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> Heater/fan Distribution Not Working, The 'function selector' doesnt work
reg.orton
post Jun 2 2009, 09:43 AM
Post #1


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Joined: 2-June 09
Member No.: 57,654
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Location: UK
Drives: 1.8 2000 V40



Hi Guys,

I have a 1999 V40, and the air distribution control knob doesn't work any more. I have checked all the fuses under the dash, and they all work.

What is wrong? Is it the flaps? or has something electrical come loose? Where should I start looking?

Thanks for your help!

Reg
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Mozzeh
post Jul 11 2009, 04:52 AM
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Location: Blackpool
Drives: Volvo S40 SE



Its the heater relay my friend, i have had the same problem, its located under the passenger side footwell. I found one on "Parts Direct" and it took me about 5mins to fit it.

Look here: http://s40concepts.net/forum/index.php?t=m...d3ccbfed43d7489

Cheers
Mozzeh
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carch
post Oct 27 2009, 11:54 AM
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Location: San Jose, CA USA
Drives: 2001 Volvo V40 1.9T



I have a very similar problem and wonder if it can be the same.

Tell me if you symptoms are the same:
1. Fan does not work for either AC or Heat
2. Both AC and Heat work (a little) when the vent is open and you are traveling with moderate-plus velocity

This is what mine is currently doing. I know AC works and I know the heating element works.
Intermittently (very intermittently) the fan will go on, full power and stay on, but that does not last and is never convenient.
I blame the switch in the dash and I am currently working to test that theory.

Need a little help taking my dash apart to get to the switch. Any help on removing the switches from a 2001 V40 would be great.

Hope to get the heater working before I need it!
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carch
post Oct 27 2009, 03:08 PM
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Member No.: 63,882
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Location: San Jose, CA USA
Drives: 2001 Volvo V40 1.9T



My fan was blower was running full speed regardless of the dial setting and then it stopped working altogether.

After seeing the beautiful description provided by Mozzeh, I decided to give it a try. What's $2.99 for a possible fix.

What do you know, that fixed my problem!!

Hats off to you Mozzeh, now I have heat and A/C back...

Put you hand to the screen for a virtual high five. Volvo here in California wanted $150 just to diagnose it.
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cbbella
post Apr 3 2012, 07:05 PM
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Joined: 20-November 07
Member No.: 34,918
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Location: uk
Drives: 1998 S40 T4



QUOTE (reg.orton @ Jun 2 2009, 03:43 PM)
Hi Guys,

I have a 1999 V40, and the air distribution control knob doesn't work any more. I have checked all the fuses under the dash, and they all work.

What is wrong? Is it the flaps? or has something electrical come loose? Where should I start looking?

Thanks for your help!

Reg




hi i have 1999 s40 1.9td D4192T Renault engine with a/c and ecc like this one.

(IMG:http://i1142.photobucket.com/albums/n605/cbbella/Volvo%20S40/VolvoS40heatercontrols.jpg)

my air distribution control knob doesn't work. either does the heat control knob but my blower control knob works in all positions so it's not the resistor. the recirculation and a/c buttons work now and again and they also flash for 20secs upon starting the engine. the temp sensor next to the recirculation button is nice and clean

any idea's on where to start problem solving

thanks in advance
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