I recently bought a Harbor Breeze, 52 in Triton Ceiling fan, Model 192900. I installed it with the instuctions. Everything was well until the light started to give a strobe effect and the fan makes a groaning sound only on the 1 and 2 settings. The only way to turn off the strobe effect is by turning off the wall switch. Any ideas on how to fix this or should I take it back?