Question about Dometic Rooftop RV Air Conditioner

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Duo therm model 600315.321 i compressor runs but fan does not come on so i ordered fan motor kit 3108706.924 & 3310522.002 unit came with a capacitor? does this replace the original capacitir or is this in addition to the compressor capacator the instruction does not say anything except connect white lead to unit capacitor common brown lead fan terminal on unit capacitor? no mounting for capacator. Nick

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  • remsx Aug 01, 2010

    the duo therm motor kit came with a capacator when i opened the box on top of the rv there are 2 capacators installed the instructions do not say to remove one of the capacator or what ever what do i do
    Nick

  • remsx Aug 01, 2010

    is there a real tec for dometic RV Roof ACs that understands my question. I purchased a replacement motor kit 3108706.924 & 3310522.002 the kit came with a capactor 2 terminals 4 lugs each it does not replace the original capacator which has 3 terminals 4 lugs each can a qualified tec answer the wireing question.

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Nick, I believe this is to replace the already mounted capacitor as in most cases this is what gives out in majority of the cases and takes out the fan with it. Check the values on both and i think you will find they are the same or so close it will not matter.

Thanks for using FIXYA

Posted on Aug 01, 2010

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  • Master
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Hi Nick, yes use this new one to replace the original. The capacitor is sized for the fan motor so it is essential that they match. J.

Posted on Aug 01, 2010

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The function of the capacitor is to suppress the NOISE that generator onto the 12V lines.

There are two type being use on fan motor. Your should look like the one on the right (lower) /larger.

duo therm model 600315.321 i compressor runs but - 5e90fe7.jpg

I would leave the capacitor on.

If your radio and TV tuner is picking up addition noise/interference then you should remove it.

Just fire up the TV + Radio and listen. Make you have your engine on a rev. the engine in 2-3000 rpm.

Some motor interference does not show up in low rpm and A/C setting is set to low.

I hope you get your A/C up and running soon.

Posted on Jul 31, 2010

  • Vincent_G
    Vincent_G Aug 01, 2010

    Capacitors value can be added together.

    Can you post the micro f value and voltage of these capacitors?

    Cap #1: _________________uf ________________ voltage

    Cap #2: _________________uf ________________ voltage

    Motor __________________12V? ______________ amp draw or approximate wattage_____________
    Model #__________________







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