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    HVAC Blower Motor Electrics Wires Colors

    Hi, I had unassembly a portable LG A/C from the garbage and want to reuse the blower to use it for succing the air from my desk.

    I don't know what is the color wiring codes. I would like to use it directly on 110volt with a varial ceiling controller switch (connect into the maximum blower power, and control it).

    I will need help.

    The blower fan has
    2X Black wires (connected previously on a relay) (i keeped the relay)
    1X Red wire
    1X Yellow wire
    1X Blue wire
    1X green ground wire

    I don't know how to connect it. Any help is appreciated.

    Thanks.
    Attached Files
    Last edited by 8ternity; 12-05-2015, 05:05 PM.

    #2
    Re: HVAC Blower Motor Electrics Wires Colors

    Who make the motor ?
    Did this motor have a run cap ?
    What voltage did this ac unit run ?
    Is there a label on this motor at all ?
    Last edited by sam_sam_sam; 12-05-2015, 09:36 PM.
    9 PC LCD Monitor
    6 LCD Flat Screen TV
    30 Desk Top Switching Power Supply
    10 Battery Charger Switching Power Supply for Power Tool
    6 18v Lithium Battery Power Boards for Tool Battery Packs
    1 XBox 360 Switching Power Supply and M Board
    25 Servo Drives 220/460 3 Phase
    6 De-soldering Station Switching Power Supply 1 Power Supply
    1 Dell Mother Board
    15 Computer Power Supply
    1 HP Printer Supply & Control Board * lighting finished it *


    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
    2 Hem Saw Computer Stack Board

    All of these had CAPs POOF
    All of the mosfet that are taken out by bad caps

    Comment


      #3
      Re: HVAC Blower Motor Electrics Wires Colors

      No wiring diagram inside the unit?
      Model number of the LG?
      Any label on the blower?
      Last edited by budm; 12-05-2015, 09:35 PM.
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

      Comment


        #4
        Re: HVAC Blower Motor Electrics Wires Colors

        bet what you called a relay is a cap.

        Comment


          #5
          Re: HVAC Blower Motor Electrics Wires Colors

          BTW, that blower is more than likely to be multiple speeds.
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment


            #6
            Re: HVAC Blower Motor Electrics Wires Colors

            Originally posted by sam_sam_sam View Post
            Who make the motor ?
            Did this motor have a run cap ?
            What voltage did this ac unit run ?
            Is there a label on this motor at all ?
            I unassembly a capacitor, i think it's for the compressor. I took a picture of the capacitor (see attachement).
            Oups.... the 2 black wire was attached into the gray capacitor. I was thinking is a relay, no is a capacitor!

            115V - 60hz 1.2A
            12.5 uF/250V
            Yes see attachement (i found it under the motor assy)

            Originally posted by budm View Post
            No wiring diagram inside the unit?
            Model number of the LG?
            Any label on the blower?
            Yes i see it but don't know how to wire with the capacitor, and the relay and the switch i want to buy.

            Originally posted by budm View Post
            BTW, that blower is more than likely to be multiple speeds.
            Exactly, 3 speeds i think. I want to use 1 speed with a ceiling fan controller to control the variation (if possible).

            I want to use it in my Honton HT-R390 reflow/rework station to sucks the air outside. See my attachement of my desk i've build last weekend.

            Not sure if the relay is a relay or capacitor!

            Any help is appreciated. Im happy to see your answers and your time to answer my question!

            The A/C i found is a LG LP1111WXR. Bad compressor, leak, i've keep all the parts except the compressor.

            Thanks everyone! Your help is really appreciated!

            P.S. sorry, my stand for the rework station is not finish. I will add sides closed and need to install a variable switch.
            Attached Files
            Last edited by 8ternity; 12-07-2015, 04:19 PM.

            Comment


              #7
              Re: HVAC Blower Motor Electrics Wires Colors

              IF someone can help me by understood all the wires goes where, etc.

              Did i can use the high power with a variable ceilling fan switch?

              I want to use this to control it:
              https://www.homedepot.ca/fr/home/p.r...000158026.html

              Is it possible?

              Thanks.

              Comment


                #8
                Re: HVAC Blower Motor Electrics Wires Colors

                OK

                The two black wires are your cap leads
                Blue wire is your hot lead
                The yellow wire is one speed
                The red wire is one speed

                This is very important ----->
                Only hook one of these at a time either the yellow wire or the red wire BUT NOT both at the same time if you do that you will fry the motor this is your other hot lead

                I do not think that you can use that speed control --->

                Here is a way you can find out hook your motor up the way I was telling you and if you have an amp probe measure them amp using red wire then do the same thing using the yellow wire which ever wire get you close to 1.2 amps use this wire on the speed controller and at full speed it should not read any higher than the 1.2 or so reading you got with out the speed controller

