I have a low profile ceiling fan with light and remote control connected to a simple standard on/off light switch and i decided to replace it with Kasa HS200 but when installing the fan/light power flickers.  It is like the fan is switching between on/off all the time.  I decided to try the Kasa KS240 and the same issue.  Has anyone else experience the same issue?  It is like the Kasa is interfering with the fan/light remote control unit.

All I need is the ability to turn on or off the unit and continue controlling it with its own remote.

Thanks, I will appreciate any help.