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Volvo 1990 780 Model
NOTE: Do not place any objects over the sensor in the passenger side speaker grille as this will cause
the ECC system to respond incorrectly to ambient conditions.
ECC system fault indication
If the light in the air conditioning push button begins to flash when the ignition is switched on, a simple
fault is indicated. The system will compensate by substituting a standard value stored in the memory.
System performance loss will be slight.
If the light continues to flash more than 20 seconds, a more serious fault is indicated. While the system
will again attempt to substitute a standard value, some reduction in system performance will become
apparent. Contact your authorized Volvo dealer for service.
pg. 24
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