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.