My fan is pretty quiet and I keep mine in "user" mode. After you set your "user" settings, try going to the "LED settings" and put it on "eco" mode. If it is already on eco mode, switch it to normal mode and then back to eco mode. I'm not sure what else you can try. My fan is quiet, I keep it in user mode, I have it set to eco mode and I don't lose my settings when it is shut off and then turned back on. Good luck, and hope this helps you.
Thanks. Did some playing around, and indeed my projector will stay in user mode. However, this doesn't help my original intent, which was to keep the fan noise lower. It seems that User mode uses the same fan speed as PC mode, no matter how dim you set it. In terms of relative fan nosie, here's what I saw (all eco mode):
Bright: high relative fan speed
Even if I have the brightness set to 0, the fan will still be "medium" and get quieter if I switch to Cinema mode. I have my projector setup to auto power on when plugged in, and use a plug in light timer to automatically disconnect and reconnect power at a certain time of day, so I'd like the projector to always power up into the lowest fan noise, but so far I have to manually change it every day.