Our purpose is to give you knowledge, and confidence in your ability to work on heavy duty air conditioning and heating systems. Your working speed and trouble shooting skills will improve with …

If it has been validated that the rear temperature valve is not working properly, replace the A/C distributor case. If the temperature valve has been found to be working correctly, refer to SI for …

e from inside compressor. Bearing w. or damaged. • Defective cylinder and/o. shaft. Disassemble . d replace defective parts. Magnetic clutch noisy. . attling noise when magne. c clutch is not . gaged. …

Signs Your AC Needs Maintenance NOTES The AC system is blowing warm air The air conditioner thermostat isn’t working The AC unit is causing unusual sounds or odors Leaking or moisture around …

The compressor, if not equipped with a defrost sensor, will continue to run and may be damaged. Coil freeze-up can also happen as a result of restricted airflow from a severely dirty filter or blocked vents.

Avoid breathing AC refrigerant and lubricant vapor or mist. If accidental system discharge occurs, ventilate work area BEFORE resuming service. Additional health and safety information may be …

Situation: The air conditioning (A/C) system may exhibit insufficient cooling. This may be due to the degradation of control valve operation, preventing the system from delivering full functional potential.