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Just had a new Goodman package installed on my home and insulation seem to go well but when I went to go start up it came on shut off and I was told it was it getting enough voltage to the shut off panel on top of roof that was iJust had a new Goodman package installed on my home and insulation seem to go well but unit would come on and shut off they went and checked the voltage and they said it was only getting 88 V to the shut off Box which they installed new Alta well I did some research electrician says I now have 120 V top and bottom but the unit doesn’t seem to wanna kick on what is the procedures to start up a Goodman unit like thisHi