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1st timer. How can I Test this 4 pin fan from a desktop e-machine with a digital multimeter?

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  • Eleazar Cruz Oct 09, 2010

    Thanks! drifter, After you answer I figured I could still use a three pin fan and it worked...


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Yellow is +12v, red is +5v, black is ground the other blue is the negative...

Posted on Oct 01, 2010

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  • Catalin Turcu
    Catalin Turcu Oct 01, 2010

    I forgot to mention test it ..keep the negative ..and connect and verify the resistance in he other 2 positives..

  • Catalin Turcu
    Catalin Turcu Oct 01, 2010

    keep in mind that the fans are different color coded that the power supply ..

  • Catalin Turcu
    Catalin Turcu Oct 01, 2010

    I don't know the exact values..but if the connection is interrupted..will sow no resistance ...
    I usually test them with a power supply with the right voltage for each ..and see if they make any life signs..


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How to install a digital timer model HD48S

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Copy following link for illustrations

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I don't have exact schematic for your 8-pin timer.
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RTE-p1ad is 24-volt AC 8-pin on-delay timer.

Manual for RTE-P1 & RTE-P2

I have not wired the P1 timer.
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When power is applied to 2 and 7, the ON delay countdown begins.
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Using multimeter set to 24VAC, you can check each of the pins by putting power to 2 and 7 and checking which pins have power after countdown ends.
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There are contact numbers for product:
USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC

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