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    Air Conditioner Indoor Unit Motor (YWM 10/15/L/J) Wiring and Control - please help

    I wanted know how to control the fan speed of this fan motor. I have been looking for wiring diagram of this fan motor below:

    YORK 1.0&1.5HP IN. FAN MOTOR 18W (YWM10/15L/J)

    This is the original spare part used for air-con indoor split unit.
    (there is two different motor shown in picture. but i just assume both should have same wiring connection)



    There are 2 sets of 6 wires:

    1) red+black+white
    - I have no problem to connect to my AC power supply and motor capacitor to power up the motor.

    2) white+brown+black
    - I don't understand the symbol shown as "PG" in the diagram. It shows White=Vout, Brown=Vcc and Black=GND. Does it mean I need to connect DC voltage to vary and control the fan speed? or these wires are meant for other purpose?

    hope can get some advice/manual on how to control the fan speed.

    •   Alt15th July 2016, 08:25

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    Re: Air Conditioner Indoor Unit Motor (YWM 10/15/L/J) Wiring and Control - please hel

    PG = Power Generator?
    A good design question lists your overall requirements™ The best question deserves a better answer. ™
    ... Tony Stewart EE since 1975



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    Re: Air Conditioner Indoor Unit Motor (YWM 10/15/L/J) Wiring and Control - please hel

    I have no problem to connect to my AC power supply.
    Is this an adjustable power supply? Does it vary the voltage? If so then you might be able to control fan speed with simple means such as a triac. (I built this type of fan control for a 'squirrel-cage' fan on a wood stove.)

    Otherwise you need to vary the frequency. It is a challenge to build such a controller.

    Does your air conditioner lack a speed switch (low-med-high)?



    •   Alt15th July 2016, 18:57

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    Re: Air Conditioner Indoor Unit Motor (YWM 10/15/L/J) Wiring and Control - please hel

    Pure speculation, but.........

    The 230v input voltage and capacitor connections are given, and are fairly unambiguous, so why not just connect it up and see if it runs.

    Vcc is suggestive of +5v supply, which it most likely is.
    PG could be a tachometer output to indicate the fan is actually turning.
    "PG" is probably something more appropriate in Japanese or Mandarin.

    These days with microcontrollers in everything, its not that uncommon to have some self testing and failure shutdown built in.

    If the internal air blower fan stops turning, the airconditioner probably (?) shuts down and indicates some kind of error code.

    This can be a very big help to the service guys, or diagnosing faults over the telephone. Its not as trivial as it seems.
    Cheers, Tony.



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    Re: Air Conditioner Indoor Unit Motor (YWM 10/15/L/J) Wiring and Control - please hel

    Quote Originally Posted by BradtheRad View Post
    Is this an adjustable power supply? Does it vary the voltage? If so then you might be able to control fan speed with simple means such as a triac. (I built this type of fan control for a 'squirrel-cage' fan on a wood stove.)

    Otherwise you need to vary the frequency. It is a challenge to build such a controller.

    Does your air conditioner lack a speed switch (low-med-high)?

    Yes i connect it direct to 220 VAC. I can add in triac to vary the speed. I bought this part from local air-con spare part supplier, so i don't know how does the original air-con controller board control this motor. I plan to use this fan motor for other cooling purpose and i have my own controller board ready.

    - - - Updated - - -

    Quote Originally Posted by Warpspeed View Post
    Pure speculation, but.........

    The 230v input voltage and capacitor connections are given, and are fairly unambiguous, so why not just connect it up and see if it runs.

    Vcc is suggestive of +5v supply, which it most likely is.
    PG could be a tachometer output to indicate the fan is actually turning.
    "PG" is probably something more appropriate in Japanese or Mandarin.

    These days with microcontrollers in everything, its not that uncommon to have some self testing and failure shutdown built in.

    If the internal air blower fan stops turning, the airconditioner probably (?) shuts down and indicates some kind of error code.

    This can be a very big help to the service guys, or diagnosing faults over the telephone. Its not as trivial as it seems.
    ok noted. probably will get help from service guy. that could be some speed sensing to the controller board



    •   Alt19th July 2016, 10:55

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    Re: Air Conditioner Indoor Unit Motor (YWM 10/15/L/J) Wiring and Control - please hel

    Quote Originally Posted by eyeow View Post
    I wanted know how to control the fan speed of this fan motor. I have been looking for wiring diagram of this fan motor below:

    YORK 1.0&1.5HP IN. FAN MOTOR 18W (YWM10/15L/J)

    This is the original spare part used for air-con indoor split unit.
    (there is two different motor shown in picture. but i just assume both should have same wiring connection)



    There are 2 sets of 6 wires:

    1) red+black+white
    - I have no problem to connect to my AC power supply and motor capacitor to power up the motor.

    2) white+brown+black
    - I don't understand the symbol shown as "PG" in the diagram. It shows White=Vout, Brown=Vcc and Black=GND. Does it mean I need to connect DC voltage to vary and control the fan speed? or these wires are meant for other purpose?

    hope can get some advice/manual on how to control the fan speed.
    speed of motor change by triac. micro controler receid speed from PG
    sorry if my english is bad.


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    Re: Air Conditioner Indoor Unit Motor (YWM 10/15/L/J) Wiring and Control - please hel

    Hi,

    Maybe the "P" of "PG" means PULSE.
    Maybe hallsensor or optical.
    Just an rpm reedback.

    No guarantee for this:
    I'd use a 5V power supply and a 100R current limiting resistor.
    Connect Vcc and GND. A scope to Vout.
    Turn the motor by hand and see what happens.

    Klaus



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    Re: Air Conditioner Indoor Unit Motor (YWM 10/15/L/J) Wiring and Control - please hel

    it't actualy. i'd repaired afew times.
    sorry if my english is bad.



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