I installed a Harbor Breeze fan in my kitchen about 2 1/2 years ago. Everything worked fine until a couple of days ago. It is installed so that the wall switch turns everything on then you control the fan and lights from pull switches on the fan. In the winter we just leave the pull switch for the light on and that for the fan off. When you turn on the wall switch the light comes on. Now when you do that the lights blink on and off on about a 1 second frequency. Until today this did not happen when we used the pull switch to turn the light on and off, but now it blinks also. Nothing else has changed.

We thought the wall switch might be bad or have a bad connection. Changed it but lights still blinking. Any ideas?