Long-term HVAC service technician logs and homeowner repair reports highlight several recurring mechanical issues affecting Carrier central air conditioning units. These include frozen evaporator coils caused by restricted airflow from clogged air filters, failing compressor capacitors that prevent the outdoor condensing unit from starting, refrigerant leaks at copper tubing joints, blocked condensate drain lines causing safety switch shutoffs, and electronic control board glitches within communicating thermostats.
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