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Laguna II - Laguna II Heater Fan Fault - colmetcalfe

I have a Laguna II estate (01 reg). It has the digital control unit for the fan. The fan fails to run at any speed. I've had the motor out & run on bench ok. The resistor bank & digital control units have both been changed, with no joy. Is there a relay or fuse that I should be looking for. Also anyone have a wiring diagram for the climate control setup? Hope someone can help. Thanks