Cold weather - fan speed issue

[Crasher242]

Hello

I have a 15-plate (run-out model) Cooper S Roadster (petrol).
I've had it from new and its been faultless in the time i have abused it.

In the last couple of weeks, coinciding with the recent "cold snap" i have noticed that the heating/cooling blower fan is not spooling up.
I can put it on manual and ramp the fan speed up to max (essentially to clear the front screen) and all i can hear is a low level blow - nothing like what i know it can ramp up to.

I can come back to the car later on in the day and it seems to work fine - just seems to be when cold.

Anyone else experienced this?
Its due a service in a month or so, so i could wait until then, but given the intermittent nature i just know that its likely to behave itself on the day.

No error codes reported on the dash either.

Cheers all

[NotBenny]

I'm assuming the temperature is set to blow hot air?

If so, it's a feature on a lot of modern cars that they won't blow air until the engine is warm enough that the air is going to be warm. So in this case, you've asked for warm/hot air to be blown, but the car can only deliver ambient air (which will be reasonably cold), so it doesn't do anything.

[Crasher242]

Hi
Yes - set to blow hot air.

Interestingly even when up to temp, the fans still seem to refuse to ramp up.
In front-screen de-mist mode (as i don't have a heated front screen) the fans should just ramp up regardless of air temp - always used to do this.