How does the sleep mode work?Updated a year ago

When entering sleep mode in cooling mode, the temperature will rise by 2°F after a one-hour operation, and keep increasing by 2°F each hour. Then, the unit will stay when reaching the upper-temperature limit, 86°F. For example, if the original set temperature is 85°F, after an hour, it can only reach 86 but not 87, and then stay at this temperature.