Quote:
Originally Posted by GP1005
Demist test shows fan changing from low to high speed (late car with just two speeds).
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That's a fail for the Demist Test. The low speed fan should run continuously until the aircon is turned off. If the fan speed changes to high speed, then the system is over-pressurising. That may be due to lack of condenser capacity, typically from a degraded matrix.
This from Jules I believe.
Worth looking into - or through as the case may be.
TC