By "power to fan" do you mean that the fan part of it works ok and actually blows air through the vents? or do you mean that the supply is ok to the fan but it doesn't turn. If it is the latter then it sounds like your fan is u/s.
If the fan is ok but blowing cold air then have you tried running the fire on gas and then using the blown air. If that works ok but it doesn't work when trying to use the 240v heating then either your 240v is missing (fuse, mcb rcd etc) or else the element may have gone.
The fanmaster fan works on 12v whereas the heating side is 240v so you've got two different supplies to consider.
If the fan is ok but blowing cold air then have you tried running the fire on gas and then using the blown air. If that works ok but it doesn't work when trying to use the 240v heating then either your 240v is missing (fuse, mcb rcd etc) or else the element may have gone.
The fanmaster fan works on 12v whereas the heating side is 240v so you've got two different supplies to consider.