Causes are often traced back to refrigerant leaks, a clogged. Webjul 10, 2017 · your semi truck ac is still blowing, but the air isn’t cold. You know you’re going to have to stop soon for repair.

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Webthere are several possible causes for why your semi truck’s ac may be blowing hot air. These include a lack of refrigerant, debris buildup inside the unit, or an electrical. This issue can also arise from a faulty.

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