                If it work OK then you have one more thing to check that is at the lowest speed that you are going to use -----> the amp reading should not be more than 1.2 or so
                In fact it should be a lot less after running the motor for 15 minutes the tempature of the motor should NEVER get so HOT that when you put your hand on the motor and if you can not keep it there because it so HOT you CAN NOT use any speed controller on this motor

                I hope this helps
                Last edited by sam_sam_sam; 12-08-2015, 05:01 PM.
                9 PC LCD Monitor
                6 LCD Flat Screen TV
                30 Desk Top Switching Power Supply
                10 Battery Charger Switching Power Supply for Power Tool
                6 18v Lithium Battery Power Boards for Tool Battery Packs
                1 XBox 360 Switching Power Supply and M Board
                25 Servo Drives 220/460 3 Phase
                6 De-soldering Station Switching Power Supply 1 Power Supply
                1 Dell Mother Board
                15 Computer Power Supply
                1 HP Printer Supply & Control Board * lighting finished it *


                These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                2 Hem Saw Computer Stack Board

                All of these had CAPs POOF
                All of the mosfet that are taken out by bad caps

                Comment


                  #9
                  Re: HVAC Blower Motor Electrics Wires Colors

                  It looks to be only 2-speed (HI and LO), as you can see, the motor wiring only show 2-position switch to select the speed.
                  Never stop learning
                  Basic LCD TV and Monitor troubleshooting guides.
                  http://www.badcaps.net/forum/showthr...956#post305956

                  Voltage Regulator (LDO) testing:
                  http://www.badcaps.net/forum/showthr...999#post300999

                  Inverter testing using old CFL:
                  http://www.badcaps.net/forum/showthr...er+testing+cfl

                  Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                  http://s807.photobucket.com/user/budm/library/

                  TV Factory reset codes listing:
                  http://www.badcaps.net/forum/showthread.php?t=24809

                  Comment


                    #10
                    Re: HVAC Blower Motor Electrics Wires Colors

                    Great. It"s worked! Thanks.

                    I've use the high speed, if too much powerful, i will use low speed. Thanks.

                    Comment


                      #11
                      Re: HVAC Blower Motor Electrics Wires Colors

                      Hi Sam Sam Sam,

                      Home Depot recommend me the current ceilling fan controller that will supposely worked with blower can with capacitor.



                      COOPER FAN SPEED CONTROL RFS5 - 5A FULLY VARIABLE

                      "For use with permanently installed split capacitor or shaded pole motors used in ceiling fans. To avoid overheating and possible damage to other equipment, do not use to control receptacles, fluorescent lights, transformer-supplied appliances, etc."

                      Before installing it, normally i just used the blower fan for about 10-12 minutes maximum (for reflow, for reballing).

                      What did you think?

                      Thanks,
                      8ternity

                      Comment


                        #12
                        Re: HVAC Blower Motor Electrics Wires Colors

                        Update: Well, i don't like the noise of the motor with the speed controller. Don't take change on it. Will just use it with low speed with a ON/OFF switch. Thanks for help.

                        Comment


                          #13
                          Re: HVAC Blower Motor Electrics Wires Colors

                          If motor is making a funny noise you are right do not use it

                          This motor dose not like this type of speed controller
                          9 PC LCD Monitor
                          6 LCD Flat Screen TV
                          30 Desk Top Switching Power Supply
                          10 Battery Charger Switching Power Supply for Power Tool
                          6 18v Lithium Battery Power Boards for Tool Battery Packs
                          1 XBox 360 Switching Power Supply and M Board
                          25 Servo Drives 220/460 3 Phase
                          6 De-soldering Station Switching Power Supply 1 Power Supply
                          1 Dell Mother Board
                          15 Computer Power Supply
                          1 HP Printer Supply & Control Board * lighting finished it *


                          These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                          1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                          2 Hem Saw Computer Stack Board

                          All of these had CAPs POOF
                          All of the mosfet that are taken out by bad caps

                          Comment


                            #14
                            Re: HVAC Blower Motor Electrics Wires Colors

                            Sam is giving you the correct information. Simple fan or blower motors are induction motors with (in your case) one or more fixed speeds. Speed control on these motors would use a hi-lo switch rather than a triac phase angle control. Examples of motors that are built for continuously variable speed control have commutators (AC and DC motors) or the modern equivalent electronic commutation on the newer HVAC equipment.
                            Is it plugged in?

                            Comment


                              #15
                              Re: HVAC Blower Motor Electrics Wires Colors

                              First do you have two capacitors going to this motor? I saw the one 12UF cap. You also showed a picture with a metal can attached to the side of the motor? So it looks like you might have a Run capacitor and a Start capacitor. The metal strap I believe is hiding the caps value so you would have to take out the screw holding the strap around the metal can. This information should help you out. http://www.electrical-knowhow.com/20...s-part_17.html
                              Last edited by keeney123; 12-13-2015, 01:58 AM.

