Daikin NDJ Smart Premix Combi Constantly Fails With J6-01 Error

I purchased a Daikin NDJ Smart Premix combi from Daikin’s own website, and the device has been causing constant problems for the last 2 years. It will be 3 years in 2 months since we bought it, and for about 2 years we have been experiencing frequent malfunctions. We have to call service at least twice a year, and the issues vary, but the most frequent one is the J6-01 error code. Despite repeated service visits, the problem keeps recurring and the combi does not work reliably. This situation has caused us serious financial and emotional damage. A Daikin customer service representative told me that when I explained the situation, engineers would examine the combi and that if it was defective, it would be replaced. However, nothing like this happened and the product that has been malfunctioning constantly since the day we bought it has never been changed. In addition, the teams that come for service not only demand payment on every visit, but also generally state that they do not have an invoice system, and therefore I have never been given any invoice or proper documentation after the visits. I have called Daikin customer service many times, written through the complaint section on Daikin’s website, and submitted several complaints on Xolvie, but I have not received any satisfactory or permanent solution, and most of the time I did not even get a proper response. I live in Kaynarca, Sakarya, and I continue to experience the same problems with this combi. Considering the continuous faults over a long period, the recurring J6-01 error, the lack of proper documentation from the service teams despite charging fees, and the financial and psychological distress this has caused, I request that my Daikin NDJ Smart Premix combi, which I bought from Daikin’s official website, be completely replaced with a new and fault‑free device. I kindly ask for a permanent solution and a clear response as soon as possible.