Cold upstairs, should I shut off the fans?

[swimmer_spe]

My master bedroom has a ceiling fan. The stairs to the top floor, which it i on, has a ceiling fan. I have switched them over to the winter direction.

The house is set to 22C/71.5F
Upstairs in the bedroom, it is 69F

The house is a 2 story house. The thermostat is on the main floor. The vent in the Master Bedroom is not blocked.

Any reason why it would be so cold?

 

[joecaption]

Could be any one of at least a dozen things.
Is there a return vent in the room and if so is the filter clean ?
Is there a gap of about 3/4" under the door?
Enough insulation in the attic,and has the attic been air sealed?
Old leaky windows?

 

[swimmer_spe]

Could be any one of at least a dozen things.
Is there a return vent in the room and if so is the filter clean ?
Is there a gap of about 3/4" under the door?
Enough insulation in the attic,and has the attic been air sealed?
Old leaky windows?

Door is left open. Just like last year, and I wasn't cold.
Attic actually has too much insulation.
Return vent is in the hallway.
Windows are not leaking.