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Hello,

My heat system works with the fan, however, the ac system does not work, and the fan doesnt work with ac system, nor does it in (on) position on thermostat, however, i can turn the fan on manually by a switch inside the furnace door, and i can push the contactor in by hand on the ac unit and everything works that way, so it seems the thermostat isnt engaging the air or fan, but i bypassed the thermostat and crossed the hot to the fan and the hot to the ac and nothing still worked, ive replaced the transformer, ive replaced the relay, i am out of ideas, i cannot find a fuse anywhere, this is an old mobile home furnace, any tips would be appreciated!
 
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