Finding ice crystals on lettuce or a frozen yoghurt that was supposed to sit at 3°C points to a genuine temperature regulation fault. In some cases the fix is immediate – a dial that's been turned too cold, or food pressed against a vent. In others it points to a component failure that needs a technician.
National Appliance Repairs services fridges and freezers across Australia, with same-day callouts in Melbourne, Sydney, Brisbane, Perth, and Adelaide.
The Normal Temperature Range for a Fridge
A fridge compartment should sit between 2°C and 4°C. If you're unsure what yours is actually running at, place a glass of water on the middle shelf for 24 hours and measure it with a cooking thermometer.
Causes of a Fridge That's Freezing Food
| Cause | Can I Fix It? |
|---|---|
| Temperature set too cold | Yes – adjust the dial |
| Food placed directly in front of air vents | Yes – reposition items |
| Faulty or stuck air damper | No – technician required |
| Failed thermostat | No – technician required |
| Faulty thermistor (temperature sensor) | No – technician required |
| Leaking door seal causing continuous running | Partly – seal replacement |
| Main control board fault | No – technician required |
Step 1: Check the Temperature Setting
The most straightforward cause – and one worth ruling out first – is a temperature control that's been turned up accidentally. Dials and digital controls on fridges are often adjusted without the owner realising, particularly in shared households. The ideal setting varies by brand and model, but for most Australian fridges the manufacturer's recommended fridge temperature is around 3–4°C (or the mid-point of an unmarked dial).
Adjust the setting, then wait 24 hours before checking the temperature again. Fridges don't respond instantly to a dial change – they need a full defrost-and-cool cycle to stabilise at the new setting.
Step 2: Check What's Touching the Air Vents
Cold air enters the fridge through vents at the rear wall or top back of the compartment. Items packed directly against these vents receive a concentrated blast of air that's significantly colder than the rest of the fridge – vegetables and moisture-rich foods are the most common casualties. Rearrange the contents so nothing is pressed against the vent panel. In the crisper drawers, vent position varies by model; check your user manual if you're unsure where they sit on your specific fridge.
Step 3: Suspect the Air Damper
The air damper (also called the damper control or baffle) is a small motorised or mechanical flap that regulates how much cold air flows from the freezer compartment into the fridge section. It opens and closes in response to the fridge's thermostat to maintain the correct temperature. When the damper gets stuck in the open position, the fridge compartment receives a continuous, unregulated blast of freezing air – regardless of what the thermostat is telling it.
A stuck-open damper is one of the most common mechanical causes of a fridge that's freezing food. It sits at the top rear of the fridge compartment behind a plastic vented cover, and when it fails in the open position, cold air flows from the freezer into the fridge section continuously – regardless of the temperature setting. If food freezes at every position in the fridge and turning the dial down makes no difference, a stuck damper is the likely culprit. This is a professional repair.
Step 4: Suspect the Thermostat or Thermistor
The thermostat and thermistor work in sequence. The thermistor reads the fridge temperature and passes that reading to the thermostat, which uses it to decide when to stop the compressor. A thermistor that's reading warm when the fridge is actually cold sends a false signal, and the compressor keeps running in response. A thermostat that has failed in the on position bypasses the thermistor entirely and runs the compressor without stopping.
Both produce the same result: a fridge that never quite reaches the "stop" instruction and gets progressively colder. Test by turning the dial to its warmest setting – a working thermostat should click the compressor off within a few minutes. If it keeps running, the thermostat has failed.
Step 5: Inspect the Door Seal
Warm air leaking through a compromised seal gives the thermostat a constant reason to keep the compressor running. In an Australian kitchen during summer, even a small seal gap can cause the compressor to run almost without pause, driving the compartment temperature well below the set point.
Test the seal with a piece of paper in the closed door – it should hold with light resistance. Check the full perimeter for cracks, flattening, tears, or sections that have detached from the door. Replacement gaskets are available for most major brands and clip into place without specialist tools.
Frequently Asked Questions
Why is my fridge freezing food but the freezer is fine?
That specific pattern – freezer normal, fridge too cold – almost always points to a stuck-open air damper letting cold air flow from the freezer into the fridge section unchecked. A faulty thermistor reading the fridge as warmer than it is can produce the same result.
What temperature should a fridge be set to in Australia?
3–4°C covers most households. Food Standards Australia New Zealand puts the safe upper limit for perishables at 5°C – below that, bacterial growth slows significantly.
How do I stop my fridge from freezing food?
Turn the temperature setting down first, then check that nothing is blocking or sitting directly against the rear air vents. Still freezing after both? The thermostat, thermistor, or damper needs a technician to diagnose.
Can a faulty door seal cause food to freeze?
Indirectly, yes. A seal that isn't making full contact lets warm air in constantly, which keeps the compressor running far longer than normal and can push the fridge below freezing. Check the full perimeter and replace the gasket if you find cracks, tears, or sections that won't hold a piece of paper in the closed door.
How long does it take for a fridge to stabilise after changing the temperature setting?
Give it a full 24 hours and keep the door openings to a minimum – every time the door opens, warm air enters and the fridge has to work back down to temperature again.
Book a Repair
Temperature setting and vent clearance are quick checks anyone can do at home. If food is still freezing after both are addressed, the fault lies with the thermostat, thermistor, damper, or door seal – all of which need professional diagnosis.
National Appliance Repairs services fridges from all major Australian brands across Melbourne, Sydney, Brisbane, Perth, and Adelaide. Upfront pricing, genuine parts, and a 12-month warranty on components. Call 1300 434 380 or book online.
