Section 3 (HVAC System): Description
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Temperature control and mode selector lever control various A/C-heating modes. Blower switch selects any of 4 blower speeds. In A/C mode, a pressure switch on low pressure side cycles the compressor clutch to maintain a constant discharge air temperature. The heater system blends heated outside air with cooler outside air to obtain desired temperature. Various sensors control compressor and cooling fan operation.