Automatic air conditioning box, function - GF83.40-P-2105-02T

Heater operation front and rear 

Function 

In heating mode fresh air (A) is drawn in by the blower motor (A32m1) due to the position of the fresh air flaps and recirculated air flaps actuator motor (M2/5). The air cleaned through the dust filter (1) is routed to the cooled evaporator (2), dried there and cooled off. Then the dried and cooled air (B) is heated up again due to the position of the left blend air flap actuator motor (M2/6) and the right blend air flap actuator motor (M2/7) in the heated heat exchanger (3) and heater booster (R22/3). The heated air (C) is routed through the positions of the actuator motors (M2/6, M2/7, M2/15 and M2/16) to the air outlets (6, 7, 8, 10).

In addition cooled air (B) is diverted directly downstream of the evaporator (2) which mixes with the heated air (C) via the position of the center nozzle flap actuator motor (M2/22) and the left blend air flap actuator motor (M2/6) and the right blend air flap actuator motor (M2/7). As a result blend air (D) escapes at the front center nozzle air outlet (9) and rear center nozzle air outlet (5).

The condensation is passed to atmosphere through the condensation drain.

Cooling operation front and rear 

Function 

In cooling mode fresh air (A) is drawn in by the blower motor (A32m1) due to the position of the fresh air flaps and recirculated air flaps actuator motor (M2/5) The air cleaned through the dust filter (1) is routed to the cooled evaporator (2), dried there and cooled off. Due to the position of the left blend air flap actuator motor (M2/6) and the right blend air flap actuator motor (M2/7), the dried and cooled air (B) then is led past the heated heat exchanger (3) and the heater booster (R22/3).

Due to the position of the blend air flap actuator motor on the left (M2/6) and the blend air flap actuator motor on the right (M2/7), the left and right footwell flap actuator motors (M2/15) and the center outlet flap actuator motor (M2/22), the cooled air (B) is led to the rear center nozzle air outlet (5), front side nozzle air outlet (8) and front center nozzle (9). In cooling mode the footwell flaps and thus the rear footwell air outlet (6) and front footwell air outlet (7) are closed via the blend air flap actuator motor on the left (M2/6) and the blend air flap actuator motor on the right (M2/7).

The left and right defroster nozzle flap actuator motor (M2/16) enables the defroster nozzle flaps to be opened if the outside air is dry.

The condensation water is led to the outside condensation water drain.

Mixed air operation front and rear; recirculated air mode 

Function 

In "front and rear blend air mode; recirculated air mode" recirculated air (A) is drawn in (A32) due to the position of the fresh air flaps and recirculated air flaps actuator motor (M2/5). The recirculated air (A) reaches through the cooled evaporator (2) is dried and cooled there. Then part of the dried and cooled air (B) is heated up again in the heated heat exchanger (3) and heater booster (R22/3) due to the position of the left blend air flap actuator motor (M2/6) and right blend air flap actuator motor (M2/7). The other part of the dried and cooled air (B) is led past the heat exchanger (3) and heater booster (R22/3) and mixed downstream of the heat exchanger (3) and heater booster (R22/3) with the heated air (C) to form blend air (D).

The blend air (D) is led to the air outlets (5, 6, 7, 8, 9) via the position of the actuator motors for the blend air flap on the left (M2/6) and right (M2/7), actuator motors for left and right footwell flaps (M2/15) and center outlet flap actuator motor (M2/22). The defrosting flaps can be opened by the left and right defrosting actuator (M2/16) if the outside air is dry.

The condensation water is led to the outside condensation water drain.