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Thread: 1999 VF3 HAAS Alarm# 175

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  1. 09-10-2010, 04:58 PM #1
    rnorris
    rnorris is offline Registered
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    1999 VF3 HAAS Alarm# 175

    I have a 1999 VF3 Haas 20HP vector drive vertical mill. Was homing out XYZ. Shuttle in then went into alarm #175 ground fault detected. I burned out R3 6.8 ohm 20 watt resistor on the IO PCB board. Has anyone else had this problem, if so, how have you corrected this issue. HELP.
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  2. 09-10-2010, 09:27 PM #2
    KenFoulks
    KenFoulks is offline Registered
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    There is most likely a short that needs to be located before the board is replaced. Based on the pre-condition description provided, I suggest checking the tool changer motors.
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