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[Web Creator] [LMSOFT]
VS Commodore Air Con Issues
Phoenix Mechanical
Soaring

Fan resistor - Commodore variable fan speeds are achieved by routing the supply power through resistors, similar to light bulb filaments, but they vary in size. A resistor each for speeds 1, 2 and 3, and the 4th speed is unrestricted. The resistor block houses these filaments, and is mounted in the air conditioning box. This ensures that air flows through the filaments when the fan is being used, to prolong the life of the filament. Unfortunately, like light globes, these filaments break. As each filament breaks, the corresponding fan speed will be lost. Solid state units have replaced the filament style and are more durable. The resistor block can be accessed from under the front windscreen plastic plenum cover.

Fan resistor (standard) - Part Number VS18195

Fan resistor (solid state) - Part Number VS22210

Fan Resistor Climate Control - Calais and Berlina Climate Control system have a solid state fan resistor, but when these fail the blower fan stays on, even when the ignition is off. Replacing the resistor usually rectifies this problem.

Air conditioner compressor bearing - The air conditioning compressor pulley bearing, like any bearing, is prone to failure. When these bearings fail, the compressor will be very noisy when the air conditioning is in use. New bearings are available.

Compressor bearing kit - Part Number VS21341

Air conditioning belt tensioner V8 - The air conditioning tensioner pulley bearing can fail and seize, which increases belt heat and reduces belt grip. This can restrict air conditioning output. These pulleys should be checked if the air con output is inadequate. Belt condition and tension should also be checked.

Tensioner pulley - Part Number 92026658