The fan in my loft is suddenly not working. Fuse box is okay, so it may be that it needs to be replaced. Would you call an electrician, or an air conditioner service? Is it possible you can easily replace this on your own. I am concerend I was told to not shut it down in the summer. Thanks in advance for the help.:confused:

Does it have thermostat control on unit, or a switch, try measuring , and following voltage,
If you can safely momentarily jump switch or thermostat. Jump with power off, then reapply power.
I would call Electrician