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volvo Workshop Repair Guides


V90 L6-2.9L VIN 96 B6304S (1998)

Relays and Modules > Relays and Modules - HVAC > Control Module HVAC > Component Information > Description and Operation > Fan Control Module

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Control Module HVAC: Description and Operation
Fan Control Module

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The Power Stage amplifies the control signals to operate the blower motor and control compressor operation.

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The blower speed is controlled by a power transistor. A relay is connected into the circuit at the highest speed reduce the load on the transistor,
while a second relay controls the operation of the compressor through the low-pressure pressostat on the air receiver/dryer.

Relays and Modules > Relays and Modules - HVAC > Control Module HVAC > Component Information > Description and Operation > Fan Control Module

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