Fridge Freezer Not Cold Enough in Arundel - What to Do and What to Ignore

Published September 2026 | Fridge Freezer Not Cold Enough - What to Do

Myth: If the Light Comes On, the Fridge Is Working Fine

The reality

This one is one of the most persistent myths our engineers encounter across West Sussex. The internal light is powered directly from the mains and has absolutely nothing to do with the cooling system. A fridge freezer can have a fully functioning light, a running fan, and even a motor that appears to be humming away - and still fail to reach safe food storage temperatures.

The cooling system relies on a refrigerant circuit - a compressor, condenser coils, an expansion valve, and evaporator coils. The light tells you one thing: the door is open and there is power. It tells you nothing about whether the compressor is reaching the correct operating pressure, whether the refrigerant has leaked, or whether the evaporator is iced over and blocked.

When our engineers run the Voltrade GoFIX diagnostic on a unit that "seems to be running", we regularly find the compressor starting but cutting out within seconds because of an overload relay failure. To the homeowner, the fridge appears operational. In practice, it has not been cooling properly for days.

Myth: Turning the Thermostat to Maximum Will Fix It

The reality

This one is understandable. The fridge isn't cold enough, so you turn the dial up. Logical, right? In practice, cranking the thermostat to its highest setting when there is an underlying fault can cause additional damage - particularly to the compressor.

The thermostat controls how often the compressor runs and when it switches off. If there is already a problem with refrigerant levels, a blocked condenser, or a faulty fan motor, forcing the compressor to run longer and harder under those conditions accelerates wear. You might get a marginal temperature drop for a day or two before the situation gets significantly worse.

The correct approach is to set the fridge to its recommended temperature - typically between 3 and 5 degrees Celsius for the fridge section - and leave it there while you investigate the actual cause. If it cannot reach that temperature at its normal setting, something is wrong that turning a dial will not fix.

Myth: Ice Build-Up in the Freezer Means It Is Working Too Well

The reality

Ice build-up is one of the most misread symptoms in appliance repair, particularly in older Hotpoint and Beko models we see commonly in Arundel and the surrounding villages. Many homeowners see thick frost accumulating in the freezer compartment and assume it means the freezer is at least doing its job properly. It isn't - or at least not properly.

Excessive ice build-up typically means the auto-defrost system has failed. Modern frost-free fridge freezers are designed to run a defrost cycle - usually once or twice daily - where a small heater melts any frost that has accumulated on the evaporator coils. When the defrost heater fails, the defrost timer seizes, or the defrost thermostat gives up, frost accumulates unchecked on the coils.

Here is why that makes the fridge warmer, not colder. As ice builds up around the evaporator coils, it insulates them. The coils can no longer efficiently absorb heat from the fridge and freezer compartments. The result is a freezer packed with ice that still cannot maintain correct temperatures - and a fridge section that is noticeably warmer than it should be. Defrost heater replacement typically costs between 80 and 150 pounds including parts and labour. It is one of the more cost-effective repairs in appliance work, and it is far cheaper than a new unit.

Myth: A Warm Fridge Just Needs a Clean Inside

The reality

Cleaning the inside of your fridge will not affect its cooling performance in any meaningful way. What cleaning does help with - and this is worth doing regardless - is the condenser coils at the back or underneath the unit. These are what homeowners should actually be thinking about, not the shelves.

Condenser coils release the heat extracted from inside the fridge. When they are caked in dust, pet hair, and debris (which is very common in older properties across West Sussex), they cannot dissipate heat effectively. The refrigerant stays warmer than it should, the system becomes less efficient, and internal temperatures rise. On many Samsung and LG fridge freezers, the condenser coils are accessible at the back of the unit. On others, including many Bosch models, they sit at the bottom behind a grille. Vacuuming these coils once or twice a year does improve performance.

The other task worth doing is checking the door seals. A broken or perished seal allows warm, humid air into the fridge constantly. The compressor runs harder to compensate, efficiency drops, and you may notice condensation forming inside the cabinet. Replacement door seals for most common brands typically cost between 15 and 40 pounds for the part alone - and fitting one yourself is one of the few fridge repairs that actually is a reasonable DIY job.

Myth: If the Fridge Is More Than Ten Years Old, Just Replace It

The reality

This gets repeated a lot, usually by people who've just bought a new fridge or are trying to sell you one. The truth is more nuanced. A ten-year-old fridge freezer from Bosch, Samsung, or Hotpoint can absolutely be worth repairing, depending on what has failed and what the repair costs relative to replacement.

The general rule our engineers apply is the 50 percent rule. If the repair cost exceeds 50 percent of the cost of a comparable new unit, replacement makes more financial sense. If the repair is significantly under that threshold - which most common faults are - repair is almost always the better choice. In Arundel and across West Sussex, we see plenty of 12 and 15-year-old units that are fundamentally sound.

