[Ron61]

Possibly what DV said and if your relay is a plug in type try unplugging it and see if you still have a draw from the battery. If it was contacts sticking in the relay, there would be no draw unless they had power to them and then the fan should be running or trying to depending on the amount of juice getting through. The winding of the relay could have a short that would continually drain the battery, but then the relay normally wouldn't work correctly. Did this just start or has it been working for some time and just now started doing this? If it has worked before I kind of doubt a wiring error unless one of them has worked loose or has started shorting with a high resistance to some ground. I will be watching for the answer to this also as it is an interesting problem.

Ron