3 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
B7RCNE40HXBR fresh-food compartment runs near 0°C, freezes food and sheds water from melting ice; recurs on a replacement unit of the same model
An owner complaint naming the exact model code B7RCNE40HXBR: the fresh-food compartment ran near 0°C, froze food, and produced abnormal water from melting ice. The unit was replaced under warranty with a new unit of the same model, which developed the same fault months later. The owner describes it as a recurring bug. Note this evidence is from the Italian market; I found no Turkish-market complaint specific to this exact code.
What to check. Before buying, treat this model's fresh-food compartment and defrost drain as a known weak point: verify the actual fridge temperature (not just the setpoint) early, watch for food freezing in the fresh compartment, and for water pooling from the defrost cycle. Because the fault recurred on a replacement unit, a single service visit may not be conclusive — keep records and push for a lasting fix or exchange if it repeats.
Beko no-frost builds up frost/ice and leaks water from below despite fan and gasket replacements
A Turkish-market complaint on Şikayetvar about a Beko no-frost model (K83720NE): persistent frost/ice buildup in the freezer, a noise, and intermittent water leaking from below, which persisted after a motor change and after the service first blamed the fan then replaced the gasket. This is a family-level Turkish no-frost claim, not specific to the B7RCNE40HXBR code.
What to check. This shows the Turkish-market pattern for Beko no-frost units: frost/ice buildup with water leaking from below, and service visits that blame different parts (fan, gasket) without resolving it. A buyer should not assume a single part swap fixes it, and should keep a record of repeated visits.
Beko no-frost freezes behind the back plate and leaks water out the door, recurring yearly
A consumer complaint about a Beko no-frost fridge (model not specified): ice formed behind the back plate, blocked the defrost drain, and water leaked out the door; it recurred at the same time of year across three consecutive years. This is a family-level no-frost claim, not specific to the B7RCNE40HXBR code.
What to check. For any Beko no-frost unit, expect that frost can build on the rear evaporator and block the defrost drain, causing water to leak out. This is a recurring pattern rather than a one-off, so a buyer should check the drain area periodically and not assume a single repair is permanent.
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 Refrigerators catalog, version 0.1.1, under the CC-BY-SA-4.0 license.