I am really frustrated that every time I disassemble the electrical unit for cleaning and then reassemble it I always get the A1 code? Then THE UNIT WONT POWER UP FOR SOMETIMES 10-24 HOURS? I follow the descaling process mentioned in the manual. WHAT IS THE SECRET IN POWERING BACK WITHOUT GETTING THIS A1 ISSUE??is this a manufacturing glitch? Are you guys working on fixing this issue? What causes the problem ? I bought the unit {element a2} from Amazon about 3 mos ago.I understand your warranty is for 5 years. Please respond promptly. Thank you. User's recommendation: Do not buy this humidifier unless Virnsdo fixes the problem!!