Question about Carrier 38BRC048 Air Conditioner

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Replacing a blower motor on a TRANE unit

Need to know the proper way to wire motor and capacitor.

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Look on the motor it self or website that motor.! Thank -you-very-much!

Posted on Aug 28, 2008

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Trane xl80 blower working intermittently


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

Please email me that is the

Jun 24, 2012 | Heating & Cooling

1 Answer

My trane xe 1000 central air conditioning unit turns on and the fan os working, but no air is coming into tue house. The lines get ice on them outside. I left it off all night with no change in status


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.

Sep 01, 2011 | Heating & Cooling

1 Answer

Outdoor fan dont start i give it help to starte them the motor start and run.? i think is a bad motor ? ( trane XL 13i ) thanks for help.


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.

Aug 04, 2011 | Heating & Cooling

1 Answer

Trane xe 1000 - 1/4 fan motor went bad - I replaced it with a used 1/3 from another trane unit - it had same wiring harness etc everything starts, runs, cools -cold air - but only for about 5...


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.

Aug 24, 2010 | Heating & Cooling

1 Answer

I have a trane XR12 Heat Pump. The cooling fan on the outdoor unit does not run nor does the compressor. The fan motor heats up and hums. I am guessing that the problem is the start capacitor on the fan...


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.

Jul 29, 2010 | Heating & Cooling

2 Answers

Outdoor fan does not come on


most likely it the the cap that is bad. Is this in heating or cooling mode?

Jun 03, 2010 | Heating & Cooling

1 Answer

Trane XE1200 Fan Motor


Most likely problem with a not-so-old motor is the run capacitor for the fan.

Some units have fan & compressor capacitor combined into one -- others are separate.

The capacitor can be tested with a multi-meter with an MFD setting -- it should read reasonably close to the specs marked on the capacitor.

Charlie

Aug 19, 2009 | Heating & Cooling

4 Answers

Compressor fan motor runs backwards


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.

May 09, 2009 | Goodman CKL24AR24 Air Conditioner

1 Answer

Durango vent blower fan


The blower motor resistors are known for going bad. Usually its because the blower starts drawing too much current. What I would recommend doing if you can and have the tools, is to check the blower motor connector to make sure 12 volts is present. If so than I would recommend replacing the blower motor resistor. Then if the same issue ever happens again and the blower motor resistor is bad again, you will need to replace the blower motor and the blower resistor as the final repair.
Here is some info about testing the resistor using a multimeter it you have one:

DIAGNOSIS AND TESTING- BLOWER MOTOR RESISTOR WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
Both the front blower motor resistor and the optional rear heater-A/C unit blower motor resistor can be diagnosed using the procedure that follows. For circuit descriptions and diagrams, refer to Air Conditioning/Heater in Group 8W - Wiring Diagrams.
  1. Disconnect and isolate the negative battery cable.
  2. Disconnect the wire harness connector from the blower motor resistor block.
  3. Check for continuity between each of the blower motor switch input terminals of the resistor and the resistor output terminal. In each case there should be continuity. If OK, repair the wire harness circuits between the blower motor switch and the blower motor resistor block or blower motor as required. If not OK, replace the faulty blower motor resistor block.
Here is the information on replacing the resistor:

REMOVAL
  1. Disconnect and isolate the battery negative cable.
  2. From the passenger foot well area, remove the two hex screws used to secure the blower motor resistor.
  3. Unplug the front blower motor resistor from the wire harness connector.
  4. Remove the front blower motor resistor from the HVAC unit.
Here is an exploded view of the HVAC box. The resistor is #63 in the picture and the actual part may appear slightly different:

spacer.gif 1100_024_0003.gif spacer.gif spacer.gif View Full Image spacer.gif


If any issues such as no voltage at blower connector or damaged or melted connector at the resistor then let me know.

Oct 19, 2008 | 2002 Dodge Durango

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