I checked the schematics I have for both the 6535 & 6536 series & the only fuse I saw was for the outdoor blower motor, hi speed line.
The schematic does not indicate amperage, but the unit dataplate shows outdoor blower motor FLA to be 2.8 amps.
I'd check the current draw for the outdoor blower motor. The bearings may be going bad or the run capacitor may be going bad.
Dan & Sharon (Zena-Our Yorkie Puppy)(Kasey-Our Yorkie Puppy RIP 9Jan05-26Jul17) On the Road (2012 Journey 36M, 2020 Chevy Equinox)
USN-Ret ('65-'93) Fulltimers, Class of 2012