From the How To section above right:
http://www.subaru-svx.net/photos/files/How-To/38556.pdf
This is the under hood main fuse board.
Bottom right is a 10 A fuse, and in the same line to the left you will see a relay for the aircon compressor.
Remember though fuses don't blow for no reason, usually. Even if you replace this fuse and it's then working you should still try and find why the fuse or relay blew in the first place.
Joe
__________________
Black Betty [Bam a Lam!] '93 UK spec, still languishing
Betty
Jersey Girl Silver '92 UK [Channel Isles] 40K
Jersey Girl @ Mersea
Candy Purple Honda Blackbird
Plum Dangerous
White X2 RVR Mitsubishi 1800GDI.
Vantastic
40,000 miles Jersey Girl