Question about Intertherm P3RA-048K Air Conditioner

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Moter will not cut off

Looking for the fan realy.what it looks like.

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  • burzerko
    burzerko May 11, 2010

    What type of unit and how old

    Make

    Manufacturer

    Need more info to dteremine which relay you have.

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Is the thermostat set on fan on? Be sure the thermostat fan switch is all the way in the auto position..If you have a circuit board with a g terminal that is a gas furnace. Turn power off remove and isolate the green wire then turn power on. Let me know if it still runs. If it does not the circuit board is the most reasonable problem

Posted on Jan 10, 2009

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1 Answer

Out door unite fan moter not ranning .


You will need to use a meter to check this out. This means you will have to check it with power applied. If your not knowledgeable about electricity then you should call a A/C company as this could hurt and even kill you. If you are then first check to see if the condenser fan is wired into the same relay as the compressor is on if so and the compressor is coming on then pull the capacitor and check the MFD with a meter look on the Capacitor to see what the MFD are supposed to be you must be with in 5% + or - if not replace it.now also make sure this unit dose not have a head pressure switch hooked up to the fan if so then make sure that this switch is closing when the pressure gets up to what it is set for.

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1 Answer

Part number the capacitor for the condenser fan moter


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1 Answer

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Sounds like bearings are out on the compressor. I'm assuming that it's not the fan motor making the noise, cause if it was - and the fan motor is cycling on and off - it (fan moter cycling on/off) will also cause the compressor to cycle on and off.

But, since you say it's the compressor (from which the noise is coming from) I would have to say the compressor's bearings are out and since it's a hermetic (sealed) compressor - your only option is to have a service tech check it out to be sure.

Note: I think you are correct (in thinking) a thermal overload is cutting off the compressor, because the compressor does have a 'saftey overload' built internally in the compressor just for that reason.

good luck!

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1 Answer

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