In my leased condo, all of the ceiling fans are on rheostat switches even though the fans have three speeds from pull chain. I wanted to swap rheostat from the master bedroom's fan out with switch dining light fixture, which has only simple on/off single pole. But when I tried the single pole switch from the dining room on ceiling fan, the fan will not work. I've now confirmed this by trying a non-rheostat switch on another ceiling fan. Why would the single pole not work?
Also, the ceiling fan with rheostat in the master bedroom has a noticeable hum. I've read that dimmers on ceiling fans can sometime cause hum, so I hoped to solve that problem with single pole switch.
Best Answer
The MA-FQ4M dimmer doesn't dim its output directly -- it's designed to communicate over the powerline with a compatible canopy module instead, which is why it didn't dim your chandelier. It shouldn't cause your fan to hum when used with the proper canopy module, though -- I'd suspect that your real problem is with the fan itself (perhaps the windings are slightly loose inside the fan motor or something like that).
As to why the fan didn't work with a single pole switch, I suspect it's because the canopy module wasn't seeing the right signals to turn the fan on. Either that, or you simply goofed when you wired the switch.