Totally Unusable AC Remote

We are still not able to figure out what the heck is all those buttons for ? Till today nobody from my family knows how to operate this remote..... I must say totally unusable remote. It has temperature control (OK that's easy) but what about fan, economy mode, timer setting, Low Cool, high Cool mode.

Though the AC has all wonderful features but what is the use of keeping these things when people are unable to memorize it. Even now if I do not use the AC for some months I keep forgetting on how to set time?

Gosh these AC people desperately need hire some User Experience guys ASAP, especially Voltas...