Question about Intertherm P3RA-048K Air Conditioner

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Get a screeching sound from unit when heater is on.

When i turn the heater on i hear a screeching sound coming from the unit outside by the house but can't tell if it is coming from the fan or what/where the noise is coming from.

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Chances are it is the outdoor fan motor. Does it squal when you run the A/C? If not it could be the reversing valve solonoid.

Posted on Jan 17, 2009

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