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Ruud unit the fan will not turn on for the "cool" setting, but will turn on for the "heat" setting, any ideas of potential issues?

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Hello, does the outside condensing unit start when the thermostat is set to cool? if so, the relay on the integrated control board is bad and the board must be replaced. If the outside unit does not start then most likely the thermostat is bad.

Posted on Mar 21, 2011

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