ALTROZ SERVICE MANUAL

HVAC 18 13. MODE & TEMPRATURE CONTROL AC- TUATOR The temperature actuator is a high-torque, bi- directional with position feedback actuator is used to control the position of Temperature motor flap via the Temperature control voltage. The outputs are fully compatible with all physical aspects of directly driv- ing a motor such as the occurrence of transients at motor turn-off due to back EMF. The temperature control will be functional throughout the Ignition is ON. The Temperature Control Rotary Knob (Ring) allows the user to mix the Hot and Cold air, to select the various combinations by rotating clockwise. Temper- ature knob controls the servomotor. Total Rotation Span is 270° with 31 positions (30 detents) each of 9°. The Position of the Temperature actuator is based on the Knob position of the Control Panel dur- ing the Ignition ON / OFF. CIRCUIT DIAGRAM PINOUT Pin NO. Rotation from max Hot to max Cool Position Rotation from max Cool to max Hot Position 1 +Ve (Pot.) +Ve (Pot.) 2 Feedback Signal From pot. to Con- trol Panel Feedback Signal From pot. to Control Panel 3 Ground (Pot) Ground (Pot) 4 NC NC 5 Motor +Ve Motor Grd. 6 Motor Grd. Motor +Ve MODE ACTUATOR The mode actuator is a high-torque, bi-directional actuator with position feedback and is used to control the position of air distribution flap, according to the mode set by the user. The outputs are fully compati- ble with all physical aspects of directly driving a motor such as the occurrence of transients at motor turn-off due to back EMF. The Mode control will be functional throughout the Ignition is On. Mode knob controls the servomotor. When the knob is turned from Chest/ Chest-Leg/Leg Mode to Leg- Defrost/ Defrost Mode, the Air Inlet door is moved to