Denys Mitchell Key Takeaways
- A compressor you can hear is doing its job; the failure is usually further along the loop.
- Cold at the rear panel with a warm cabinet is the evaporator fan signature, and the fridge posts E5 for it.
- Hot condenser coils with no air movement point at the condenser fan and E6, not at the compressor.
- Ice jamming the evaporator fan blade is a defrost problem in disguise — replacing only the fan buys months, not a repair.
- EF is a food safety alarm, not a component fault: above 41 °F for more than two hours, discard the perishables.
The Bottom Line
Feel where the cold is before you assume the worst. Cold at the back panel and a warm cabinet is a fan and airflow problem; total silence from the compressor is the one failure that changes the arithmetic.
"You can hear it running, but nothing is cold." That one sentence sends more people looking up the Asko refrigerator compressor than any other, and it is usually the wrong place to start. A compressor you can hear is a compressor that is working. The cold it produces still has to reach your food, and most of the time the failure is somewhere along that second half of the journey — at the evaporator, at one of the two fans, or at the sensors that decide when to run them.
| What you notice | Which side of the system | Code it may post | What it points to |
|---|---|---|---|
| Compressor audible, cabinet warm, back panel cold | Evaporator side | E5 | Evaporator fan not circulating air |
| Back of the fridge cold, front and door warm | Evaporator side | E5 | Cold air pooling, no distribution |
| Squealing or grinding from inside the cabinet | Evaporator side | E5 | Fan motor bearings failing |
| Cabinet warm, coils and grille hot to the touch | Compressor side | E6 | Condenser fan not shedding heat |
| Compressor runs constantly and never cycles off | Compressor side | EF | Heat is going in faster than it comes out |
| No sound from the compressor at all | Compressor side | EF or none | Start relay, overload, or the compressor itself |
What the Compressor Actually Does
A refrigerator does not make cold. It moves heat out of the cabinet and dumps it into your kitchen, and it uses a closed loop of refrigerant to carry it. The compressor is the pump in that loop. It squeezes the refrigerant, which makes it hot, and pushes it out to the condenser coils at the back or underneath, where a fan blows that heat away.
The refrigerant, now cooler and under pressure, passes through a narrow restriction and expands into the evaporator — the finned coil hidden behind the rear panel of the freezer compartment. Expanding makes it cold, and it absorbs heat from the metal fins. A second fan, the evaporator fan, blows cabinet air across those fins and sends the chilled air into the compartments. Then the refrigerant goes back to the compressor and the loop repeats.
Why the Evaporator Side Fails First
The compressor is a sealed motor that spends its life in an oil bath. The evaporator fan is an exposed brushless motor sitting in a compartment that frosts and defrosts, frosts and defrosts, for a decade. It is not a close contest, and the service history of these machines reflects it.
E5, the evaporator fan fault, has a signature almost nobody misreads once they know it. The compressor is running, you can feel cold air right at the rear panel, and the rest of the fridge is warm. Cold is being made and is going nowhere. Three things produce it:
- A burned-out or seized fan motor. After years of running, the bearings give up — often after weeks of squealing that the household stopped noticing.
- Ice jamming the blade. Frost builds up around the fan until the blade physically cannot turn, the motor stalls, and the board logs the fault.
- A loose connector or broken wire. The harness between the fan and the board runs through a compartment that is repeatedly cooled and warmed.
Ice around the blade is worth understanding, because it is a symptom of something else. Frost only accumulates there when the defrost cycle is not doing its job, which means the real fault may be the defrost sensor. That is why replacing the fan and leaving the rest alone so often buys a few quiet months rather than a repair.
When the Compressor Side Really Is the Problem
Two situations move the suspicion to the other end of the loop. The first is a cabinet that is warm while the condenser coils and the grille are noticeably hot, which points to E6, a condenser fan fault. Heat is being pumped out of the cabinet and then left sitting against the coils because nothing is blowing it away. The compressor works harder, runs longer, and eventually the cabinet loses ground anyway.
The second is silence. No hum, no vibration under your hand on the cabinet, and a compartment that is drifting up toward room temperature. That is a start relay, an overload protector, or the compressor motor itself, and it is the one genuinely expensive failure in a refrigerator. Either way the fridge will eventually raise EF, the high temperature alarm, which is a food safety warning rather than a component fault: the cabinet has been too warm for too long, whatever the reason.
What You Can Check Without Tools
Some of this you can narrow down yourself in ten minutes, and it makes the eventual service call much shorter.
- Put your hand near the rear panel. Cold there and warm everywhere else is the evaporator fan signature.
- Listen with the doors shut, then open one. The evaporator fan normally stops when you open the door. If the sound never changes, it was not running to begin with.
- Feel the condenser area. Warm is normal; hot with no air movement points at the condenser fan.
- Look for frost patterns. Heavy ice on one part of the rear panel and none elsewhere means a defrost problem feeding the fan fault.
- Use a thermometer, not your hand. Above 41 °F in the fresh food compartment means the food is no longer safe, whatever the display says.
If the compartment has been above that mark for more than two hours, discard the perishables. That decision does not wait for the repair, and our guide to an Asko refrigerator that is not cooling goes through the rest of the sequence.
Getting It Diagnosed Properly
Neither side of this is homeowner work. The evaporator sits behind a panel held by fasteners, insulation, and a wiring harness, and the sealed refrigerant circuit requires certification to open at all. What a technician brings is the ability to tell a fan fault from a defrost fault from a sealed-system fault in one visit instead of three.
The site lists evaporator fan work from $180, and sealed-system work is the tier above that. The final price is confirmed after the on-site diagnosis, and you receive a written estimate before any work begins. Our Asko refrigerator repair service covers the fans, the sensors, the defrost circuit, and the compressor side together.
Tell us what you heard and where you felt cold — those two answers usually place the fault before anyone opens the cabinet. You can book a visit or send us the details.