If you notice ice buildup on the lines or oily residue around the connections, a leak is probable. If this airflow is blocked, the system cannot perform its heat exchange function properly.
Carrier AC Airflow Blockage Diagnosis Steps
Remove the filter and hold it up to the light; if you cannot see through it clearly, it is time for a replacement. Understanding the underlying cause is essential for restoring comfort and preventing minor issues from escalating into expensive breakdowns.
Operating the unit in this state can cause the compressor—the expensive heart of the system—to overheat and fail, making prompt attention from a certified HVAC technician critical. Locate the air filter, typically found near the return air duct or inside the air handler cabinet.
Carrier AC Airflow Blockage Diagnosis Steps
The most frequent culprit in this scenario is a dirty air filter. It is possible that the system was accidentally switched to "Fan" mode, which circulates room air without engaging the cooling cycle.
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