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Display group "028” > < Display groups "023” to "025”

A4 Cabriolet Mk2

Display groups “026” and “027”
Display groups “026” and “027”
Ambient conditions under which pressure in refrigerant circuit was last not OK
  Note
If no fault has been detected since the fault memory was last erased, the display zones of the display groups “026” and “027 ” indicate, depending on the version of the operating and display unit, Climatronic control unit -J255-, “erased” for example.
   
Display group “026”
Display zoneSignificanceExplanatory notes
1Deactivation fault location
t  Display = .... (blank) or “erased”
–  No fault in signal from high-pressure sender -G65- detected since fault memory last erased
 
t  Display = “0819”
–  The high-pressure sender -G65- has supplied a pressure signal which could not be evaluated
–  The pressure in the refrigerant circuit was too high or too low

  Note
t  The display “0819” is the fault code for the fault location high-pressure sender -G65-.
t  Display zone “1” may, depending on the hardware/software version of the operating and display unit, Climatronic control unit -J255-, display a different fault code instead of “0819”. This fault code can then be ignored.
   
Display group “026”
Display zoneSignificanceExplanatory notes
2Pressure in bar (absolute pressure) in refrigerant circuit when fault occurred, calculated by way of pressure signal from high-pressure sender -G65-
l  Evaluation of pressure → Anchor (display group “001”)
3Actuation in % of radiator fan(s) -V7- when fault occurred (specified output requested by operating and display unit, Climatronic control unit -J255-)
l  Evaluation of actuation → Anchor (display group “014”)
4Actuation in % transmitted from relevant engine control unit to radiator fan control unit -J293- for radiator fan(s) -V7- when fault occurred (feedback of specified output requested)
–  There is no display on vehicles with operating and display unit, Climatronic control unit -J255- up to hardware/software version “0202”
l  Evaluation of feedback → Anchor (display group “014”)

  Note
Depending on the version of the operating and display unit, Climatronic control unit -J255-, the radiator fan is either switched on immediately in air conditioning mode when the compressor is activated or the radiator fan is only actuated on exceeding a pressure of approx. 9 bar in the refrigerant circuit.
   
Display group “027”
Display zoneSignificanceExplanatory notes
1Calculated ambient temperature in ° C when fault occurred, transmitted by control unit in dash panel insert -J285-
l  Evaluation of display → Anchor (display group “010”)
2Vehicle speed in km/h when fault occurred, transmitted by control unit in dash panel insert -J285-
l  Evaluation of display → Anchor (display group “012”)
3Coolant temperature in ° C when fault occurred, transmitted by control unit in dash panel insert -J285-
l  Evaluation of display → Anchor (display group “011”)
4Display zone not used 

   

Display group "028” > < Display groups "023” to "025”