Had this problem in a Peugeot 206 so may not help here.

Same problem though, blower always at max although it would still control the temperature fine. Turned out to be the rheostat that controlled the fan speed; only problem in the 206 was the rheostat was built in to the blower motor requiring a new one.

Hope it's of some help to you??

 

Thanks for the info. Been reading a lot lately about the resistor pack, but wasn't sure if it would affect the fan in this way. Was expecting to be able to turn the fan "OFF" if the resistor pack was the problem? Does anybody know if the power goes through the switch first then onto the resistor pack?

 

Just a quick update on the problem I had and what was needed to fix it;

The problem;
The interior fan would only switch "Off" or "On" via ignition switch, and when it switched on, it would only run at maximum.
I could not adjust the speed at all.
The other thing I noticed later, there were no back light around the switched when the sidelights were on.

What I tried;
I inspected the fan control relay and its fuse in the fuse box under the bonnet, all seemed in good working order.
I tried a second hand control switch (3 switched together on centre console), no difference, still no back light.

The solution;
Behind the glovebox, there is a reostat (various names used for this). It's mounted into the air duct leaving the fan.
I changed this, and all returned to normal, the fan and backlights on the switch now works correctly.

 

Nice one. At least it was a separate unit unlike my old pug.

 

I HAD THE SAME PROBLEM ON MY TYPE S IT TURNED OUT TO BE THE HEATER RESISTOR BEHIND THE GLOVE BOX ....YOU CANT MISS IT ITS BOLTED ONTO THE AIR VENT CONDUIT .......3 RESISTORS SOLDERED ONTO IT ....THATS YOUR PROBLEM ABOUT £40 FROM MAIN DEALER

 

Just a quick update on the problem I had and what was needed to fix it;

Behind the glovebox, there is a reostat (various names used for this). It's mounted into the air duct leaving the fan.
I changed this, and all returned to normal, the fan and backlights on the switch now works correctly.

I HAD THE SAME PROBLEM ON MY TYPE S IT TURNED OUT TO BE THE HEATER RESISTOR BEHIND THE GLOVE BOX ....YOU CANT MISS IT ITS BOLTED ONTO THE AIR VENT CONDUIT .......3 RESISTORS SOLDERED ONTO IT ....THATS YOUR PROBLEM ABOUT £40 FROM MAIN DEALER

:clap: alm:

 

thanks! good information