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on the motor should be a diagram detailing the wires. brown white goes to either side of the capacitor and brown wire to other side of capacitor. hi speed goes to normally open contact on the indoor fan relay and the wire designated common on the motor goes to the other side of power from the relay contacts.
hello Miss/Mrs/Mr, I have the furnace trane xl 80, when I turned for heat everything working but only blower motor was not running, I wait for 1 minute all system suck down? I guess the capacitor blow out, that the reason why blower motor was not running
If you left it off all night and no air is coming out of supply registers then the blower motor is not running. If the system is getting frost on the suction line(the big copper line coming out of the outside condensing unit with rubber insulation on it) within minutes of turning the system on then that will confirm that the blower motor is not running properly.
Unless you are very experienced in working on air conditioning, i would call a professional to do the repair.
If the motor has to be replaced its takes an experienced technician to do it correctly.
It could simply be the run capacitor on the blower motor.
This is probably going to be a 5 mfd capacitor.
Turn off all power to air handler, remove service panel, set your multi-meter to mfd (microfarads),
place the leads on the connections on top of the capacitors securely for 5 seconds. You should read about 4.8 to 5, if not the capacitor is bad.
There are other possible problems that could cause your symptoms, but ultimately your blower fan is not blowing air.
Yes could possibly be the fan motor, but before you change the motor, check the capacitor. It looks like a battery and is located in the electrical section of the unit. It may have one capacitor for both the fan and compressor. If the capacitor looks swollen or pregnant it is bad. If you have a ohm meter you can also check to see if the capacitor is open. Take the capacitor out of the unit after shutting off power. Note where the wires go before you take them off. Check across the capacitor with an ohm meter. (turned on to highest ohm setting) If the needle jumps up and then quickly back down, the capacitor is good. If the needle on the meter jumps up and stays up its shorted and needs replacing. If the needle doesn't move at all , the capacitor is open and needs replacing. NOTE : If the fan motor is whining when it is running, the bearings are worn and the motor will need replacing.
Did the 2 fans have the same rpm. If there is not enough airflow through the outside unit the compressor will shutdown on high discharge pressure. Also make sure the fan blades are positioned right if there is a shroud for them. Did the other motor have a capacitor with it or did you use the 1 from the smaller motor. Sometimes the motor data plate will tell you what size capacitor you need. Let me know what you find.
Hello Rich,NO you have a dual capasitor that runs both fan & compressor motors.Shut it down and let it cool off.You need the uf rate numbers & the volt rating of the existing cap (printed on the side)to get EXACT replacement.The wires plug in to the top termanls C, HERM &FAN.Worth fixing good luck.
Most likely a bad motor or bad capacitor. I would check the capacitor first as this is probably a $20 fix. The fact that it runs in the correct direction but at a reduced speed really leans hard to the capacitor.
Good Luck and hope this resolves things for you. Let me know.