Hi I'm back.
If you need to remove the control unit
1 remove ashtray
2 Remove 3 screws securing the check panel & pull out.
3 disconnect the connectors & remove check panel
4 now remove 2 screws securing control unit
5 disconnect the 3 connectors & remove control unit.
If its the fan speed variator with temp sensor your after then
1 Underneath the passenger side of the dash is the fan. to remove it use a thin bladed screwdriver to lift a tab which then allows the fan to be rotated anticlockwise and dropped down.
2 The variator is located in the lower part of the distribution ducting. It has 2 connectors each with 3 wires. Removal is simply a matter of removing the connectors and then 2 screws.
It sounds as though the variator/sensor is at fault. I dont think you have to remove the fan itself to get at it. It could well be a poor connection. I had problems with my outside temp sensor and that was just the connector needing cleaning up.
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