GF83.10-P-2170-01Q Blower Motor, Function

GF83.10-P-2170-01Q Blower Motor, Function

Function
The AAC [KLA] control and operating unit (N22) (on vehicles without code (581b) comfort automatic air conditioning) or the comfort AAC (C-AAC [K-KLA]) control and operating unit (N22/7) (on vehicles with code (581b) comfort automatic air conditioning) forwards a control signal of 0% to 100% to the blower regulator (A32n1) via the A/C bus. This regulates the operating voltage for the blower motor (A32m1) depending on the control signal. This facilitates control of the blower speed from 0 to 100 %.

In order to keep the windows free from misting up and to hold the interior temperature level, the blower output is increased by a maximum of 15 % at outside temperatures of +7 �C to -25 °C and a coolant temperature of > 40 °C.

On model 209.4, while driving with an open soft top, the standard blower level is set to 27% regardless of the footwell position and increased when driving with a closed soft top.

The blower regulator (operating voltage) is influenced by the following factors:
^ Blower output setting (AUTO/manual)
^ Control functions (AC OFF, REST (residual engine heat utilization), Air distribution duct)
^ Mode status (heating, cooling)
^ Intensity of the sun (only with code (581b) comfort automatic air conditioning)
^ Coolant temperature
^ Vehicle speed
^ Outside temperature
^ Humidity
^ Fresh/recirculated air flap position
^ Activated charcoal filter flap position (only with code (581b) comfort automatic air conditioning)
^ Flap positions
^ Soft top status
^ Terminal 15 (blower ON), starter running (blower OFF)

Manual blower stages (automatic air conditioning):
STAGE 1 16 % blower output
STAGE 2 30 % blower output
STAGE 3 46 % blower output
STAGE 4 64 % blower output
STAGE 5 80 % blower output
STAGE 6 100 % blower output

Manual blower stages (comfort automatic air conditioning):
STAGE 1 10 % blower output
STAGE 2 20 % blower output
STAGE 3 26 % blower output
STAGE 4 36 % blower output
STAGE 5 50 % blower output
STAGE 6 64 % blower output
STAGE 7 100 % blower output

Automatic stages
The blower output is controlled via a blower characteristic.