Reading Out Diagnostic Trouble Codes (DTCS).

Accessing readouts 

Integrated diagnostics are accessed via the keypad on the control panel for the climate units.

Enter the following combination on the keypad: #342400# .

The fault at the top of the list is what has been detected most recently. The Accessory Connectivity Unit (ACU) saves and displays up to 100 faults. The oldest fault disappears from the list when the fault number 101 is detected.

Readout format 

The readout format is: day, month, time of day, year and description of status.

Faults can be displayed according to:

"20 12 12:17 2012 GPS signal short to ground".

If no fault is saved, the status description is "START Diagnosis" . Such a readout is displayed according to:

"05 12 13:35 2012 START Diagnosis".