                              Comment


                                #16
                                Re: HVAC Blower Motor Electrics Wires Colors

                                Originally posted by keeney123 View Post
                                First do you have two capacitors going to this motor? I saw the one 12UF cap. You also showed a picture with a metal can attached to the side of the motor? So it looks like you might have a Run capacitor and a Start capacitor. The metal strap I believe is hiding the caps value so you would have to take out the screw holding the strap around the metal can. This information should help you out. http://www.electrical-knowhow.com/20...s-part_17.html
                                I had 3 capacitors with this air conditioner.

                                1 metallic is for the air compressor;
                                1 gray lower blower
                                1 gray labeled upper blower.

                                Capacitor fit with label of the motor uF value.

                                I don'T find any dual low/high home switch at Home Depot. I've look into 3 stores and they don't have that.

                                Comment


                                  #17
                                  Re: HVAC Blower Motor Electrics Wires Colors

                                  So we are only interested in the HVAC Blower Motor caps not the compressor right? So with one cap to each blower motor I would think that to be a start Cap. If you have a AC clamp-on meter you could check that to see if there is any current running through the cap when the motor is running by measuring the magnetic field to the wire on the far side of the cap. I do not know how fast the start circuit turns the motor. It may be possible to use this circuit to turn the motor slower. I am not sure what type of stresses it would put on the circuit however. The other possibility might be to put a large variable cap in series with the motor. Lastly you might try a purely resistive rheostat in series with the motor. A SCR only turns on during a portion of the ac wave perhaps the motor need a constant source of current to operated correctly?

                                  Comment


                                    #18
                                    Re: HVAC Blower Motor Electrics Wires Colors

                                    Originally posted by 8ternity View Post
                                    I had 3 capacitors with this air conditioner.

                                    1 metallic is for the air compressor;
                                    1 gray lower blower
                                    1 gray labeled upper blower.

                                    Capacitor fit with label of the motor uF value.

                                    I don'T find any dual low/high home switch at Home Depot. I've look into 3 stores and they don't have that.
                                    You could use this
                                    http://www.ebay.com/itm/ZB2-BE101-SP...AAAOSwp5JWU3nY


                                    Turn it to left would be one speed
                                    middle would be OFF
                                    Turn to the right would be the other speed

                                    The right cap for this motor is a 12.5uf@250 volts
                                    Last edited by sam_sam_sam; 12-19-2015, 07:28 PM.
                                    9 PC LCD Monitor
                                    6 LCD Flat Screen TV
                                    30 Desk Top Switching Power Supply
                                    10 Battery Charger Switching Power Supply for Power Tool
                                    6 18v Lithium Battery Power Boards for Tool Battery Packs
                                    1 XBox 360 Switching Power Supply and M Board
                                    25 Servo Drives 220/460 3 Phase
                                    6 De-soldering Station Switching Power Supply 1 Power Supply
                                    1 Dell Mother Board
                                    15 Computer Power Supply
                                    1 HP Printer Supply & Control Board * lighting finished it *


                                    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                                    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                                    2 Hem Saw Computer Stack Board

                                    All of these had CAPs POOF
                                    All of the mosfet that are taken out by bad caps

                                    Comment


                                      #19
                                      Re: HVAC Blower Motor Electrics Wires Colors

                                      Originally posted by keeney123 View Post
                                      So we are only interested in the HVAC Blower Motor caps not the compressor right? So with one cap to each blower motor I would think that to be a start Cap. If you have a AC clamp-on meter you could check that to see if there is any current running through the cap when the motor is running by measuring the magnetic field to the wire on the far side of the cap. I do not know how fast the start circuit turns the motor. It may be possible to use this circuit to turn the motor slower. I am not sure what type of stresses it would put on the circuit however. The other possibility might be to put a large variable cap in series with the motor. Lastly you might try a purely resistive rheostat in series with the motor. A SCR only turns on during a portion of the ac wave perhaps the motor need a constant source of current to operated correctly?
                                      For this type of motor

                                      None of this would work

                                      The motor would ether not run or over heat
                                      Last edited by sam_sam_sam; 12-19-2015, 07:32 PM.
                                      9 PC LCD Monitor
                                      6 LCD Flat Screen TV
                                      30 Desk Top Switching Power Supply
                                      10 Battery Charger Switching Power Supply for Power Tool
                                      6 18v Lithium Battery Power Boards for Tool Battery Packs
                                      1 XBox 360 Switching Power Supply and M Board
                                      25 Servo Drives 220/460 3 Phase
                                      6 De-soldering Station Switching Power Supply 1 Power Supply
                                      1 Dell Mother Board
                                      15 Computer Power Supply
                                      1 HP Printer Supply & Control Board * lighting finished it *


                                      These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                                      1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                                      2 Hem Saw Computer Stack Board

                                      All of these had CAPs POOF
                                      All of the mosfet that are taken out by bad caps

                                      Comment

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