GF83.70-P-3058Q Activate Preprogrammed Heater, Function

GF83.70-P-3058Q Activate Preprogrammed Heater, Function
- with CODE (228) Stationary heater [models 209.3 as of 1.6.04]

Component Identification:

Programming the preselect time
The preselect time can be entered and selected with the aid of the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group (S111) via the multifunction display in the instrument cluster (A1).

Function requirements
^ C. 15C OFF
^ Preselect time activated in instrument cluster (A1): The yellow LED in the STH switch (N72s12) illuminates and indicates activation.
^ Tank content > 19 %

The preselect times currently stored in the instrument cluster (A1) are suppressed if the heater has been manually switched on in the meantime.

Function
1. The preselect time is reached, the yellow LED extinguishes and the instrument cluster (A1) transmits the "Stationary heater ON" signal to the STH control unit (A6n1) via CAN-B (CAN-B).

2. The STH control unit (A6n1) starts the "Heat or Ventilate" inquiry in the AAC control and operating unit (N22) or the comfort AAC (C-AAC) control and operating unit (N22/7) via CAN-B.

3. The AAC control and operating unit (N22) or the comfort AAC (C-AAC) control and operating unit (N22/7) is activated and compares the current interior temperature to the preset temperature value.

4.1 Interior temperature less than the preset temperature value ("Heat" request):
^ The AAC [KLA] control and operating unit (N22) or the comfort AAC [KLA] control and operating unit (N22/7) transmits the "Heat" signal to the STH control unit (A6n1) via CAN-B (CAN-B).

4.2. Interior temperature less than the preset temperature value ("Stationary ventilation" request):
^ The AAC [KLA] control and operating unit (N22) or the comfort AAC [KLA] control and operating unit (N22/7) transmits the "Ventilate" signal to the STH control unit (A6n1) via CAN-B (CAN-B).

The red LED in the STH switch (N72s12) indicates stationary heating and the blue LED indicates stationary ventilation.