3 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
Samsung Luzon Dual Split outdoor unit electronic board burned out twice (C203), EU market
An EU consumer's public complaint to Altroconsumo (Italy) documents a Samsung Luzon Dual Split outdoor unit (AJ040TXJ2KG/EU) that locked up with error C203 and was found to have a burned electronic board, replaced at €341.50, then burned out again with the same C203 code only 8 months later. Samsung refused warranty coverage for the replacement board.
What to check. In the EU market, the outdoor unit's electronic board is a documented recurring failure point on the Samsung Luzon split series, with a repeat failure within months and a several-hundred-euro repair cost; factor that into the running cost and warranty expectations.
Samsung split AC outdoor main board (PBA) fails right after the 2-year warranty, ~300,000 KRW repair (Korea market)
Korean news reporting documents a wave of Samsung split AC owners hit by the C101 indoor-outdoor communication error, many exactly when the 2-year free-service period ended, with the service center quoting about 300,000 KRW to replace the outdoor main board (PBA). This is Korea-market evidence, outside the TR/EU scope, but it documents the same outdoor-board failure pattern and its cost.
What to check. Outside the TR/EU scope but relevant as a pattern: Samsung split AC outdoor main boards are documented to fail around the end of the 2-year warranty, with a costly board replacement; check the warranty length and consider it when budgeting.
Samsung split AC indoor unit and pipes sweat and drip water (Turkish owner forum)
A Turkish owner forum thread reports a Samsung split AC that has dripped and sweated heavily on the drain pipe and indoor refrigerant lines since day one, with replies pointing to installation leveling and drain slope as the likely cause.
What to check. Heavy condensation and dripping on a Samsung split AC is commonly an installation issue (unit not leveled, drain pipe lacking slope) rather than a defect; get the installation checked before assuming a faulty unit.
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 conditioners catalog, version 0.1.1, under the CC-BY-SA-4.0 license.
