Question about Coleman Mach 15 Air Conditioner

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Fan won"t start on it's own.

Fan won't start on it's own, I have to give it a spin to start it. Only has two capacitors, neither of them are start capacitors.

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  • Anonymous Jun 07, 2008

    Mine's a Coleman Mach 8333B. Same problem - I have to spin the fan to get it started. Once running I just leave it on continuous fan and/or cool. It runs fine, just won't start on its own. KLZ

  • Frustrated25 Jun 20, 2008

    I too have a Coleman Mach 8333B series RV AC with the same problem. Fan won't start on its own, I have to give it a spin to start it. Only has two capacitors. From my research I find that one is a run capacitor and the other is a fan capacitor. Which capacitor is causing this problem?

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Sounds like classic capacitor failure. A capacitor stores electric energy so that the motor can overcome starting torque by making a big shot available. AC motors must run at rpm's that correspond to the 60 hz alternating current frequency. Theory says this rpm is attained in an instant; reality includes momentum that requires a short but big initial current requirement. If that isn't available, the motor can't generate the power to accelerate to operating rpm. The capacitor provides this power. You can also provide it with a spin. A capacitor is a capacitor and as long as you get one with a micro farad rating at least as big as the one your take off, but as close as possible and not too big, that may solve your problem. Their cheap and replacing both may be less trouble than doing the job twice. If it’s built-in, you may need the whole motor. I been there and mine runs fine.

Posted on Oct 07, 2008

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I had an issue similar to this when my air conditioning wouldn't start on its own. I had to have a service provider come out and fix it. However, it turned out that something was inside of it and jamming it from operating properly. Have you checked for anything that could be stuck and preventing it from working properly? Quality HVAC Services Heating Cooling Systems

Posted on Dec 15, 2015

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