Quick Answer
Before calling a technician, check these seven things in order: the thermostat setting, door seals, condenser coils, airflow inside the fridge, the power connection, the defrost drain, and any error codes on the display.
Some of these checks take less than two minutes and resolve the problem without any tools or parts needed.
Not every fridge cooling problem needs a technician. Some of the most common causes have a genuine two-minute DIY fix — and ruling these out first can save you an unnecessary call-out.
Run through these seven checks in order. If the fridge still isn't cooling properly afterwards, the fault is internal and it's time to call a licensed technician.
7 Checks Before You Call a Technician
- Confirm the thermostat hasn't been accidentally bumped to a warmer setting
- Check door seals for gaps, tears, or food debris preventing a full seal
- Inspect and clean the condenser coils on the back or underneath
- Make sure vents inside the fridge aren't blocked by food packed too tightly
- Check the power cord and outlet — try a different outlet if unsure
- Look for ice build-up around the defrost drain at the back of the freezer
- Note any error codes on the display panel for the technician
The Door Seal Test
Close the door on a piece of paper or a $5 note so half is inside and half is hanging out. If you can pull it out easily, the seal isn't gripping properly and cold air is escaping — this alone can stop a fridge from reaching temperature even though every other component is working fine.
When These Checks Don't Fix It
If you've gone through all seven checks and the fridge is still warm, the fault is most likely a fan motor, a refrigerant leak, or a failing compressor — all of which require a licensed technician to diagnose safely.
Frequently Asked Questions
What's the first thing to check when a fridge stops cooling?▼
Start with the thermostat setting and door seals — these are the two most common causes that don't require any parts or tools to fix.
How do I know if my fridge door seal is faulty?▼
Close the door on a piece of paper so it's half in, half out. If it slides out easily, the seal isn't gripping properly and should be cleaned or replaced.
Can dirty condenser coils really stop a fridge from cooling?▼
Yes — dust-clogged coils are one of the most common causes of poor cooling and are responsible for a significant share of all fridge call-outs.
When should I stop checking and call a technician?▼
If you've checked the thermostat, seals, coils, airflow, power and drain and the fridge is still warm, the fault is internal and needs a licensed technician.
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Dishank Patel
Lead Technician & Founder · DP Electric Melbourne
Dishank Patel has over 10 years of hands-on experience repairing household appliances across Melbourne's eastern suburbs. He holds all required Victorian electrical and gas licensing and has personally repaired thousands of appliances across brands including Bosch, Miele, LG, Samsung, and Fisher & Paykel.