4 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
Internal wiring failure documented in official Xiaomi Turkey FAQ for Pro 4L
The official FAQ describes a scenario where the unit runs (motor active, hot air blowing) but the display is blank, and attributes this to faulty internal wiring requiring service.
What to check. If the fryer heats and runs but the screen stays blank, the internal wiring harness is suspect per Xiaomi's FAQ. This is a high-severity electrical fault — stop using the unit and seek service, as it involves internal mains-voltage wiring.
Door-control function failure blocks operation on Pro 4L (official FAQ)
The official FAQ describes a scenario where the unit refuses to run, displaying 'close the pot to continue' even when the basket is correctly seated — the door-control function is faulty and requires after-sales service.
What to check. If the fryer shows the 'close the pot' error with the basket fully seated, the door interlock sensor is faulty. This is a service-level fault per Xiaomi's own FAQ; it will stop the unit from running entirely.
OLED screen failure documented in official Xiaomi Turkey FAQ for Pro 4L
The manufacturer's own Turkish troubleshooting FAQ for the Pro 4L instructs users to contact after-sales service when the unit powers on (audible tone) but the OLED screen shows nothing — a documented screen-failure mode.
What to check. If the unit hums/beeps but the OLED display is blank, the screen is faulty and requires service — there is no user fix. This is a known failure path per the manufacturer's own FAQ, so budget for an out-of-warranty repair if it occurs after the guarantee.
Setting button (ayar tuşu) time-skipping fault on Smart Air Fryer Pro 4L
Same owner complaint as the rust finding; the control button skips time values, indicating a control-board or encoder fault.
What to check. If the time setting jumps or skips values, the control knob/encoder is faulty. This appeared alongside the rust issue within warranty on the same unit, so test the controls early and treat any control fault as warranting service or exchange.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.
Text from the Kriko Air fryers catalog, version 0.1.2, under the CC-BY-SA-4.0 license.
