The ambient (outside) temperature affects how much heating or cooling is required to heat or cool the incoming air to the desired temperature. Maintaining a relatively constant temperature setting is not as easy as it sounds because the temperature inside and outside the vehicle is constantly changing. One side can blow cool air and the other side can blow warm air. "Dual Zone" automatic temperature control systems that are offered in many newer vehicles allow the occupant of each front seat to choose their own comfort setting. The system then monitors the temperature inside your car and automatically chooses heating, cooling or a blend, as well as blower speeds to maintain the desired temperature you have chosen. These type of systems control both heating and cooling with a single temperature setting. It is a relatively simple, trouble-free control system that does not require a lot of complicated electronics.Īutomatic temperature control systems, by comparison, can be very complicated (and troublesome).
Changing the temperature setting opens or closes the doors to increase or decrease airflow through the A/C evaporator. The temperature slide switch on most manual systems is connected with cables or vacuum hoses to the airflow control doors inside the HVAC (heating ventilation air conditioning) unit under the instrument panel. If the air isn't cold enough, you crank it all the way up. If the air gets too cold, you turn down the blower speed or change the position of the temperature setting. With a manual A/C system, you turn on the A/C when you want cool air and select a temperature setting and blower speed. Manual A/C systems have an on-off switch, a temperature control knob or slide switch and a knob or switch for adjusting fan speed. Manual air conditioning systems are just what the name implies: they require he A/C temperature settings to be adjusted manually. HOW AUTOMATIC CLIMATE CONTROL DIFFERS FROM MANUAL AIR CONDITIONING Once you set a temperature on your car's automatic climate control system, it should maintain that temperature regardless of what's going on outside.
Today's automatic climate control systems allow hands-free temperature regulator, whether hot or cold. Troubleshoot Automatic Climate Control System by Larry Carley copyright Troubleshoot Automatic Climate Control SystemĪutomotive Repair Library, Auto Parts, Accessories, Tools & Equipment, Manuals & Books, Car BLOG, Links, Index
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