The manual will have a fuse box diagram showing the locations of all fuses and relays, and which ones are related to the climate control system (blower motor, compressor clutch, etc.). The location of the fuse box(es) will also be shown – typically under the hood and sometimes inside the vehicle, often near the driver's side.
Without your owner's manual, I cannot provide a specific location. Searching online for "2001 Dodge Caravan fuse box diagram" might provide a diagram, but always double-check against your specific vehicle's manual for accuracy. Using an incorrect diagram could lead to further problems.