IHKA Control Panel: Led In A/C Button Flashes (64 01 00)

Publication date: 2000-05-01
Reference number: 64 01 00

IHKA CONTROL PANEL: LED IN A/C BUTTON FLASHES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 64 01 00, Date of Issue: May, 2000

BMW:	E46
GROUP:	64 - Heating and Air Conditioning

SUBJECT

E46 IHKA Control Panel: LED in A/C Button Flashes

SITUATION

After installation of a new IHKA control module, the LED in the A/C button (snow flake button) flashes.

CAUSE

Flashing A/C LED indicates that the IHKA module is in the A/C compressor protection mode (function designed to ensure adequate refrigerant distribution during the initial operation of the Air Conditioning system).

CORRECTION

After replacement of the IHKA module, the A/C system should be operated for more than 90 seconds at an engine speed below 1500 rpm to disable the compressor protection feature (until the A/C LED stops flashing).

WARRANTY INFORMATION

For information only.