Heater switch (1 Viewer)

[bernardfeay]

My motorhome has a Fiat Ducato 2.3 base. The heater switch (the one that provides warm air through the dashboard vents) works in the first 3 positions but I get nothing in the hottest position 4. I could live with it but if anyone knows if it is a simple fix I'll get it sorted.

 

[dave newell]

That's unusual, its normally the other way round: not working on speeds 1,2 and 3 but does on 4 and that is always the resistor pack. Needs testing as it could be the switch itself or broken wires.

D.