When your indoor blower runs but the outdoor condenser unit refuses to kick on, the problem is usually isolated to outdoor power or control components. Common causes include a tripped outdoor electrical disconnect switch, a blown fuse inside the disconnect box, a failed outdoor compressor capacitor, a tripped thermal overload switch on the compressor motor, or a broken 24V control wire running from your indoor thermostat through the wall to the outdoor unit. Verification: Check the outdoor disconnect box and verify that the 2408V power feed is active and delivering voltage safely.
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