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When system pressure exceeds 220psi, high pressure switch closes and high-speed fan relay is activated by earthing between pressure switch and air conditioner relay. Battery supplies power to cooling fan motor through high-speed fan relay.
Section Four: Internal Circulation Electromagnetic Valve Circuit
I. Working Condition of Internal Circulation Electromagnetic Valve Internal circulation switch is pressed down (please refer to circuit diagram in Section Five of this Chapter).
II. Working Principles of Internal Circulation Electromagnetic Valve When ignition switch is turned on, air conditioning blower relay coil is powered by wire X and the contact of air conditioning blower fan is closed. Press down internal circulation switch, battery supplies power to N63 internal circulation electromagnetic valve through blower relay and internal circulation switch. Section Five: Blower Circuit
I. Working Condition of Blower Blower switch has four ranges, and blower speed has four levels accordingly. |