Beko Refrigerator Error Code E4
The defrost heater circuit has failed, so ice builds up on the evaporator until airflow and cooling suffer and the fan may start striking the ice.
Also shown as: E04
Applies to: Beko American-style side-by-side and multi-door fridge freezers with a display, ASD (Cosmos) series and similar models
Common causes
- Defrost heater open circuit
- Failed defrost fuse or thermal cut-out
- Damaged heater wiring
- Faulty control module
What to check, in order
- Look for thick frost on the freezer back wall and listen for the fan catching on ice.
- A full manual defrost (empty the freezer, switch off for 24 hours with the doors open) restores cooling for a while and confirms the defrost system is at fault.
- Heater continuity testing and replacement is a technician job.
Clear the code and test
- Fix what the checks above found first — a vent cleared, the doors sealing again, the coils cleaned. Clearing the code without fixing the cause only brings it back.
- Plug the fridge back in and make sure both doors close fully.
- Leave the doors closed and give the fridge time: check after about an hour whether the code has gone and the temperature is dropping again.
- If the code is still showing after a few hours, or the temperature is not recovering, write the code down before calling a technician — it speeds up the diagnosis.
When to call a professional
This code usually points to a faulty part, wiring or the control board on a Beko refrigerator. Run the checks above to rule out the simple causes, then book a technician — and book one straight away if any of these apply:
- The code comes back after you have run the checks and a test cycle.
- You smell burning, see sparks or scorch marks, or the breaker trips.
- Water is leaking and you cannot stop it.
- The fix needs panels opened beyond what your manual describes, or a part tested with a meter, and you are not set up for that.
When you call, give the brand, the code E4, your model number (on a label inside, on the side wall) and the checks you already ran. It shortens the visit.
Repair or replace?
This fault is in professional territory: the fix usually means a major part or board-level work, and the labour adds up. If your machine is already well into its service life, get the repair quote first, then compare it with the price of a current equivalent model before you decide. Paying a large share of a new machine's price to repair an old one is rarely the better deal; replacing a machine over one cheap fault is wasteful too.
Parts that may be involved
Defrost heaterThermal fuseControl module
Parts are model-specific. Find your model number first — usually on a label inside, on the side wall — and match the part to that number before ordering.
Questions people ask about E4
What does E4 mean on a Beko refrigerator?
E4 means: Defrost heater error. The defrost heater circuit has failed, so ice builds up on the evaporator until airflow and cooling suffer and the fan may start striking the ice.
Can I fix Beko E4 myself?
Only the preliminary checks. Code E4 usually means a part, wiring or the control board has failed, which is a technician job. Run the checks to rule out simple causes before you book.
How do I clear Beko E4?
Fix what the checks above found first — a vent cleared, the doors sealing again, the coils cleaned. Clearing the code without fixing the cause only brings it back. Plug the fridge back in and make sure both doors close fully. Leave the doors closed and give the fridge time: check after about an hour whether the code has gone and the temperature is dropping again.
Sources checked
The meaning and checks for this code were checked against the sources above in November 2026. Codes vary by model and region; if your manual lists a different meaning for your exact model, follow the manual.