4 of us work in a small office and have had Mitsubishi N623 model recently installed. Just trying to monitor the temperature but don't have the manual. Can you provide a few tips? On days like today (i.e. low 20's), we've tried 'fan' option but it gets too hot. Then we've tried 'dry' option. What does this do? Generally we use 'Auto' option which is fine, but we don't always want to use this but rather the other options which I understand does not use as much electricity. Your thoughts?