VALVE GP-FLUID CONTROL 7N0912 - Caterpillar

Illustration 2 g03399469Cab Air and Cab Ventilation Duct Air Temperature Sensors
Cab Air and Cab Ventilation Duct Air Temperature Sensors are PWM inputs to the Implement ECM. These two sensors are used to determine average cab air temperature.Operator Controls
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(A) A/C mode
(B) Off mode
(C) Automatic temperature control mode
(D) Temperature dial
(E) Blower speed dial HVAC Blower Speed Control Position
The fan control position, controls the speed of the HVAC blower motor. Full counter clockwise position is the off position and the full clockwise position is the maximum fan speed. The dial is a potentiometer that provides an infinite variable blower speed option allowing the operator to choose the correct airflow quantity.Note: Do not turn the blower speed dial to the full counter clockwise position unless you want to shut off the HVAC system.High/Low Pressure Switch
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High-pressure switch
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Low-pressure switch
High/Low pressure switch, used to prevent unwanted high pressure and low-pressure conditions on the outlet of the A/C compressor. Low-pressure switch, used to prevent unwanted low-pressure conditions on the inlet side of the A/C compressor. Both the high/low and low-pressure sensors prevent operation of the A/C compressor during conditions of overcharge of the refrigerant and undercharge of the refrigerant.HVAC Evaporator Thermostat Switch
Illustration 6 g03399572The HVAC evaporator thermostat switch is a passive analog signal to the Implement ECM. This sensor is used to measure the