Hi all

My 07 doblo cargo heaters dont work properly?

The heat is on but only at a low speed ?

Even if its turned up high, it's still only low, but hot.

It's a new van to me although it is a second hand one.

Hi and welcome

Almost certainly the power to and from the 'resistor pack' : control unit for the fan motor

This tells you 99% of it:


https://www.fiatforum.com/grande-punto/314051-heater-faq.html

Charlie