If your refrigerator is making a clicking noise and not cooling, it usually means a critical component is trying to start but failing.
This is a common issue in many US homes — and in many cases, you can diagnose and fix it yourself. In this guide, you’ll learn why your fridge is clicking and the exact fixes that work.
System Diagnosis
A clicking sound usually comes from the compressor trying to start. Common causes include:
- Faulty start relay (most common)
- Overloaded compressor
- Dirty condenser coils
- Power supply issues
- Failed compressor
The start relay is the #1 cause in most cases.
The DIY Fixes
Check the Start Relay
The relay helps start the compressor. Signs of failure include repeated clicking every few seconds, the fridge not cooling, and the compressor refusing to run.
- Unplug the refrigerator.
- Locate the relay near the compressor (back of fridge).
- Remove and shake it gently.
- If it rattles, it’s likely faulty.
Clean Condenser Coils
Dirty coils trap heat and can overload the entire system.
- Locate coils (back or bottom).
- Use a long brush or vacuum attachment.
- Remove all trapped dust, pet hair, and dirt.
Check Power Supply
Inconsistent power can cause the compressor to click instead of properly firing up.
- Ensure fridge is plugged securely into the wall.
- Avoid using extension cords or cheap power strips.
- Check the main circuit breaker.
Let the Compressor Cool Down
Overheating can trigger an internal safety switch, causing clicking sounds.
- Unplug the fridge for 30–60 minutes.
- Plug it back in and test if the compressor starts.
Check Compressor Condition
If swapping the start relay doesn’t work, the compressor itself may be locked up.
- Loud clicking continues indefinitely.
- Absolutely zero cooling happens.
- Compressor feels extremely hot to the touch.
🧠Pro Tips to Prevent This Issue
- Clean coils regularly to ensure maximum airflow.
- Ensure proper ventilation space around the back of the fridge.
- Avoid completely overloading the compartments.
- Use a stable, direct wall power supply.
❓ Frequently Asked Questions
Why does my fridge keep clicking but not turning on?
This is almost always due to a faulty start relay failing to send a jolt of power to the compressor, or the compressor mechanics have seized up.
Is it safe to keep it plugged in?
No — unplug it immediately to prevent further electrical damage or severe overheating.
Final Thoughts
If your refrigerator is making a clicking noise and not cooling, start by checking the start relay — it’s the most common and easiest fix. Fixing it early can save you from buying a whole new appliance.