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No power
I just installed a new blower to unit outside, I was checking the wires on the power relay to make sure everything was good and tight, when I seen a spark and the A/C stopped working. I tested the power from the house and I was getting good juice but when I went inside I have no power on the thermstat. I order a new power relay and plugged the wires in just like the old one, and still no power on the thermstats. I have checked and reset all breakers and still no power. Does anyone have any ideas on what I could have done. I do have power from to the unit outside 120v, and the handler but no power to the thermstat and the unit will not work at all.
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Unless you have a real small outside condensing unit, you should have 230 volts to it. If you don't have power to your thermostat you most likely have blown a 24 volt fuse off the transformer. Depending on the make, model and age, it could look like a automotive plastic type plug in fuse or it could be a small glass cartridge fuse.
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