Some of these slide outs use whats called a schwintech slide system you will need to find the control board which is in the dinette hidden behind a faux panel. There is a button on the board push it 6 times in a row and on the 7th hold it in until it flashes this puts it in "high amp" mode. You can then run the slide. If this does bot solve the issue my name is Brad and I am with the service department feel free to call between 9-6 mon through saturday.
On the opposite side of the trailer that the slide is on, there should be a little hole that you can attach a hand grant to and crank it in manually
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