I believe it is because the lamps are cfl and the control module is getting the neutral through the electronic circuitry.
Fluorescent bulbs flicker in ceiling fan.
Some tubes will flicker till they burn in but it is minor.
The ceiling fan remote receiver causes the flourescent lights to flicker.
After discussing this with emerson technical support i learned that the remote receiver controls the lights using a pulse width modulated signal basically a dimmer switch.
However in most cases it is very annoying and disturbing.
To eliminate flicker just match the frequency of the bulb with the correct frequency achieved by top quality ballast and don t use cheap bulbs.
I hope you ve researched like takabanana did regarding the bulbs and switches used in the fan.
This method works fine if the bulb were a standard.
The intensity of the flicker effect may vary depending on the situation.
If you re able to verify that the ceiling fixture is the only one flickering get a ladder and try tightening the light bulb.
They advised using only incandescent bulbs in the fixture because of this feature.
Here are a few suggestions for what you can do to fix the problem.
What you are describing almost sounds like a thermal overload in the ballast.
However if this is isn t your problem there could be a loose and or bad connection in the wiring.
After switching to leds or when replacing a faulty led lamp in some cases the led light will start flickering.
To stop the flickering the root cause must be found first.
If the light on your ceiling fan light is flickering it s a good idea to check it out sooner rather than later because it may be an electrical problem.
With the ballast uncovered run the light till they flicker then carefully check if the ballast is too hot to test.
Some cfl and led bulbs as you may not know can flicker if they aren t dimmable and are on a dimmer.
Gu24 light bulb 4000k daylight a19 led bulb for ceiling fan cotanic 2 prong light bulbs with gu24 twist in lock base 9w 60w cfl replacement 900lm non dimmable 4 pack 5 0 out of 5 stars 12 11 99 11.
That may be all you need to do but if the bulb still flickers remove it and try another bulb.
Double check your wiring connections just to make sure however i have a light fixture that is controlled by a motion.