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Old 11th June 2021, 10:31   #1
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help .... the air conditioning display tells me er .... what's up ?? '' '
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Old 11th June 2021, 12:07   #2
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Run the air con self test - see below courtesy of SD1TOO -see what error code you get.




You can perform a manual diagnostic check of the system by pressing and holding the AUTO switch and the air distribution switch, then turning the ignition switch from 0 to II. The audible warning and all the indications on the control panel display cycle on and off whilst the ATC ECU runs the diagnostic check.

When complete, all the indications in the display are replaced by FC in the left-hand temperature window and two digit fault codes in the the right-hand window which cycle in numerical order. An audible warning sounds as each fault code is shown.

The check is cancelled by pressing the OFF switch or turning the ignition switch to 0. If there are no faults, the system reverts to normal operation. In low light conditions the sunlight sensor (top centre of dash) should be illuminated with a strong light source.
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Old 11th June 2021, 12:09   #3
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With ignition off press and hold the AUTO and AIR DISTRIBUTION buttons then turn ignition to position 2 and ATC will do a self test.
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Old 11th June 2021, 12:10   #4
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Also have a look here -would appear to be a KBUS fault - but it is recommended to disconnect the battery for more than 30 minutes as it may reset the air con unit.


https://the75andztclub.co.uk/forum/s...d.php?t=251924
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Old 12th June 2021, 10:14   #5
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I managed to do the test, only the code 00 flashes me so everything is okay ??
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Old 12th June 2021, 10:29   #6
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No ATC faults showing, if still showing ERR then do as Martin suggests above and disconnect the battery, remove both battery leads and once clear of the battery touch the leads together for 30 seconds {scandinavian reset} IIRC.
Leave battery disconnected for 30 mins, and let us know how you get on.
Good luck.
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Old 12th June 2021, 16:18   #7
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You are great thanks to all I solved thanks !!!:abbraccio di gruppo:
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