The short answer
A Beko F cabinet that is not holding temperature is a single model code with a cooling surface on its rear wall, and that changes what a healthy cabinet looks like inside. Dew or a light frost pattern on the back wall that clears between cycles is the system working; a permanent sheet of ice on the same wall is the fault, and the two are easy to confuse.
What you observe
- A permanent sheet of ice on the rear wall — The cooling surface is insulated from the compartment by its own ice.
- Dew or light frost that clears between cycles — Normal behaviour on this platform, not a fault.
- The compressor runs almost continuously and the cabinet is still warm — Heat is being made and not rejected, or cold is not reaching the compartment.
- Food frozen where it touches the rear wall — The setting is too cold, or a package is resting on the cooling surface.
- NEAR MISS - silent and warm — Nothing is running, which is a supply or start-relay fault.
Causes, most likely first on this family
- Ice layer on the rear cooling surface that never clears — First on this platform, because the wall cannot cool the compartment through its own insulation.
- Food stacked against the rear wall — Second, and genuinely common: packages resting on the cooling surface hold moisture against it and stop it clearing.
- Door gasket not sealing along its full height — Third, and usually alignment rather than wear.
- Condenser starved of room air — Fourth. A cabinet pushed into an alcove recirculates its own heat.
- Thermostat or sealed-system fault — Last, and the only pair needing instruments.
Check in this order, and why
- Look at the rear wall and decide whether the ice clears — First, because a clearing bloom is normal and a permanent sheet is the fault.
- Pull everything back off the rear wall — Second, and free. A packed compartment prevents the surface clearing and mimics a failure.
- Test the gasket with paper at the bottom corner and the top — Third. Grip at the top with release at the bottom is a racked door.
- Pull the cabinet clear of the wall for a day — Fourth, and the step that matters when the cabinet is barely cooler than the room.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Never chip ice off the rear wall with a knife or screwdriver - on this design the cooling circuit runs immediately behind that surface and a puncture ends the cabinet. Let it thaw with the door open.
Models in the F family
Reference| Model number | Family key |
|---|---|
| F70420NE | beko:refrigerator:f |
When to call a technician
Call once the wall clears, the gasket seals and the cabinet has air, and it still will not hold temperature, because what remains is the thermostat or the sealed system. Call immediately if you see oil at the compressor or smell burning.
Other faults covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
