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On Jun 13, 6:29 pm, "Charles" wrote:
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oups.com...

The Blower fan on my A/C will not run in cool mode, but if I turn on
the furnace it starts up fine.

Is the compressor starting up (the outside unit)?

Might be a thermostat problem.

yes the outside unit is starting up.

OK, then the thermostat is working. The blower works in the heat mode. A
controller problem would be my guess. Should be repairable at a reasonable
cost. Some things you can check are the temperatures of the refrigerant
lines into and out of the compressor.