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tobyrm1

Member Since: 13 Oct 2020
Location: Bristol
Posts: 6

2015 Defender 90 Puma 2.2 SW Santorini Black

Welcome & Defender 2.2 Puma heater problem

Hi,

First of all I would like to introduce myself. I am new to the forum but not new to Defender ownership. I have a 2005 110 hardtop and a 2015 90 Station Wagon XS.

The 90 is relatively new to me but I am slowly working through a list of repairs! Gluing the weights on the bottom of the gearstick as per the thread on the forum is the biggest improvement so far!

I have another problem with the heater blower though. When the ignition is on the 0 1 2 3 heater fan speeds work perfectly. When the engine is running 0 & 1 are the same speed, 2 increases the speed and 3 increases it further as you would expect. I am therefore unable to turn off the blower with the engine running.

Wonder if anyone has had this problem before? If so does anyone have any opinion whether it is likely to be the blower resistor or the slider on the dashboard?

Thanks

Toby

13th Oct 2020 6:31am

Rashers

Member Since: 21 Jun 2015
Location: Norfolk
Posts: 3502

2014 Defender 110 Puma 2.2 USW Corris Grey

Welcome to the forum

If you have air con, and the air con button is depressed, the fan will work on O. Turn the air con off and the fan should stop

Hope that helps.

13th Oct 2020 6:42am

tobyrm1

Member Since: 13 Oct 2020
Location: Bristol
Posts: 6

I do have the aircon button pressed. I will go out later and check. It didnt even occur to me that it would prevent the fan from being turned off!

Thanks for your help!

13th Oct 2020 7:08am

Rashers

Member Since: 21 Jun 2015
Location: Norfolk
Posts: 3502

Not a problem

13th Oct 2020 7:40am

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4210

2007 Defender 110 Puma 2.4 XS CSW Java Black

The reason it does that is to prevent ice forming on the AC evaporator when the air con is on. With no airflow it’s possible that the ventilation to the cabin could be completely blocked off by ice. 2007 110 TDCi Station Wagon XS

13th Oct 2020 7:59am

tobyrm1

Member Since: 13 Oct 2020
Location: Bristol
Posts: 6

Makes total sense!

13th Oct 2020 8:54am

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