Question about Heating & Cooling
Most likely you have either a low or high pressure cutout switch that has shut the unit down. One will be located on the suction line (larger tube) the other on the high pressure line (small tube). If you have both high & low shitches they are tied together in series and in order to bypass them you need to trace them back to the contactor . Pull cutout switch by the unit to disconnect power. Do NOTHING inside the box with power on. You will see they tie together somewhere and each one has one end attached to the contactor. Mark which wire goes where and remove these. This will put those sensors out of the loop. If only one sensor then both wires will go the contactor, one on each side. Turn unit back on and see it the compressor starts up. If so then you need a tech to re-charge or diagnose problem. If not, make sure temp inside is set low enough for compressor to turn on. Still noting, then it most likley your thermostat. Need volt meter to check this and better to not mess with the wires as this can really mess things up. At some point you will most likely need to call a tech anyway as you need to be licensed to buy freon and will be required if low charge is indicated.
Posted on Apr 23, 2013
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Posted on Jan 02, 2017
these motors are famous for the inyernal fuse blowing in the fan motor. check continuity between the red and blac wires. if there is non the fuse is gone. These motors are fairly easy to take apart and change the fuse . hope this helps
Posted on Sep 01, 2008
I would replace the contactor if you are getting 24 volts to the contactor and it isn't engaging therefore the magneto on the contactor is out and the contactor will need replacement. If you don't have 24 volts at the contactor then the transformer that sends the 24 volts is bad and will need replacing
Posted on Mar 11, 2010
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