off, or unusual noises.

To use it correctly, type the problem exactly like you would say it out loud: start with “my fridge…” and then the symptom (don’t write “why”). Finally, choose the type: Digital or Analog.

The tool takes your symptom and shows the right guide, with checks in order—starting with the simplest, safest, and most affordable steps.

This reduces mistakes, saves time, and helps you avoid buying unnecessary parts when the issue is something basic.

At each step you’ll see what to check, what should happen “if it’s OK,” and what it means “if it’s not,” so you can decide with confidence.

When measurements are needed, you’ll get reference values (continuity, voltage, and resistance) plus safety tips for measuring with a multimeter; if you need extra help, use quick guide to using a multimeter.

The digital version focuses on the control board, NTC sensors, controlled fans, the display, and possible error codes.

With these models, it’s common to check connectors, signals, sensors out of range, and defrost control managed by the board.

The analog version focuses on classic components like the thermostat, defrost bimetal, defrost heater, PTC/start relay, thermal protector, and wiring.

To understand basic measurements and electrical relationships, our Ohm’s Law calculator can help you interpret voltage, current, and resistance while testing components.

Each guide includes a “quick diagnosis” with initial checks that solve many cases without taking anything apart.

For example: power supply, outlet or power strip, temperature setting, door gasket condition, rear ventilation, and condenser cleaning.

These first checks help you rule out the most common issues before moving on to more technical tests or replacing parts.

When the symptom requires it, we move to fans, continuity checks, defrost system status, approximate sensor readings, and compressor start verification—always in a logical order.

Before opening the fridge: unplug it, wear gloves, and work in a ventilated area to reduce risk.

If you’re not comfortable with electricity, measurements, or soldering, the safest option is to call a qualified technician—don’t improvise.

Keep in mind that refrigerant leaks or a clogged capillary tube require specific tools, experience, and proper procedures.

In those cases, the guide can help you suspect the fault and avoid unnecessary part swaps, but the repair should be done by a professional.