The compressor - the most expensive component to replace, typically between 150 and 350 pounds for parts and labour - has a surprisingly long service life when the rest of the system has been looked after. A failed thermostat, a worn fan motor, or a defrost component failure on a well-built unit is not a reason to send it to the tip. There is also an environmental argument. Manufacturing a new fridge freezer carries a significant carbon footprint. Extending the life of an existing unit is commonly the greener choice, particularly if the replacement would just be similarly spec'd.

What Actually Matters - Expert Advice on a Warm Fridge Freezer

When a fridge freezer stops cooling properly, there is a logical order to work through before you call anyone out. Our engineers use the Voltrade GoFIX diagnostic process to narrow down the cause quickly, but these are checks any homeowner in Arundel can run through first.

Work through these steps in order:

1. Check the door seals. Close the door on a piece of paper. If you can pull the paper out easily, the seal isn't gripping and needs replacing.
2. Check the condenser coils. Pull the unit away from the wall and inspect the coils at the back. If they're caked in dust, vacuum them carefully with a brush attachment.
3. Listen to the compressor. It should start, run for several minutes, and then stop. If it starts and stops within seconds repeatedly, or you can't hear it running at all, the compressor or its start relay may be failing.
4. Check the freezer for ice build-up. Heavy frost on the back wall of the freezer compartment typically means the defrost system has failed.
5. Check the fans. Most fridge freezers have one or two fans - one near the condenser at the back, one circulating cold air internally. If either has stopped, cooling will be noticeably reduced within hours.
6. Check the ambient temperature around the unit. During West Sussex's warmer summer months, a fridge in a hot kitchen or utility room may struggle with settings that worked fine in winter. Most fridge freezers have a climate class rating, and placing a unit outside its rated ambient temperature range will affect performance.

If none of those checks reveal an obvious cause, a diagnostic visit is the next step. A qualified engineer can test refrigerant pressure, check electrical components with the right instruments, and identify faults that simply aren't visible to the naked eye. The Voltrade GoFIX process typically narrows down the cause within the first visit, so you're not paying for multiple call-outs to reach a diagnosis.

Myth-Busting Questions

Is it worth repairing a fridge freezer or should you always buy new?

In most cases, repair is worth it if the unit is under 12 to 15 years old and the repair cost is below half the price of a comparable replacement. Common repairs - thermostat, fan motor, door seal, defrost components - typically cost between 60 and 180 pounds including labour. Compressor replacements sit higher, between 150 and 350 pounds, but are still often worth considering on quality units from Bosch, Samsung, or Hotpoint that are otherwise in good condition.

Can a fridge freezer lose its refrigerant and is that something that can be fixed?

Yes, refrigerant can leak - usually from corroded or damaged tubing, particularly in older units. It is fixable, but it is not a DIY job. Handling refrigerants requires specialist equipment and certification. If the system has a small, locatable leak that can be sealed and then recharged, the repair cost is typically between 100 and 200 pounds. If the leak is deep within the sealed system and inaccessible, the economics of repair versus replacement shift considerably and your engineer will advise you accordingly.

The fridge section is cold but the freezer isn't freezing - what does that typically mean?

This pattern - adequate fridge, inadequate freezer - often points to a problem with the sealed refrigerant system rather than the defrost mechanism. It can indicate low refrigerant or a partially failing compressor that can still cool to fridge temperatures but cannot reach the lower temperatures needed for freezing. It can also indicate a damper or airflow fault between the two compartments. A diagnostic visit will clarify which is the case, and the distinction matters because the repair routes are quite different.

Frequently Asked Questions

What temperature should my fridge and freezer be running at?

Your fridge should sit between 1 and 5 degrees Celsius - the Food Standards Agency recommends below 5 degrees for safe food storage. Your freezer should be running at minus 18 degrees Celsius or colder. You can check these temperatures with a basic fridge thermometer, which costs around 5 to 10 pounds from most supermarkets or hardware stores. If your fridge can't hold these temperatures at its normal setting, something needs investigating.

How long should I wait for a fridge freezer to cool down after being moved or after a power cut?

After a power cut, a well-insulated fridge freezer will commonly maintain safe temperatures for several hours, provided you keep the door closed. After moving a fridge freezer, wait at least four hours before switching it on - and ideally 24 hours if the unit was transported on its side. This allows the compressor oil to settle back into the correct position. Switching on too soon can damage the compressor and cause the exact cooling problems this article is all about.

Can I fix a fridge freezer that isn't cold enough myself?

Some checks and basic repairs are within reach for a confident DIYer. Replacing a door seal, cleaning condenser coils, and checking the thermostat are all reasonable to attempt yourself. Anything involving the sealed refrigerant circuit - recharging, tracing leaks, replacing the compressor - must be carried out by a qualified engineer. Attempting to work on a sealed refrigerant system without the correct equipment and certification is both dangerous and illegal under UK regulations.