My kid's room Split AC

Today I inspected the 0.9T Hitachi evaporator, water tray and the impeller, found dusty slime in the tray, impeller with dust layer and minor deposits on the evaporator fins. I could smell moulds. I removed the minor deposits from the fins with the aid of fine metal brush and it worked wonders. Fins cleaned with diluted dettol and Tray was removed, thoroughly washed, disinfected. Drain line blown through too of slime deposits. Attached are the pictures of AC that was last cleaned 5 years ago.
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