You should leave your air conditioner turned off (while keeping the indoor blower fan running on the "On" setting) for at least 3 to 6 hours to allow frozen evaporator coils to thaw completely. The exact thawing time depends on ambient indoor humidity, the thickness of the ice encasing the coils, and how warm the circulating air is. Never attempt to rush the process by chipping at the ice with sharp tools or pouring boiling water, as this can puncture fragile copper refrigerant lines and cause severe equipment damage. Verification: Inspect the indoor coils and outdoor copper lines to ensure every trace of ice has melted.
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