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Thread: DC Fan motors

  1. #1
    Join Date
    Aug 2014
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    DC Fan motors



    Hi Guys,

    Can someone please explain to me why DC condenser fan motors take out the outdoor
    Control PCB when they go faulty?
    Sometimes they check out fine on resistance readings. Is it something to do with the diodes in the fan motor?
    I had one that was supposed to check at .5V DC and it was reading .001

    And why do they take out the board even when it has not started up?

    I'm no electronics expert, but why don't they have fuses to prevent this?

    Thanks,
    Keza



  2. #2
    Join Date
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    Re: DC Fan motors

    Maybe they make more profit selling boards than the equipment?,yes we all know how to protect stuff but manufacturers don't adhere to common sense,they maximise profits on spares.

  3. #3
    Join Date
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    Re: DC Fan motors

    Yeah true true

  4. #4
    Join Date
    Aug 2014
    Location
    Australia
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    Re: DC Fan motors

    But does anyone have a lot of experience with them and why they take out control boards etc?
    Units are getting too expensive to repair with all these chain reactions from pcb board to pcb board.
    They say this new technology is to save power and the environment but how does it do this when your throwing away 5-7 year old machines as its more economical to buy a new one with warranty.
    This means the factories making these will be working overtime using even more power and pollution to make more units.
    Just trying to self learn how to fault find all this electronics.

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