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DISCO3.CO.UK > Maintenance & Mods (D3)

Heater/ hvac/air con not working help needed

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993porky

Member Since: 28 Jan 2013
Location: Sunderland
Posts: 82

2006 Discovery 3 TDV6 SE Auto Zermatt Silver

Heater/ hvac/air con not working help needed

Hi
As title says the heaters not working no lights nothing at all.
Where do i start?
Tried searching on here and web but cant seem to find any answers,is it just a case off putting new panel unit in under radio or is itsomething more.
Help and advice desperatly needed

9th Sep 2017 6:29 pm

DSL
Keeper of the wheelie bin

Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72922

Got a unit available but no idea if that would cure it.

http://www.disco4.com/forum/topic163389.html

Click image to enlarge

11 HVAC control unit

£60

Click image to enlarge

9th Sep 2017 6:36 pm

bimblephish

Member Since: 21 Jul 2016
Location: Wiltshire
Posts: 272

2006 Discovery 3 4.4 V8 HSE Auto Java Black

First place to look has to be the fuse box. I don't have wiring or fuse layout diagrams to hand but I'm sure there will be something in the forum somewhere

10th Sep 2017 1:50 am

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10533

2005 Discovery 3 TDV6 HSE Auto Rimini Red

check/replace fuse 51 behind glovebox (red10A)

10th Sep 2017 11:13 am

993porky

Member Since: 28 Jan 2013
Location: Sunderland
Posts: 82

Changed hevac with one i know works and still not working no lights also

Tried relay still no joy, i will try the fuse behind glovebox.
Does anyone know if blower or resistor can cause this problem?
Why no lights on hevac.
Thanks for the suggestion up to now

11th Sep 2017 9:37 pm

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10533

When it's the blower, relay or resistor it lights up

11th Sep 2017 10:07 pm

993porky

Member Since: 28 Jan 2013
Location: Sunderland
Posts: 82

Pete k
Any ideas why it isn't lighting up ?
Today hevac was working in one car I took it out and put it into my car and nothing no lights

11th Sep 2017 10:37 pm

Erea

Member Since: 19 Mar 2012
Location: Munster
Posts: 1509

2006 Discovery 3 TDV6 Commercial Manual Zambezi Silver

Are you switching the same type of HEVAC or are you upgrading the HEVAC? If upgrading you might have to tell the car you are changing from air conditioning to climate control in the CCF settings, I'm not sure if that would stop it working.

12th Sep 2017 6:08 pm

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10533

Pete K wrote:
check/replace fuse 51 behind glovebox (red10A)

done this yet?

I don't understand what swapping you have done

12th Sep 2017 6:22 pm

993porky

Member Since: 28 Jan 2013
Location: Sunderland
Posts: 82

Pete k I haven't been able to check fuse yet, I've swapped hevac from my old disco to new one as it has heated seat buttons for future upgrade to heated seats. Hevac I have installed works as I checked it just before I removed from old car

12th Sep 2017 8:48 pm

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