Hi,
I may be misunderstanding - but this HP7A model never seems to switch off or resume from standby when in auto mode. Should it? I press auto on the remote, there is a white letter “A” on the LCD next to the fan. The fan speed does vary depending on about of pollutants. However, it carries on indefinitely even when the pollutant level is zero. Should it not then go into standby? Also, when i do put it in standby, the manual says it continues to monitor air quality. However, it never resumes from standby unless I do it manually. Is this a fault or is something wrong with what I am doing? Note I am not running it in temperature mode - Hence it is not trying to heat/cool the room at the same time. It is just used in fan mode ONLY, and yet never seems to switch off/on automatically. This happens in a sealed room as well, with the doors closed it is only working on the air in the room.