Model compatibility has not been independently verified
Earlier archive data contained suggested model or series names. Without a clear model/code table in a manufacturer manual, these names are no longer displayed as verified matches.
This is general brand/device guidance; check the model label and official manual.
Open manufacturer sourceWhat does this display message mean?
This message may be routine maintenance rather than a breakdown.
Source scope: Compatibility with specific model numbers has not been established. Always check your exact appliance manual.
Documented model/series: 18321 (Nisan 2017 üretimi). Evidence: Arçelik destek sayfası; fan seviyesi belirli model/üretim dönemi için. Codes can mean different things on other models. This does not establish a failed part.
Open manufacturer sourceWhat can you try?
- 01
Identify the exact code and model
Photograph the Arçelik display showing CO and the product model label. The cited manufacturer evidence covers: 18321 (Nisan 2017 üretimi). Do not assume other models use the same code meaning.
What the result means: If your model differs, consult its specific manual before acting on the guidance.
- 02
Check Auto Clean mode
If CO appears after turning the unit off, Auto Clean may be running for about 30 minutes. Check the AUTO CLEAN button on the remote.
What the result means: If the display clears and operation is normal, this is usually a status indication.
- 03
Cancel using your model remote
Press AUTO CLEAN again if your manual supports it; do not dismantle the unit.
What the result means: Persistent cooling trouble needs diagnosis.
Stop immediately for leaks, smoke, burning smell or electrical danger. For gas leaks, leave the area and call local emergency services.
How do you actually fix this?
Start with safe checks. Some codes have no safe home fix; in that case we explain what the professional repair actually involves.
Practical fixes you can try
- Use your exact manual to distinguish a fault from an operating mode or maintenance reminder.
- For fan-speed, auto-clean, test or showroom indicators, return to a normal mode using the controls in the manual. No part replacement is implied.
If it persists, how is it actually repaired?
An informational indication usually needs no repair. If it remains after the specified maintenance, a technician verifies the counter or detection logic before considering any part repair.
How do you know it is fixed? The indicator should clear on returning to normal mode or after the manufacturer-prescribed maintenance reset.
Safety and warranty: Warranty terms depend on manufacturer, model and local law. Damage caused by unauthorised disassembly or improper repair may be excluded. Live electrical work, gas, refrigerant circuits and sealed cabinets require qualified professionals; this is not a DIY instruction for those tasks.
Evidence: The manufacturer link above supports the broad code meaning. The repair pathway is a general technical diagnostic explanation, not a confirmed failed-part diagnosis for every model.
Manufacturer source
Independent safety-focused explanation with a manufacturer link. Possible causes are not verified part diagnoses; the code may vary by model or region.
Open original manufacturer guidance ↗