I have a GFCI outlet in my bathroom. Connected to the same circuit is an exhaust unit over the shower. The exhaust unit has a regular light, a night light and the fan. Recently the GFCI has started popping when the exhaust fan is on. It does NOT pop when either of the lights are on. It even pops when the exhaust fan is on, but there is no moisture in the bathroom. Is it a problem with the GFCI or the exhaust fan? Any suggestions would be great.

Thanks,
Glenn

Most are easily removable and easy to unplug, I would remove and blow out all dust/dirt. Then Measure resistance between Fan neutral and ground, and fan hot and ground, any resistance will trip a GFI.