Quote:
Originally Posted by Old Mustanger
Sounds like a shorted wire or bad switch.
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Sure does. There are three wires on the motor, a +12VDC, a -12VDC and ground. The motor works in both directions by reversing the 12VDC voltage at the wall mounted switch.
Either the switch has failed and is shorting to ground in the Extend position or the wire connected to that switch has broken and is making a ground connection (blowing the fuse is the result) when that side of the switch is pushed.
The "broken wire" (if that's the problem) is likely to be in the awning arm articulations where the wire flexes or in the roller tube/arm connection where the wire twists a little bit every time the awning tube rolls up. With rolling it up backwards, I'd check that area carefully for a broken wire (actually, worn insulation on the wire that allows it to short to ground)....
Which wire? The one connected to the EXEND side of the awning switch is where I'd start.