Temperature Control Wheels

Operation
The nominal value for the interior temperature is set with the temperature control wheels. The temperature values printed on the selector wheels of the operating unit do not correspond to the values which are used by the control unit and which can be read out via the status list. These values correspond to a comfort temperature. When setting the temperature, the control wheel on the driver's side has priority near the end positions over the control wheel on the passenger's side. When the temperature control wheel of the driver's side is set to maximum heating, the positive supply to the water valves is interrupted by way of a mechanically coupled switch. In this position, the control unit interrupts the diagnostic procedure for the water valves which are open when no power is applied.