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I'm troubleshooting a carrier furnace for a friend, history: he had someone else rewire after changing fan, it was completely wrong & had a burnt fuse when I rewired it correctly. But now the furnace is burning fuse out now, even with the wiring exactly like the schematics show it should be. Is the board gone now?
 

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AKA HVACTECHFW
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Are you blowing the 3A low volt fuse? If so then remove the low volt wires from the board and jumper R to G, this should bring the blower on.
 
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