Peace, mercy, and blessings of God be upon you. I have 2 split air conditioners, 30,000 BTU each. Used for only one month since the shop opened. Purchase date was 12/25. I have the invoice and warranty. The air conditioner brand is Home Queen, equipped with Wi-Fi technology and self-cleaning feature. I have excellently summarized the operation and maintenance manual. This information is very useful for users, and here is a confirmation of the key points you mentioned: 💡 Additional features for the air conditioner (as requested): Smart Control (WIFI): Allows you to operate the air conditioner and cool the house before arriving via the phone app. Self-Cleaning: This feature dries the internal evaporator to prevent mold and unpleasant odors. Additional maintenance tips: Outdoor unit: Ensure the outdoor unit (compressor) is kept away from obstructions to ensure good ventilation. Annual inspection: It is preferable to perform comprehensive maintenance (refrigerant check and deep cleaning) before the start of summer. This manual is a quick and useful reference for Home Queen air conditioner users. For sale to the highest bidder WhatsApp