Frequency conversion air conditioner and condensation prevention control method thereof

The invention discloses a frequency conversion air conditioner and a condensation prevention control method thereof. The method comprises the steps of S1, performing refrigeration startup; S2, judgingwhether a compressor continuously runs for first duration or not, and if no, entering in a common refrigeration control mode; S3, if yes, judging whether indoor environment temperature T1 and outdoorenvironment temperature T4 meet the condition that the indoor environment temperature T1 is larger than or equal to 24 DEG C and smaller than or equal to 30 DEG C, and the outdoor environment temperature T4 is larger than or equal to 24 DEG C and smaller than or equal or 30 DEG C or not; S4, if yes, judging whether the rotating speed of an indoor fan is k times smaller than rated rotating speed or not, wherein k is taken from 50 to 60%; and S5, if yes, entering in the condensation prevention control mode, and under the condensation prevention control mode, through comparison of the range of the temperature difference